Checking a menu submission value : array_key_exists « Data Structure « PHP

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PHP » Data Structure » array_key_exists   Checking a menu submission value   if (! array_key_exists($_POST['order'], $GLOBALS['sweets'])) {     $errors[] = 'Please choose a valid order.'; }       Related examples in the same category 1.  Checking for an element with a particular key 2.  Validating a drop-down menu with array_key_exists() 3.  Testing for the Existence of a Key in an Array

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