PHP : Function Reference : Stream Functions : stream_get_contents PHP Examples Tutorials References

Example 2378. stream_get_contents() example

<?php

if ($stream = fopen('http://www.example.com', 'r')) {

    // print all the page starting at the offset 10

    echo stream_get_contents($stream, -1, 10);


    fclose($stream);

}



if ($stream = fopen('http://www.example.net', 'r')) {

    // print the first 5 bytes

    echo stream_get_contents($stream, 5);


    fclose($stream);

}

?>

Code Examples / Notes » stream_get_contents

jim keller

Per wez (at php.net), "the trick is to tell the recipient how big the packet is, so that it can read the correct length." In my own experience, when using PHP streams to send data bursts, the "max length" parameter seems to act more as an exact length parameter, as the stream will block indefinitely until max length is reached or until the other side fcloses() the stream. The latter is ok unless you need to keep the stream open to continue communication, in which case you have to let the receiving end know how much data to expect, or it will block indefinitely if the max length of data is not sent. You need to pack() and prepend the length of the outgoing data stream in the first 4 bytes of the packet, as follows: function send_pkt($stream, $my_data) { $len = strlen($my_data); $send_data = pack('N', $len) . $my_data; //Pack the length in a network-friendly way, then prepend it to the data. $final_len = strlen($send_data); if ( fwrite($stream, $send_data) < $final_len ) { //something went wrong, trigger error } } function recv_pkt($stream) { $packed_len = stream_get_contents($stream, 4); //The first 4 bytes contain our N-packed length $hdr = unpack('Nlen', $packed_len); $len = $hdr['len']; $recvd_data = stream_get_contents($stream, $len); return $recvd_data; }

stream_get_contents

Reads remainder of a stream into a string (PHP 5)
string stream_get_contents ( resource handle [, int maxlength [, int offset]] )

Example 2378. stream_get_contents() example

Code Examples / Notes » stream_get_contents

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stream_get_contents

Reads remainder of a stream into a string (PHP 5) string stream_get_contents ( resource handle [, int maxlength [, int offset]] )

Example 2378. stream_get_contents() example

Code Examples / Notes » stream_get_contents

Change Language

Reads remainder of a stream into a string (PHP 5)
string stream_get_contents ( resource handle [, int maxlength [, int offset]] )