What is the purpose of using in_array() in the isthere() function in the given PHP code?

The purpose of using in_array() in the isthere() function is to check if a specific value exists within an array. It allows the function to determine if the desired value is present in the array, returning true if it is found and false if it is not. This is essential for validating whether a certain value is included in an array before proceeding with further actions. 

<?php
function isthere($value, $array) {
    if (in_array($value, $array)) {
        return true;
    } else {
        return false;
    }
}

$values = array(1, 2, 3, 4, 5);
$searchValue = 3;

if (isthere($searchValue, $values)) {
    echo "Value exists in the array.";
} else {
    echo "Value does not exist in the array.";
}
?>

Keywords

in_array isthere() PHP code function purpose

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