<?php function array_search_by_partial_key(array $array, $partial) { return array_filter( $array, function ($key) use ($partial) { return false !== strpos($key, $partial) || false !== strpos($partial, $key); }, ARRAY_FILTER_USE_KEY ); } $array = [ 'Index' => 'Value', 'Mutex' => 'Foo', 'dexter' => 'morgan' ]; var_dump([ 'MyIndex' => array_search_by_partial_key($array, 'MyIndex'), 'dex' => array_search_by_partial_key($array, 'dex'), ]);
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Value for `_results` contains invalid data `array`