 <p>Use <em>array_push</em>: </p> <pre><code>$array1 = array( array(1, '12-19-2014', 1113, 'credit', 50000) ); $array2 = array(1, '12-19-2014', 1111, 'debet', 50000); array_push($array1, $array2); print_r($array1); </code></pre>