php url数据获取在特定时间停止

Question

I am using php 5.2 and I am fetching data from url using file_get_contents function. This is loop for 5000 and I have divided into 500 slots and set a script like this. For 500 it is taking 3 hours to complete because for some url it is taking too much time and for some it is in 1 sec that is fine.

What I want if url is taking more than 30 sec then skip and go for next. I want to stop fetch after 30 sec.

    <?php
// Create the stream context
$context = stream_context_create(array(
    'http' => array(
        'timeout' => 1       // Timeout in seconds
    )
));

// Fetch the URL's contents
echo date("Y-m-d H:i:s")."
";
$contents = file_get_contents('http://example.com', 0, $context);
echo date("Y-m-d H:i:s")."
";
// Check for empties
if (!empty($contents))
{
    // Woohoo
//    echo $contents;
echo "file fetched";
}
else
{
echo $contents;
echo "more than 30 sec"; 
}
?>

I have already done that it is not working for me because file_get_contents function is not stoping it will continue , then only thing now I am getting no result after 30 sec but time it is taking sameas u can see in output. Output of php

2012-03-09 11:26:38 2012-03-09 11:26:40 more than 30 sec

Answer 1

You can set the HTTP timeout. (Not tested)

<?php
$ctx = stream_context_create(array(
    'http' => array(
        'timeout' => 30
     )
));
file_get_contents("http://example.com/", 0, $ctx); 

Source

Edit: I don't know why it isn't working with this code by you. But if you don't manage it to bring it to work with this you may also want to give CURL a try. This could be eventually also faster for that (but I don't know if that is really faster...).
If that would work for you, you could than use the curl_setopt function to set the timeout time with the CURLOPT_TIMEOUT flag.