PHP Fatal Error: Maximum execution time exceeded

Question

I have this problem: this script checks the pagerank of a certain list on links. When I insert ~150 links it works perfectly but if I put a great number of links it shows me the following error:

enter image description here

This is the code:

<?php
    error_reporting(E_ALL & ~E_NOTICE);
    function StrToNum($Str, $Check, $Magic)
    {
        $Int32Unit = 4294967296;  // 2^32

        $length = strlen($Str);
        for ($i = 0; $i < $length; $i++) {
            $Check *= $Magic;     
            if ($Check >= $Int32Unit) {
                $Check = ($Check - $Int32Unit * (int) ($Check / $Int32Unit));

                $Check = ($Check < -2147483648) ? ($Check + $Int32Unit) : $Check;
            }
            $Check += ord($Str{$i}); 
        }
        return $Check;
    }
    function CheckHash($Hashnum)
    {
        $CheckByte = 0;
        $Flag = 0;

        $HashStr = sprintf('%u', $Hashnum) ;
        $length = strlen($HashStr);

        for ($i = $length - 1;  $i >= 0;  $i --) {
            $Re = $HashStr{$i};
            if (1 === ($Flag % 2)) {              
                $Re += $Re;     
                $Re = (int)($Re / 10) + ($Re % 10);
            }
            $CheckByte += $Re;
            $Flag ++;    
        }

        $CheckByte %= 10;
        if (0 !== $CheckByte) {
            $CheckByte = 10 - $CheckByte;
            if (1 === ($Flag % 2) ) {
                if (1 === ($CheckByte % 2)) {
                    $CheckByte += 9;
                }
                $CheckByte >>= 1;
            }
        }

        return '7'.$CheckByte.$HashStr;
    }
    function HashURL($String)
    {
        $Check1 = StrToNum($String, 0x1505, 0x21);
        $Check2 = StrToNum($String, 0, 0x1003F);

        $Check1 >>= 2;     
        $Check1 = (($Check1 >> 4) & 0x3FFFFC0 ) | ($Check1 & 0x3F);
        $Check1 = (($Check1 >> 4) & 0x3FFC00 ) | ($Check1 & 0x3FF);
        $Check1 = (($Check1 >> 4) & 0x3C000 ) | ($Check1 & 0x3FFF);    

        $T1 = (((($Check1 & 0x3C0) << 4) | ($Check1 & 0x3C)) <<2 ) | ($Check2 & 0xF0F );
        $T2 = (((($Check1 & 0xFFFFC000) << 4) | ($Check1 & 0x3C00)) << 0xA) | ($Check2 & 0xF0F0000 );

        return ($T1 | $T2);
    }
    function getpagerank($url) {
        $query="http://toolbarqueries.google.com/tbr?client=navclient-auto&ch=".CheckHash(HashURL($url)). "&features=Rank&q=info:".$url;
        $data=file_get_contents($query);
        $pos = strpos($data, "Rank_");
        if($pos === false){} else{
            $pagerank = substr($data, $pos + 9);
            return $pagerank;
        }


    }
    if($_POST['urls'])
    {
        ?><table border="1">
        <th>URL</th>
        <th>Pagerank</th>
        <?
        $urls=trim($_POST['urls']);
        $url=explode("\n",$urls);
        foreach($url as $url)
        {
            if($url)
            {
                $url=trim($url);
                $pagerank=getpagerank($url);
                ?>
                <tr><td><?php echo $url; ?></td><td><?php echo $pagerank; ?></td></tr>
                <?        
                flush();
            }                
        }
        ?></table><?
    }
    else
    {
        ?><form action="" method="post">
        URLS:<br /><textarea name="urls" cols="50" rows="10">http://www.google.com
    http://www.yahootracer.com</textarea><br /><input type="submit" value="Check PR"/>
        </form>
        <?
    }
    ?>

Are you trying to optimize the code, or do you just want it to run, regardless of length? If it's the latter, you can adjust your timeout in your configuration. — RonaldBarzell, Dec 21 '12 at 13:52
Try putting `set_time_limit(0);` at the beginning of the script and see if that solves the problem. You can also edit your php.ini to have the same effect: http://php.net/manual/en/info.configuration.php — user1909426, Dec 21 '12 at 13:53
Lots of questions about PHP max execution time on SO. Check for instance the following link http://stackoverflow.com/questions/1420249/maximum-execution-time-of-60-seconds-exceeded-error?rq=1. — , Dec 21 '12 at 13:53
A good approach if it is just a processing script is to run it from command line, then you won't encounter that issue again. — Sorin Trimbitas, Dec 21 '12 at 14:07

score 2 · Accepted Answer · edited Dec 21 '12 at 14:03

2

You have reached the default script execution timeout. You could try use set_time_limit(0) to disable the timeout. But as probably you are running your script under webserver - then the webserver timeouts can apply, which cannot be avoided and are configured by system administrators. In this case - best thing would be to perform huge inserts by running a shell script (e.g. cronjob).

edited Dec 21 '12 at 14:03

user1909426

1,658
8
20

answered Dec 21 '12 at 13:54

Laimoncijus

8,615
10
58
81

Still a better answer in my opinion. At least I can do is upvote it. – Dec 21 '12 at 14:10

score 1 · Answer 2 · answered Dec 21 '12 at 14:02

1

You must add set_time_limit(0) after the row $query="http://toolbarqueries.google.com/tbr?client=navclient-auto&ch=".CheckHash(HashURL($url)). "&features=Rank&q=info:".$url;

answered Dec 21 '12 at 14:02

Cristian Stan

44
1
8

why there and not globally in the first lines of the file? Any particular reason? – Sorin Trimbitas Dec 21 '12 at 14:05
It is preferred to put `set_time_limit` at the beginning of the script for several reasons most notably readability and the way `set_time_limit` works. You see every time you call `set_time_limit` you are actually resetting an internal timer and if the lines preceding it take a long time to execute you might come into situation where `set_time_limit` will never be executed. That's why it should be right at the beginning of the script. – Dec 21 '12 at 14:09

PHP Fatal Error: Maximum execution time exceeded

2 Answers2

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