File: isType.php

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File: isType.php
Role: Auxiliary script
Content type: text/plain
Description: Auxiliary script
Class: Encase PHP Functional Programming
Make functions work as if they are class functions
Author: By
Last change:
Date: 1 year ago
Size: 1,646 bytes
 

Contents

Class file image Download
<?php
namespace Encase\Functional;

/**
 * Check if the value has a given type or any of multiple given types, and
 * return the matched type.
 *
 * $type can be a type denoted by PHP's is_* functions (e.g. "iterable").
 * Additionally, it can be a class name, resulting in an instanceof check.
 * "function" is an additional type to distinguish from strings and arrays
 * that are ambiguously callable, which passes for \Encase\Functional\Func
 * or a \Closure.
 *
 * @param mixed $value The value to test.
 * @param string|array $type The type, or array of types of which $value
 * must be any one of. A class name or one of: "array",
 * "bool", "callable", "countable", "double", "float",
 * "function", "int", "integer", "long", "null",
 * "numeric", "object", "real", "resource", "scalar",
 * "string"
 * @return bool|string Returns the matched type string or FALSE if none match.
 */
function isType($value, $type)
{
    if (!
$type) {
        return
false;
    }

   
$types = (array)$type;
   
$match = false;

    foreach (
$types as $type) {
        if (\
function_exists("is_$type")) {
            if (\
call_user_func("is_$type", $value)) {
               
$match = true;
            }
        } elseif (
$type === 'function') {
            if (
$value instanceof \Closure || $value instanceof Func) {
               
$match = true;
            }
        } elseif (
$type === 'countable') { // polyfill for PHP <7.3
           
if ((\is_array($value) || $value instanceof \Countable)) {
               
$match = true;
            }
        } elseif (
$value instanceof $type) {
           
$match = true;
        }

        if (
$match) {
            return
$type;
        }
    }

    return
false;
}


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