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<?php $array = ['oooo', 'no', 'mmmm', 'yes']; $needle = 'Yes'; foreach ($array as $i => $v) { if (stripos($v, $needle) !== false) { $found = $i; break; } } echo $found ?? 'Not found';
Output for 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.26, 8.4.1 - 8.4.13
3

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73.38 ms | 406 KiB | 5 Q