Bug #61792 [Opn->Nab]: preg_replace_callback memory leak

Edit report at https://bugs.php.net/bug.php?id=61792&edit=1 ID: 61792 Updated by: felipe@php.net Reported by: tshaw at oitc dot com Summary: preg_replace_callback memory leak -Status: Open +Status: Not a bug Type: Bug Package: PCRE related Operating System: OSX 10.7.3 PHP Version: 5.4.0 Block user comment: N Private report: N New Comment: Thank you for taking the time to write to us, but this is not a bug. Please double-check the documentation available at http://www.php.net/manual/ and the instructions on how to report a bug at http://bugs.php.net/how-to-report.php There is no memory leak, what happens is that the memory associated to the lambda functions (via create_function()) is just released in the end of execution. Previous Comments: ------------------------------------------------------------------------ [2012-04-20 21:40:54] tshaw at oitc dot com Description: ------------ $ ./ptest.php Test preg_replace_callback Iteration number 0 Iteration number 1 .... Iteration number 180951 PHP Fatal error: Allowed memory size of 268435456 bytes exhausted (tried to allocate 3072 bytes) in /Users/tshaw/Sites/surbl/ptest.php(11) : runtime-created function on line 1 Fatal error: Allowed memory size of 268435456 bytes exhausted (tried to allocate 3072 bytes) in /Users/tshaw/Sites/surbl/ptest.php(11) : runtime-created function on line 1 Test script: --------------- #!/usr/local/php5/bin/php <?PHP // #!/usr/bin/php error_reporting(E_ALL); function urlDecodeUnreservedChars( $string ) { $unreserved = array(); $unreserved[] = dechex( ord( '-' ) ); $unreserved[] = dechex( ord( '.' ) ); $unreserved[] = dechex( ord( '_' ) ); $unreserved[] = dechex( ord( '~' ) ); return preg_replace_callback( array_map( create_function( '$str', 'return "/%" . strtoupper( $str ) . "/x";' ), $unreserved ), create_function( '$matches', 'return chr( hexdec( $matches[0] ));' ), $string ); } for ($i=0; $i <5000000; $i++) { echo "Iteration number $i\n"; urlDecodeUnreservedChars( "12345" ); } ?> Expected result: ---------------- Expected it to run to completion Actual result: -------------- PHP Fatal error: Allowed memory size of 268435456 bytes exhausted (tried to allocate 3072 bytes) in /Users/tshaw/Sites/surbl/ptest.php(11) : runtime-created function on line 1 Fatal error: Allowed memory size of 268435456 bytes exhausted (tried to allocate 3072 bytes) in /Users/tshaw/Sites/surbl/ptest.php(11) : runtime-created function on line 1 ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=61792&edit=1