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POParse large text file with Perl crashes when run from PHP
 

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  1. POParse large text file with Perl crashes when run from PHP
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    <p>I'm using Perl script to parse and create JSON output for use in PHP.</p> <p>Basically I'm parsing large text files(5-20MB) using Perl, with data as following:</p> <pre><code>XXXXXXYYYYYYYYYYYYYZZZZZZZZZYYYYYYYYYPPPPPPPPPPP XXXXXXYYYYYYYYYYYYYZZZZZZZZZYYYYYYYYYPPPPPPPPPPP XXXXXXYYYYYYYYYYYYYZZZZZZZZZYYYYYYYYYPPPPPPPPPPP XXXXXXYYYYYYYYYYYYYZZZZZZZZZYYYYYYYYYPPPPPPPPPPP </code></pre> <p>The script prints JSON output of each line of data from file:</p> <pre><code>{ "1" : "XXXXXXYYYYYYYYYYYYYZZZZZZZZZYYYYYYYYYPPPPPPPPPPP", "2": ... } </code></pre> <p>When ran from terminal, it goes over 100,000 lines of such file in 1.5 seconds, successfully creating JSON.</p> <p>But when I run the script from within PHP using </p> <pre><code>exec("/usr/bin/perl script.pl input_file.txt",$output); print_r(json_decode($output[0],true); </code></pre> <p>it crashed. Though, if I give it file with 2000-3000 lines, it works well. Not using json_decode and only doing var_dump of $output variable works as well.</p> <p>I assume it has to do with json_decode.</p> <p>Is there other way to do this? Suggestions? Solutions?</p> <p>p.s. I've increased the PHP memory_limit to 128MB.</p> <p>Thank you.</p> <p><strong>EDIT:</strong></p> <p>Perl Script:</p> <pre><code>#!/usr/bin/perl -w use strict; use warnings; my $file = $ARGV[0]; my $id = 0; open my $info, $file or die "Could not open $file: $!"; print "{"; while( my $line = &lt;$info&gt;) { print "\"$id\" : " . "\"" . trim($line) . "\""; print ',' unless eof; $id++; } print "}"; sub trim { (my $s = $_[0]) =~ s/^\s+|\s+$//g; return $s; } close $info; </code></pre>
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    1. USMarko Aleksić
    1. USMarko Aleksić
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    1. COWhat sort of error in PHP are you getting?
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      1. POParse large text file with Perl crashes when run from PHP
      1. USNathan C
    2. COWhen I run it from console, doesn't show anything. when I run it from browser and do print_r(json_decode($output[0],true)); - shows "Server Error" HTTP 500.
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      1. POParse large text file with Perl crashes when run from PHP
      1. USMarko Aleksić
    3. COWhat about your error log?
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      1. POParse large text file with Perl crashes when run from PHP
      1. USNathan C
 

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