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If you are new to PHP or just need to refresh your skills, this is the place to start. This series of tutorials will give you the basic knowledge you will need to create a simple PHP website.

PHP is a reflective programming language originally designed for producing dynamic web pages.[1] PHP is used mainly in server-side scripting, but can be used from a command line interface or in standalone graphical applications. Textual User Interfaces can also be created using ncurses.

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fpassthru

(PHP 3, PHP 4, PHP 5)

fpassthru -- Output all remaining data on a file pointer

Description

int fpassthru ( resource handle )

Reads to EOF on the given file pointer from the current position and writes the results to the output buffer.

If an error occurs, fpassthru() returns FALSE. Otherwise, fpassthru() returns the number of characters read from handle and passed through to the output.

The file pointer must be valid, and must point to a file successfully opened by fopen() or fsockopen() (and not yet closed by fclose()).

You may need to call rewind() to reset the file pointer to the beginning of the file if you have already written data to the file.

If you just want to dump the contents of a file to the output buffer, without first modifying it or seeking to a particular offset, you may want to use the readfile(), which saves you the fopen() call.

Note: When using fpassthru() on a binary file on Windows systems, you should make sure to open the file in binary mode by appending a b to the mode used in the call to fopen().

You are encouraged to use the b flag when dealing with binary files, even if your system does not require it, so that your scripts will be more portable.

Example 1. Using fpassthru() with binary files

<?php

// open the file in a binary mode
$name = './img/ok.png';
$fp = fopen($name, 'rb');

// send the right headers
header("Content-Type: image/png");
header("Content-Length: " . filesize($name));

// dump the picture and stop the script
fpassthru($fp);
exit;

?>

See also readfile(), fopen(), popen(), and fsockopen()

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PHP is a widely-used general-purpose scripting language that is especially suited for Web development and can be embedded into HTML. If you are new to PHP and want to get some idea of how it works, try the introductory tutorial. After that, check out the online manual, and the example archive sites and some of the other resources available in the links section.