What steps can be taken to prevent the error "in_array(): Wrong datatype" when working with arrays in PHP?

The error "in_array(): Wrong datatype" occurs when the in_array() function in PHP is used with a datatype that is not supported. To prevent this error, ensure that the value being searched for is of the correct datatype. If necessary, typecast the value to match the datatype expected by in_array(). 

// Example code snippet to prevent "in_array(): Wrong datatype" error
$value = "3"; // Value to search for
$array = [1, 2, 3, 4, 5]; // Array to search within

// Typecast the value to integer before using in_array()
if (in_array((int)$value, $array)) {
    echo "Value found in array!";
} else {
    echo "Value not found in array.";
}

Keywords

in_array datatype arrays PHP error

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