6 daevid at daevid dot com. If you want to further process the buffer's contents you have to call ob_get_contents () before ob_end_clean () as the buffer contents are discarded when ob_end_clean () is called. My only problem is that with some large pages PHP runs out of memory. ob_end_clean modifies variables as well. For what you are trying to do, there is no need to use ob_start and ob_flush. ob_start is a PHP function which turns output buffering on. in same file where you set header. Next we send the header without any problem as we've not yet spit out any output. While output buffering is active no output is sent from the script (other than headers), instead the output is stored in an internal buffer. fields. PHP codes within ob_start are not executed in this way, you should work with an evil function: eval() Share. –Going to your php. Actually, we can use type regulation - intval (ob_get_contents ()), for cheking On/Off output buffering, but it lays the possible problems in the future. If multiple output callback functions are active, output is being filtered sequentially through each of them in nesting order. FYI, you might want to stop using the MySQL extension since it's deprecated. php:2) in /some/file. The ob_get_contents () function has different return behaivor in PHP 5. The ob_end_clean () function is a useful tool for clearing the output buffer and turning off output buffering in your PHP web application. It doesn't affect db connection. Some PHP programmers put ob_start () on the first line of all of their code*, and I'm pretty certain that's what going on here. User-perceived load time. 0. limit. As a result, the first ob_start () will have an ob_get_level () of 2, the second will be 3, and so on. This doesn't work. The output buffer must be started by ob_start () with PHP_OUTPUT_HANDLER_CLEANABLE flag. . I will verify if there is any . Remember to have a folder named cache and allow PHP to access it. However, certain Microsoft programs (I'm looking at you, Access 97), will fail to recognize the CSV properly unless each line ends with \r . If output_callback returns FALSE original input is sent to the browser. php’); ob_end_flush(); //this has to be the last line of your page?> 2. Output Buffering is thinking in the right direction, you start output buffering with ob_start() just like you would with sessions (session_start) somewhere in the top of your script, before any output is sent. ob_clean (): bool. PHP Collective Join the discussion. If you call them from callback function, the. You can call ob_start () more than once in your script. While output buffering is active no output is sent from the script (other than headers), instead the output is stored in an internal buffer. So, it works, because you either send the output directly (php's default mode of operation), or you buffer the ouput and send that output "indirectly" via the response object (or by just outputting the return value of ob_get_clean). Courses. Learn more about CollectivesIn your export. ob_end_flush (): bool. This stores all generated content into an output buffer, and displays it in one go. If multiple output callback functions are active, output is being filtered sequentially through each of them in nesting order. The `sleep ()` function is used to simulate some processing time between each iteration. Conclusion. ob_end_flush () を適切な回数呼び出すようにしてください。. This function should be used in place of exec() or system() when the output from the Unix command is binary data which needs to be passed directly back to the browser. $ php parent. Example Get your own PHP Server. Why ob_start() solves the header() error? 2. Confused why code will only work with ob_start(); 0. it will work as you would use ob_start with no. Warning: Cannot modify header information - headers already sent by (output started at /some/file. If not set or null, the raw image stream will be output directly. That said, a combination of ob_end_flush() (or ob_flush()) and flush() should still cause PHP to request that the downstream buffers are cleared, so this may still work. 14. 1. If they're writable, this will lock them everywhere else, so any page loads will hang while the server waits for them to become writable again. ob_start is a PHP function which turns output buffering on. つまり、別の ob_start () がアクティブなときに ob_start () を呼び出すことができます。. net:The ob_start function may change the working directory of the PHP process when it invokes the user-defined callback. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more. PHP: Using ob_start or another method to separate variables and propogate data. That is, assume that you have 10KB of. The two functions you can use for this are ob_start() and ob_get_contents(). If you call them. While output buffering is active no output is sent from the script (other than headers), instead the output is stored in an internal buffer. The ob_get_flush () function outputs the contents of the topmost output buffer, returns the contents and the deletes the buffer. Using the browser. Use ob_get_status(). I can send a CURL request and get the response below: Code: Select allSo far I use Ajax to execute PHP after a button click and ob_flush() to flush out the echo() one after each other. PHP ob_start skeleton only working first time. – webnoob Oct 29, 2012 at 10:29The CLI for PHP does not use output buffering (or more specifically the buffing is not related to the ob_ functions). When callback is. PHP CLI no longer had the CGI environment variables to. This can be done with the ob_start () function, which causes the output to be stored in an internal buffer. at the second one; op_start is to buffer the output. 4 ob_start(); in php? 1 PHP die function. Collectives™ on Stack Overflow. down. Any time spent on activity that happens outside the execution of the script such as system calls using system(), the sleep() function, database queries, etc. Output Control Functions. Perhaps you can move that part out of the conditional or try rewriting it to where you write the data to the object and then call renderOutput() and this method would have your ob calls in the proper order. The output may be caught by another output buffer, or, if there are no other output buffers, sent directly to the browser. I'll explain: Here is a 'hello world' script for dompdf: require_once("In case you have done already HTML output prior the use of setcookie you need to find the place where your HTML output started. ob_start () นี่เป็นคำสั่งที่บอกไปยัง webserver ว่า ยูอย่าเพิ่งส่ง output ไปให้ client นะ รวบรวมไว้ก่อน รอให้สั่งหรือประมวล. ob_get_clean (): string|false. Description ¶. When the output buffer is to be sent, PHP starts sending the. You have to differentiate two things: Do you want to capture the output (echo, print,. The ob_start () function don’t accepts any parameter specifically but it works by accepting some optional parameters. For user defined functions, use ob_start(). As you can notice, exit() is used in the example above. The ob_get_contents () function has different return behaivor in PHP 5. While output buffering is active no output is sent from the script (other than headers), instead the output is stored in an internal buffer. Is it possible to pause the output buffering in php so that I could skip the buffering on the table headers and resume again at the beginning of the actual content?I have a project where I am using OB_START to gather output from a PHP file. ฟังก์ชัน ob_start () เปิดบัฟเฟอร์การส่งออก (output) เป็น function ของ PHP ที่ไว้ประการใช้ output buffering จะใช้คู่กับ function ob_end_flush () บัฟเฟอร์เอาต์พุตสามารถ. Basically, the correct cause of action is to move all of the processing code above any output to the browser. ini involving setting output_buffer and/or zlib. A better way to do this is to use the first two parameters accepted by ob_start: output_callback and chunk_size. php from server and the code worked well with all other php files. Turn on output buffering at the top of your script with ob_start (). ob_start( 'ob_gzhandler', 16000, // to send data continuously PHP_OUTPUT_HANDLER_FLUSHABLE // but not removable and cleanable ); Output compression can be also activate by directive zlib. php Sleeper started at 01:22:02 Parent waiting at 01:22:02 Sleeper done at 01:22:05 Parent done at 01:22:05 However, forking does not inherently allow any inter-process communication, so you'd have to find some other way to inform the parent that the child has reached the specific line, like you asked in the question. So, until browsers begin to show buffered content. The ob_start () function creates an output buffer. A session is started with the session_start () function. Strange behavior ob_start. Right now, it can parse the phpinfo() output when invoked from the command line, which was my use case. file. But it doesn't speed up your application/website. While output buffering is active no output is sent from the script (other than headers), instead the output is stored in an internal buffer. Using output buffering. 公式マニュアルの説明では「出力のバッファリングを有効にする」とあるのですが、この「バッファリング」が実際どういった動作をするものなのか分かりにくいので簡単な図を書いてみました。 ob_flush (): bool. Improve this question. また、バッファ ob_start メソッドを初期化してから、自動的にバッファリングされる HTML ブロックを出力します。 次に、ob_get_contents メソッドを使用してバッファからデータを取得し、それを出力します。 最後に、バッファ ob_start メソッドを初期化し、自動的にバッファリングされる単純な文字. The Overflow Blog An intuitive introduction to text embeddings. There is a note on the official documentation for the header function indicating as such. Probably you are using a buffering function in output buffering callback which isn't possible as mentioned in php ob_start output_callback documentation. The ob_get_contents () function in PHP returns the contents of the output buffer as a string. This is equivalent to calling the PHP function flush() after each and every call to print or echo and each and every HTML block. When you make an request, the script is being executed in apache user environment. One of PHP_OUTPUT_HANDLER_START (0), PHP_OUTPUT_HANDLER_CONT (1) or PHP_OUTPUT_HANDLER_END (2) name: Name of active output handler or ' default output handler' if none is set: del: Erase-flag as set by ob_start() If called with full_status = true an array with one element for each active output buffer level is returned. 2. Get Started For Free! Want us to email you occasionally with Laracasts news?Sometimes, ob_get_level () may be off by 1 because at the start of the script, it will return 1 even if ob_start () has never been called (and clearing the output buffer via ob_end_clean () and the like can be done without error). For this reason, any code inside the target file which should be executed as PHP code must be enclosed within valid PHP start and end tags . This function will send the contents of the output buffer (if any). 1. This function will turn output buffering. php buffer doesn't stop after ob_end_clean. here is my code:ob_start(); ob_end_flush(); flush(); It took some time to come up with the above solution however I can confirm with CURL that it is working as expected. Note: The set_time_limit() function and the configuration directive max_execution_time only affect the execution time of the script itself. If "URL include wrappers" are enabled in PHP, you can specify. ob_start echo's strings out still. php with:The read callback must always return a session encoded (serialized) string, or an empty string if there is no data to read. I just got done creating the composer library for this very purpose. While output buffering is active no output is sent from the script (other than headers), instead the output is stored in an internal buffer. ob_get_clean — Get current. This function adds another name/value pair to the URL rewrite mechanism. I would try ob_end_flush(), ob_flush(), and flush(). When the script finishes running, or you call ob_flush (), that stored output is sent to the browser (and gzipped first if you use ob_gzhandler, which means it downloads faster). Note: you need to call ob_start() before you start sending any output (using echo or print_r). x. The Overflow BlogIf your template1. Basically you just wrap your html in ob_start(); this will return the html as a string so you can echo it. Finally we call ob_end_flush to flush. phpThe ob_get_contents () function has different return behaivor in PHP 5. If a page uses ob_start ('ob_gzhandler. Next thing is to begin with ob_start(); Then you need ob_flush(); flush(); before any echo or print. This includes information about PHP compilation options and extensions, the PHP version, server information and environment (if compiled as a module), the PHP environment, OS version information, paths, master and local values of configuration options, HTTP headers, and the PHP License. It makes use of the PHP output buffering control to capture things that are not inside PHP code blocks. It creates a new buffer each time however, so be careful. You can use ob_start() and ob_end_flush() it behaves similar to how a print or echo would when interacting with the event stream. Before ob_gzhandler() actually sends compressed data, it determines what type of content encoding the browser will accept ("gzip", "deflate" or none at all) and will return its output. Above that line place the ob_start Docs function which will start output buffering. I don't know why this would fix it when my current output_buffering value of 4096 doesn't, and I understand that this workaround comes with its own issues. จะเห็นว่าโค้ดด้านบนนี่ PHP แยกอยู่ของ PHP HTML แยกอยู่ของ HTML ทำให้ดูโค้ดได้ง่ายเวลามันอยู่ใน editor. When output buffer is ended it is sent to the client (browser). Use the second method if you want to compress. The ob_get_length () function returns the length of the topmost output buffer's contents in bytes. PHP Collective Join the discussion. It deals with text (mostly) produced by php. If it takes 10 seconds for that page to load, rather than seeing a new line every 2 seconds, then it means that it is being cached by your webserver. Usando ob_start le permite mantener el contenido en un buffer del lado del servidor hasta que esté listo para mostrarlo. 0 How to replace die() statement? 2 ob_start not working in PHP 5. By understanding the syntax and usage of the function, you can easily compress your output and improve the speed of your website. Definition and Usage. The ob_flush () function outputs the contents of the topmost output buffer and then clears the buffer of the contents. ob_start(); // เป็นการประกาศเพื่อให้โปรแกรม สำรองเนื้อที่ในหน่วยความจำมาเพื่อรองรับการใช้งานของ object ต่าง ๆ ที่จะเกิดขึ้นกับโปรแกรมเมื่อมีการทำงาน. This function does not accept any parameters. Session variables are set with the PHP global variable: $_SESSION. PHP’s ob_start() and ob_get_clean() are useful for buffering output of printed content and so forth, but I use them very rarely and tend to forget their order/syntax. ob_start () opens a buffer in which all output is stored. For WHM setting => Easy Apache => Exhaustive Options List < here enable - deflate tab >. I need to var_dump a variable to a string. where in index. Follow. ob_start(); callback function. It will work. I get. The PHP ob_start() function turns on the output buffering. If you use XAMPP for instance, you can go to this link and check if output buffering is on or off. Menggunakan fungsi ob_start() dan ob_end_flush() Fungsi ob_start() akan menyimpan semua output dalam internal buffer PHP. In. These comments are similar to C/C++ and Perl style (Unix shell style) comments. 1. Which however is less reliable for multiple reasons: Even if <?php ob_start(); ?> starts the first script, whitespace or a BOM might get shuffled before, rendering it ineffective. First, since PHP is generally *nix-based, it makes sense that the line endings are always instead of \r . But here’s the problem – PHP will instantly parse and output the HTML as-it-is. Definition and Usage. 1. The output level is. Flags can be used to permit or restrict what the buffer is able to do. This function discards the contents of the topmost output buffer and turns off this output buffering. ob_start () starts a php feature called "output buffering" which will prevent php from directly outputting data (to the browser). – Buffer HTML Data Using the ob_start Method and Get Data Using the ob_get_contents Method in PHP Buffer String Data and Replace Chars in the String Using the ob_start Method With a Callback Function We will initialize a buffer with the ob_start method and then output a simple string which will be automatically buffered; we will then get the data. ob_end_clean(), ob_end_flush(), ob_clean(), ob_flush() and ob_start() may not be called from a callback function. Here is the link from github:. . Here, 1) A user requests for a page that stores cookies. We hope this article has been informative and useful in understanding. Given an expression and a callback, returns a string where all matches of the expression are replaced with the substring returned by the callback. . First, let's note that one of the referenced files is `req. Let's implement PHP 's ob_start and ob_get_contents functions in python3. This new value can be stored in a file, database or as a session variable, etc. The value this callback returns must be in exactly the same serialized. Used as a callback function for ob_start () to compress the contents of the buffer when sending it to the browser. stream. 5. Simply having ob_start('ob_gzhandler'); will suffice. if I remove ob_start(); and ob_end_clean() at least its printing menu without CSS. [2007-08-29 17:15 UTC] ce at netage dot bg Description: ----- it is actually a duplicate problem with 40429, but since you have closed the bug I cannot reopen it, but it is still present with all versions including the new 5. – shudder. Output buffering is a feature in PHP that allows you to capture and manipulate output before it is sent to the browser or client. I have narrowed my code to:for instant result of another php page, you can try ob_start and ob_get_clean. ini config file and looking for the output buffering configuration setting. Output buffering means that all output from the script is stored in an internal buffer instead of being…3. can please elaborate… how to kill. Push your web development skills to the next level, through expert screencasts on PHP, Laravel, Vue, and much more. ob_end_flush(); # CODE THAT NEEDS IMMEDIATE FLUSHING ob_start(); If this does not work then what may even be happening is that the client does not receive the packet. Try using output buffer like this : ob_start (); // your includes echo ob_get_clean (); Use this in all of your includes, and you will not get any errors. I think that function will be prone to further bugs, therefor using ob_start/ob_end_clean is easier to comprehend and better for future code maintenance. How to pass a callback function with parameters for ob_start in PHP? Hot Network Questions Creating buffer for MultiPolygon that covers all its surroundings in QGIS Should I send a PDF or Google Drive link to professors? Build a culture of Accountability Novel: Hidden (floating?) island with aptitude tests and sterilization after multiple. Currently I use the following way to capture the output and write to. However, ob_flush() and flush() might not work with Nginx out of the box because of. The output may be caught by another output buffer or, if there are no other output buffers, sent directly to the browser. The php script inherits your environment when you run it from shell, but not when you run it from the web. Ob _ start function is used to create an output buffer in PHP, as we are already aware that PHP is an interpreted language, i. But it seems that was a problem with the ranking. The Overflow Blog How the co. Simply having ob_start('ob_gzhandler'); will suffice. A GdImage object, returned by one of the image creation functions, such as imagecreatetruecolor(). First, call ob_start() at the beginning of your script to turn on output buffering. Use the exit () method after the header redirect. Flags can be used to. An optional output_callback function may be specified. I would like to see the results on my browser as the script is running. W3Schools offers free online tutorials, references and exercises in all the major languages of the web. Then, `flush ()` flushes the output buffer and forces the server to send the data to the browser immediately. ob_end_flush (); Note: don't forget the "speed" depends on how quick the content is actually generated and not on the speed the data is sent to the client. 自前バッファ. 逐次echo. ＋ add a note. So the echo output will be buffered. Bitmask of PHP_OUTPUT_HANDLER_* constants. it is mostly used when you want to have a chunk of html and do not want to output to the browser right away but may be used in future. The output may be caught by another output buffer or, if there are no other output buffers, sent directly to the browser. EDIT: Actually I'm having trouble confirming whether standard output buffering is available at the CLI. Sehingga output tidak langsung ditampilkan ke dalam browser melainkan akan ditampilkan terakhir-terakhir menjelang program PHP selesai dieksekusi. La función ob_start () sirve para indicarle a PHP que se ha de iniciar el buffering de la salida, es decir, que debe empezar a guardar la salida en un bufer interno, en vez de enviarla al cliente. With output buffering enabled, your program can still "output" HTML but it will not be send immediately. This function will send the contents of the topmost output buffer (if any) and turn this output buffer off. I am using the code below, but the output shows up after the whole script has finished executing. Return Values: The ob_get_length () function returns the length of the current output buffer in bytes as an integer. 1. ob_start () //Business Logic, etc header->output (); echo apply_post_filter (ob_get_clean ()); footer->output (); This ensures that PHP errors get displayed within the content part of the website, and that errors don't interfere with header and session_* calls. If it's > 0 without you calling ob_start, you know that PHP is doing the gzipping. 그러므로 출력 버퍼를 비우려면 ob_flush. 0. ob_end_flush () and flush () are functions in PHP used to control output buffering. Đoạn code trên sẽ được Lưu vào bộ nhớ đệm. The output_callback parameter may be bypassed by passing a NULL value. revo revo. ob_start doesn't work with some functions. This question is in a collective: a subcommunity defined by tags with relevant content and experts. W3Schools offers free online tutorials, references and exercises in all the major languages of the web. The code is sorta lik. And you can't redirect using the header function after you output to the page. Description ¶. ob_start()とセットで使用する関数. ob_start(); // เป็นการประกาศเพื่อให้โปรแกรม สำรองเนื้อที่ในหน่วยความจำมาเพื่อรองรับการใช้งานของ object ต่าง ๆ ที่จะเกิดขึ้นกับโปรแกรมเมื่อมีการทำงาน. ob_flush — Flush (send) the output buffer. goes to the buffer and at the end whatever is accumulated within the buffer, passes goes through the ob_start's callback. The output may be caught by another output buffer or, if there are no other output buffers, sent directly to the browser. Is ob_start necessary when the output_buffering is turned on in the php. 結果. answered Jan 4, 2014 at 7:45. 이는 사실상 모든 출력을 사용자 브라우저에 보냅니다. up. my_export_file. Which however is less reliable for multiple reasons: Even if <?php ob_start(); ?> starts the first script, whitespace or a BOM might get shuffled before, rendering it ineffective. <?php. aus. ob_gzhandler — ob_start callback function to gzip output buffer. I try with DOMPDF, but I have a problem with defining the string. 5. If it takes 10 seconds for that page to load, rather than seeing a new line every 2 seconds, then it means that it is being cached by your webserver. I am including HTML template in my shortcode by using ob_start & ob_get_clean. We will take a look at the. そして、WEBブラウザ以外にも実行環境を持つプログラミング言語です。. 1. I think in this case they mean the same thing. However, the problem is, it parses the PHP include() and stores only the HTML content. PHP7. By understanding the syntax and usage of the function, you can easily flush the output buffer and turn off output buffering. When you write your scripts, output buffering can be turned on by calling the ob_start function, and this is where it gets confusing, because you can actually start multiple "levels" of buffering — each call to ob_start will begin a new level of buffering. If this function does not return any content buffer then it will return false. Definition and Usage. Improve this answer. 4 ob_* functions. qualityBasic usage getting content between buffers and clearing, Nested output buffers, Running output buffer before any content, Processing the buffer via a callback, Using Output buffer to store contents in a file, useful for reports, invoices etc, Stream output to client, Capturing the output buffer to re-use later, Typical usage and reasons for using ob_startI have PHP (CGI) and Apache. gzfile — Read entire gz-file into an array. On first glance, this problem looks like just a XSS vulnerability, but the `ob_start();` and `ob_end_clean();` mean that all of the output between the two are buffered and then discarded. Hope this will help you. Follow edited Jan 4, 2014 at 7:53. This function discards the contents of the output buffer. here is the script. I started with MVC in PHP, basically I get most of it, but still there is little piece of code I could not understand, it’s driving me crazy. For what you are trying to do, there is no need to use ob_start and ob_flush. Just make sure that you call ob_end_flush() the appropriate number of times. php"); The function ob_start () will turn output buffering on. ob_get_clean (): string|false. The ob_get_contents() function is a built-in function in PHP that allows you to get the contents of the output buffer. ob_end_clean — Clean (erase) the output buffer and turn off output buffering. My searches on SO brought me solutions likeTo get the output of the page into a variable, you'd need to use file_get_contents with a URL. Yes it is, you really don't need the else ob_start() part, nor the gzip check. And i have seen a different example about the subject, anyway i modified the example but i'm confused at this point. Here is the example on php. 2. e. You need to kill the script after a header redirect or the code will keep running. php"); ?>. ob_start(), output buffer keeps everything in buffer without sending or displaying until it is flushed <?php ob_start(); //this has to be the first line of your page header(‘Location: page2. This function does not destroy the output buffer like ob_end_flush () does. output_compression , which turns on buffering with a different handler (I don't know how they differs), but unfortunately as. Going by the comments of OP, I'm going to assume OP wants a timer on the command line and presume the <br> was meant to convey a newline. If they are it's not the plugins that are causing it. Quoting the manual page of session_start, though :. session_start() will register internal output handler for URL rewriting when trans-sid is enabled. 100MB. Then simply echo out the results, as needed, in between the HTML code. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more. 3. First my syntax is parsed and reformatted. Load 7 more related questions Show fewer related. DEBUG_BACKTRACE_IGNORE_ARGS. 標準出力のバッファリングを有効化するPHP関数ob_start. This function discards the contents of the output buffer. ini configurations. 3. I think that function will be prone to further bugs, therefor using ob_start/ob_end_clean is easier to comprehend and better for future code maintenance. Actually, we can use type regulation - intval (ob_get_contents ()), for cheking On/Off output buffering, but it lays the possible problems in the future. I found out that I needed a necessary flag in my ob_start() to let it know that buffers can be removed. Here is the syntax of the function:In the "normal case", I don't think ob_start has to be called before session_start-- nor the other way arround. g. This is easily fixed by calling; session_write_close ();Because you should return your form output to set it on the exact position, if you use echo the it will always display in the TOP. To change this value you can either set it in php. Make sure your ROOT translates to absolute path to the file (with domain and if you use one). Every piece of text outputted while an output buffer is open is placed. any program written in PHP will be executed stepwise, one statement after another, which makes processing comparatively slow compared to others. php; ob-start; Share. When the script finishes running, or you call ob_flush (), that stored output is sent to the browser (and gzipped first if you use ob_gzhandler, which means it downloads faster). Also, you can use the header() function with ob_start() and ob_end_flush(), like this:To solve this problem, we have to store the header in a buffer and send the buffer at the end of the script, so to store the header in the buffer, we will use the php ob_start () function and to clean the buffer, we will use the ob_end_flush () function. However it would be good to see such function to get the real speed. Output buffers are stackable, that is, you may call ob_start () while another ob_start () is active. See Also. Just add ob_start(); as first line after <?php ob_start();. The output_callback parameter may be bypassed by passing a NULL value. There are two ways to end a buffer, which are ob_end_flush() and ob_end_clean() - the former ends the buffer and sends all data to output, and the latter ends the buffer without sending it to output. wrap the function to be executed in the end, after php close the connection. The optional separator parameter sets the field delimiter (one single-byte character only). Description ¶. The output buffer must be started by ob_start () with PHP_OUTPUT_HANDLER_FLUSHABLE flag. . In PHP, you can use the output control functions to capture the output of a PHP script into a variable. ob_end_clean(), ob_end_flush(), ob_clean(), ob_flush() and ob_start() may not be called from a callback function. While output buffering is active no output is sent from the script (other than headers), instead the output is stored in an internal buffer. Lo tienes al revés. My problem is that I want to keep the shopping cart live so I don't want to cache it. ob_start() is printing outputs without ending of ob_get_flush() 0. Redirect.