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@ 2026-08-06T22:14:53Z

<?php

function absint( $maybeint ): int {
    if ( ! is_numeric( $maybeint ) ) {
        return 0;
    }
    
    if ( is_float( $maybeint ) ) {
        $value = abs( $maybeint );
        if ( $value >= PHP_INT_MAX ) {
            return PHP_INT_MAX;
        } else {
            return (int) $value;
        }
    }
    
    // Convert numeric-string to int.
    $value = (int) $maybeint;
    
    // Special case for the one integer which cannot survive abs().
    if ( PHP_INT_MIN === $value ) {
        return PHP_INT_MAX;
    }
    return abs( $value );
}

$maybeints = array(
    'positive max int times 2' => PHP_INT_MAX * 2,
    'zero' => 0,
    'string' => 'foo',
    'negative 1 int' => -1,
    'positive 1 int' => 1,
    'negative min int' => PHP_INT_MIN,
    'negative min int minus 1' => PHP_INT_MIN - 1,
    'negative min int times 2' => PHP_INT_MIN * 2,
    'positive max int' => PHP_INT_MAX,
    'positive max int plus 1' => PHP_INT_MAX + 1,
    'positive max int as string' => (string) PHP_INT_MAX,
    'positive max int times 1000 as string' => (string) PHP_INT_MAX . '000',
);
foreach ( $maybeints as $case => $maybeint ) {
    echo "# $case\n\n";
    echo 'Input:  ';
    var_dump( $maybeint );
    echo 'Output: ';
    var_dump( absint( $maybeint ) );
    echo "\n";
}

Output for git.master_jit, rfc.property-hooks, git.master: # positive max int times 2 Input: float(1.8446744073709552E+19) Output: int(9223372036854775807) # zero Input: int(0) Output: int(0) # string Input: string(3) "foo" Output: int(0) # negative 1 int Input: int(-1) Output: int(1) # positive 1 int Input: int(1) Output: int(1) # negative min int Input: int(-9223372036854775808) Output: int(9223372036854775807) # negative min int minus 1 Input: float(-9.223372036854776E+18) Output: int(9223372036854775807) # negative min int times 2 Input: float(-1.8446744073709552E+19) Output: int(9223372036854775807) # positive max int Input: int(9223372036854775807) Output: int(9223372036854775807) # positive max int plus 1 Input: float(9.223372036854776E+18) Output: int(9223372036854775807) # positive max int as string Input: string(19) "9223372036854775807" Output: int(9223372036854775807) # positive max int times 1000 as string Input: string(22) "9223372036854775807000" Output: int(9223372036854775807)

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2022-12-01 RFC: Property hooks - included in PHP 8.4
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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