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<?php $array2 = array( array('customer_id' => '01', 'categories' => '',), array('customer_id' => '02', 'categories' => '',), array('customer_id' => '03', 'categories' => '20,26,18',), array('customer_id' => '04', 'categories' => '45,118',), array('customer_id' => '05', 'categories' => '45,118,201,18,55',), ); $like = 18; Foreach($array2 as $val){ If(preg_match("/\b" . $like . "\b/", $val['categories'])){ $res[] = $val; } } Var_dump($res);
Output for git.master, git.master_jit, rfc.property-hooks
array(2) { [0]=> array(2) { ["customer_id"]=> string(2) "03" ["categories"]=> string(8) "20,26,18" } [1]=> array(2) { ["customer_id"]=> string(2) "05" ["categories"]=> string(16) "45,118,201,18,55" } }

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