PHP in_array(): Check if Array Contains Value (5 Code Examples)

How to Use PHP in_array function to check if the array contains a value Arrays are an important data structure in PHP, allowing developers to store and manipulate a collection of values. Often, developers need to check if an array contains a specific value. One way to accomplish this in PHP is using the in_array() function. This function returns a boolean value indicating whether a specified value exists in an array.  This article will discuss the syntax and usage of the in_array() function with examples. PHP in_array Code Example <?php /* Recursive approach */ $students = array( array("name" => "John", "age" => 20, "courses" => array("Math", "Science")), array("name" => "Mary", "age" => 22, "courses" => array("History", "English")), array("name" => "Peter", "age" => 24, "courses" => array("Computer Science", "Physics")) ); function searchArray($needle, $haystack) { foreach($haystack as $value) { //If array within array if(is_array($value)) { //Recursively call the function on the array.…

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