Online PHP editor | rfc for jSTon

@ 2014-10-08T20:45:47Z

<?php

echo "Should pass" . PHP_EOL;

var_dump(to_int("0"));
var_dump(to_int(0));
var_dump(to_int(0.0));
var_dump(to_int("0.0"));

var_dump(to_int("10"));
var_dump(to_int(10));
var_dump(to_int(10.0));
var_dump(to_int("10.0"));

echo "Should fail" . PHP_EOL;

var_dump(to_int(1.5));
var_dump(to_int("1.5"));
var_dump(to_int("75e-5"));
var_dump(to_int("31e+7"));

var_dump(to_int("10abc"));
var_dump(to_int("abc10"));

var_dump(to_int(INF));
var_dump(to_int(-INF));
var_dump(to_int(NAN));
var_dump(to_int(PHP_INT_MAX * 2));

var_dump(to_int(null));
var_dump(to_int(true));
var_dump(to_int(false));
var_dump(to_int(new stdClass()));
var_dump(to_int(fopen("data:text/html,foobar", "r")));
var_dump(to_int([]));

/**
 * Returns the value as an int, or false if it cannot be safely cast
 * @param mixed $val
 * @return int
 */
function to_int($val)
{
    switch (gettype($val)) {
        case "integer":
            return $val;
        case "double":
            if ($val === (float) (int) $val) {
                return (int) $val;
            } else {
                return false;
            }
        case "string":
            $val   = trim($val, " \t\n\r\v\f"); // trim whitespace
            $float = filter_var($val, FILTER_VALIDATE_FLOAT);
            return ($float !== false && (int) $val == $float) ? (int) $val : false;
        default:
            return false;
    }
}

Output for git.master, git.master_jit, rfc.property-hooks: Should pass int(0) int(0) int(0) int(0) int(10) int(10) int(10) int(10) Should fail bool(false) bool(false) bool(false) int(310000000) bool(false) bool(false) bool(false) bool(false) bool(false) bool(false) bool(false) bool(false) bool(false) bool(false) bool(false) bool(false)

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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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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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