is_array — Finds whether a variable is an array
$yes = array('this', 'is', 'an array');echo is_array($yes) ? 'Array' : 'not an Array';echo "\n";$no = 'this is a string';echo is_array($no) ? 'Array' : 'not an Array';in_array — Checks if a value exists in an array
$os = array("Mac", "NT", "Irix", "Linux");if (in_array("Irix", $os)) { echo "Got Irix";}if (in_array("mac", $os)) { echo "Got mac";}
goot
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