3v4l.org

run code in 300+ PHP versions simultaneously

@ 2017-01-19T10:48:13Z

<?php

function getusername($user)
{
    return 'genericUser';
}

function test ($user) 
{
    {  // original question 
        $usernameA = $user ?: getusername($user);
        
        echo '$usernameA = ', var_export($usernameA, true), PHP_EOL;
    }

    { // equivalent 
        if( $user )
        {
            $usernameB = $user; 
        } 
        else
        {     
            $usernameB = getusername($user); 
        }
        
        echo '$usernameB = ', var_export($usernameB, true), PHP_EOL;
    }
}


$testCases = array('someUser', true, '', null, false, 0, @$undefined);
foreach ( $testCases as $testCase ) 
{
    echo 'test with ', var_export($testCase , true) ,' ...', PHP_EOL;
    test($testCase);
    echo 'test with ', var_export($testCase , true) ,' DONE.', PHP_EOL;
    echo PHP_EOL;
}

Output for git.master, git.master_jit, rfc.property-hooks: test with 'someUser' ... $usernameA = 'someUser' $usernameB = 'someUser' test with 'someUser' DONE. test with true ... $usernameA = true $usernameB = true test with true DONE. test with '' ... $usernameA = 'genericUser' $usernameB = 'genericUser' test with '' DONE. test with NULL ... $usernameA = 'genericUser' $usernameB = 'genericUser' test with NULL DONE. test with false ... $usernameA = 'genericUser' $usernameB = 'genericUser' test with false DONE. test with 0 ... $usernameA = 'genericUser' $usernameB = 'genericUser' test with 0 DONE. test with NULL ... $usernameA = 'genericUser' $usernameB = 'genericUser' test with NULL DONE.

This tab shows result from various feature-branches currently under review by the php developers. Contact me to have additional branches featured.

Active branches

Archived branches

Once feature-branches are merged or declined, they are no longer available. Their functionality (when merged) can be viewed from the main output page

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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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

preferences:dark modelive preview

31.76 ms | 407 KiB | 5 Q