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@ 2015-06-13T11:16:32Z

<?php

if (version_compare(PHP_VERSION, '7.0.0', '<')) {
    define('BASIC_TYPE_HINT_REGEX', '#^Argument \d+ passed to .+? must be an instance of ([a-z]+), ([a-z]+) given#i');

    function basic_type_hint($err_lvl, $err_msg) {
        if ($err_lvl == E_RECOVERABLE_ERROR) {
            if (preg_match(BASIC_TYPE_HINT_REGEX, $err_msg, $matches)) {
                if ($matches[1] == $matches[2]) {
                    return true;
                }

                switch ($matches[1]) {
                    case 'int':
                        return $matches[2] == 'integer';
                    case 'bool':
                        return $matches[2] == 'boolean';
                    default:
                        return false;
                }
            }
        }
        
        return false;
    }

    set_error_handler('basic_type_hint');
}

function foo(int $a) {
    print $a;
}

foo(42);
foo(23);

Output for git.master, git.master_jit, rfc.property-hooks: 4223

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2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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