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<?php $array = array_flip(['foo_bar', 'foo_baz', 'foo_bat', 'bar_baz', 'bar_bat', 'bat_bat']); var_export($array); echo "\n"; var_export(array_filter($array, function($k) { return strpos($k, "_bat") !== FALSE; }, ARRAY_FILTER_USE_KEY));
Output for 7.1.0 - 7.1.25, 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 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
array ( 'foo_bar' => 0, 'foo_baz' => 1, 'foo_bat' => 2, 'bar_baz' => 3, 'bar_bat' => 4, 'bat_bat' => 5, ) array ( 'foo_bat' => 2, 'bar_bat' => 4, 'bat_bat' => 5, )
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 array ( 'foo_bar' => 0, 'foo_baz' => 1, 'foo_bat' => 2, 'bar_baz' => 3, 'bar_bat' => 4, 'bat_bat' => 5, ) array ( 'foo_bat' => 2, 'bar_bat' => 4, 'bat_bat' => 5, )

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186.93 ms | 402 KiB | 170 Q