How to check if a key exists in an array in PHP
In this tutorial, we are going to see how to check if a key exists in an array in PHP. You can use PHP’s array_key_exists() function to check whether or not a given key or index exists in an array. This function returns TRUE on success or FALSE on failure.
How to check if a key exists in an array in PHP
<?php
$langages = array("PHP"=>"Back-End", "CSS"=>"Front-End", "Python"=>"Back-End");
// check if 'PHP' key exists in '$langages' array
if(array_key_exists("PHP", $langages)){
echo "key exists";
}else{
echo "key not exists";
}
?>
Output:
key exists
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array_key_exists is depricated