Hello folks! welcome back to a new section of our tutorial on PHP. In this tutorial guide, we are going to be studying about the PHP array_key_exists() Function.
The array_key_exists() function returns true if the given key is set in the array.
The array_key_exists() function returns true if the given key is set in the array.
Syntax
Following below is the syntax to use this function -
bool array_key_exists ( $key, $array );
Parameter Details
Sr.No | Parameter & Description |
---|---|
1 | key(Required) The key to be searched. |
2 | array(Required) This is an array to be searched |
Return Value
It returns TRUE if the given key exists in the array, else False.
Example
Try out the below example -
<?php $input = array('first' => 10, 'second' => 400); if (array_key_exists('first', $input)) { echo "The 'first' element is in the array"; } ?>
Output
When the above code is executed, it will produce the following result -
The 'first' element is in the array
READ: PHP split() Function
Alright guys! This is where we are going to be rounding up for this tutorial post. In our next tutorial, we are going to be discussing about PHP array_keys() Function.
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Feel free to ask your questions where necessary and we will attend to them as soon as possible. If this tutorial was helpful to you, you can use the share button to share this tutorial.
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Thanks for reading and bye for now.