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run code in 500+ PHP versions simultaneously
<?php $a="abc123"; var_dump(mb_ereg_replace("123","def\\",$a));
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.3 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.31, 8.3.0 - 8.3.31, 8.4.1 - 8.4.22, 8.5.0 - 8.5.7
string(7) "abcdef\"
Output for 7.3.0 - 7.3.2
string(8) "abcdef\"
preferences:
81.08 ms | 1633 KiB | 4 Q