How can the "Wrong datatype for second argument" error in PHP be avoided when using in_array()?

The "Wrong datatype for second argument" error in PHP when using in_array() can be avoided by ensuring that the second argument is an array. If the second argument is not an array, the function will throw an error. To avoid this issue, always pass an array as the second argument to in_array(). 

// Example of avoiding the "Wrong datatype for second argument" error in PHP
$my_array = array('apple', 'banana', 'orange');

// Correct way to use in_array() with an array as the second argument
if (in_array('banana', $my_array)) {
    echo 'Found banana in the array!';
} else {
    echo 'Did not find banana in the array.';
}

Keywords

PHP in_array() datatype error avoidance

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