<?php ini_set('pcre.backtrack_limit', 100); for ($len = 1000; $len <= 1001; $len++) { $x = str_repeat("x", $len); $ret = preg_match("/x+x+y/", $x); echo "len = " . $len . "\n"; echo "preg_match = " . $ret . "\n"; echo "PREG_BACKTRACK_LIMIT_ERROR = " . PREG_BACKTRACK_LIMIT_ERROR . "\n"; echo "preg_last_error = " . preg_last_error() . "\n"; echo "\n"; }
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