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<?php $str1 = 'football'; $str2 = 'footboll'; $str_pos = strspn($str1 ^ $str2, "\0"); printf('First difference between two strings at position %d: "%s" vs "%s"', $str_pos, $str1[$str_pos], $str2[$str_pos]); ?>
Output for 4.3.2 - 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 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
First difference between two strings at position 5: "a" vs "o"
Output for 4.3.0 - 4.3.1
Notice: Uninitialized string offset: 8 in /in/amgfv on line 6 Notice: Uninitialized string offset: 8 in /in/amgfv on line 6 First difference between two strings at position 8: "" vs ""

preferences:
295.55 ms | 402 KiB | 461 Q