php array. unable to find value from the key -

please me figure out error find value key. value printed when using string not variable same value. in advance

code:

print_r($essid_data); print_r($essid_data['criticalboot']); print_r($myssid); print_r($essid_data[$myssid]);

output:

array ( [criticalboot] => array ( [0] => ccmp [1] => psk ) )  array ( [0] => ccmp [1] => psk )  criticalboot  undefined index: criticalboot

try trim() first before feeding index. like:

$myssid = trim($myssid); print_r($essid_data[$myssid]);

My