Function and usage of rest_are_values_equal() in wordpress


Answers ( 1 )


    The rest_are_values_equal() function in WordPress is designed to check the equality of two values, adhering to the semantics of JSON Schema. Here's a detailed explanation of its functionality and usage:


    • Name: rest_are_values_equal
    • Purpose: To check the equality of two values, following JSON Schema semantics.


    • This function is used to compare two values for equality.
    • It ignores the order of properties when the values are objects.
    • A crucial aspect of this function is that the values being compared must have already been sanitized or coerced to their native types. This means that the values should be in a format that is directly comparable, such as strings, numbers, or boolean values, and not in a raw form that might come from user input or external sources.


    • $value1 (mixed, required): The first value to be compared. This can be of any type (string, number, object, etc.), but it should be sanitized or coerced to its native type.
    • $value2 (mixed, required): The second value to be compared, with the same requirements as $value1.


    • Type: bool
    • Description: The function returns true if the values are equal and false otherwise. The equality check is done based on the JSON Schema semantics, which means it's more than just a simple equality check; it also considers the type and structure of the values.

    Sample Usage:

    Here's an example of how you might use rest_are_values_equal():

    $value1 = ['a' => 1, 'b' => 2];
    $value2 = ['b' => 2, 'a' => 1];
    // Coerce values to native types if needed
    // (in this case, $value1 and $value2 are already in native array format)
    $is_equal = rest_are_values_equal($value1, $value2);
    if ($is_equal) {
        echo 'The values are equal.';
    } else {
        echo 'The values are not equal.';

    In this example, $value1 and $value2 are associative arrays. The function will return true because it ignores the order of the properties in the objects, and both arrays contain the same key-value pairs.

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