Testing for the Existence of a Key in an Array : array_key_exists « Data Structure « PHP

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PHP » Data Structure » array_key_exists

Testing for the Existence of a Key in an Array


 

<?php 

$countries = array('Germany' => 'German', 'France' => 'French', 'Spain' => 'Spanish'); 



$country = 'asdf'; 



printf("<p>%s of our visitors are from %s.</p>\n", array_key_exists($country, $countries) ? 'Some' : 'None', $country); 



?>

Related examples in the same category

1.	Checking a
2.	Checking for an element with a particular key
3.	Validating a drop-down menu with array_key_exists()

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