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<?php $arr1 = Array('Apple', 'Ball', 'whale', 'Dog', 'cat'); $arr2 = Array('Red apple' => 27, 'tball' => 28, 'cat' => 29, 'Dog' => 30, 'blue ball' => 31, 'dog food' => 25, 'green apple' => 111); $keys = array_keys($arr2); foreach($arr1 as $find){ $matches = preg_grep("/\b" . preg_quote($find) . "/i", $keys); foreach($matches as $key => $word){ $result[$find][] = $arr2[$word]; } } var_dump($result);
Output for 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 - 8.3.4, 8.3.6 - 8.3.7
array(4) { ["Apple"]=> array(2) { [0]=> int(27) [1]=> int(111) } ["Ball"]=> array(1) { [0]=> int(31) } ["Dog"]=> array(2) { [0]=> int(30) [1]=> int(25) } ["cat"]=> array(1) { [0]=> int(29) } }
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(4) { ["Apple"]=> array(2) { [0]=> int(27) [1]=> int(111) } ["Ball"]=> array(1) { [0]=> int(31) } ["Dog"]=> array(2) { [0]=> int(30) [1]=> int(25) } ["cat"]=> array(1) { [0]=> int(29) } }

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