note 47396 deleted from function.isset by cmb

Note Submitter: jc dot michel at symetrie dot com ---- Using isset($array['key']) is useful, but be careful! using isset($array['key']['subkey']) doesn't work as one could expect, if $array['key'] is a string it seems that 'subkey' is converted to (integer) 0 and $array['key']['subkey'] is evaluated as the first char of the string. The solution is to use is_array($array['key']) && isset($array['key']['subkey']) Here is a small code to show this: <?php $ex = array('one' => 'val1','two' => 'val2'); echo '$ex = ';print_r($ex); echo "<br />"; echo " isset(\$ex['one']['three']) : "; if (isset($ex['one']['three'])) echo 'true'; else echo 'false'; echo "<br />"; echo "is_array(\$ex['one']) && isset(\$ex['one']['three']) : "; if (is_array($ex['one']) && isset($ex['one']['three'])) echo 'true'; else echo 'false'; ?> shows: $ex = Array ( [one] => val1 [two] => val2 ) isset($ex['one']['three']) : true is_array($ex['one']) && isset($ex['one']['three']) : false