3v4l.org

run code in 300+ PHP versions simultaneously
<?php /* the default gc root size is 10,000 */ for ($i=0; $i<9998; $i++) { $array = array(); $array[0] = &$array; unset($array); } $matches = array("foo" => "bar"); /* this bucket will trigger the segfault */ $dummy = array("dummy"); /* used to trigger gc_collect_cycles */ $dummy[1] = &$dummy; $matches[1] = &$matches; $matches[2] = $dummy; preg_match_all("/(\d)+/", "foo123456bar", $matches); echo "okey";
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
okey

preferences:
226.91 ms | 405 KiB | 353 Q