PHP array_key_exists() Function

The array_key_exists() is an inbuilt function of PHP and is used to checks if the given key or index exists in the array.

array_key_exists() returns TRUE if the given key is set in the array. key can be any value possible for an array index.


    key: Value to check.array: An array with keys to check.


Example #1 array_key_exists() example

Example #2 array_key_exists() example

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Prem Tiwari

An engineer by profession and a passionate blogger by heart. Founder of (A Programming blog for beginners), Tech Speaker at various forums. A part from this he is an open source enthusiast, WordPress Lover, Blogger, SEO, and Growth Strategic.