?: php

Php != operator

$a == $b	Equal	TRUE if $a is equal to $b after type juggling.
$a === $b	Identical	TRUE if $a is equal to $b, and they are of the same type.
$a != $b	Not equal	TRUE if $a is not equal to $b after type juggling.
$a <> $b	Not equal	TRUE if $a is not equal to $b after type juggling.
$a !== $b	Not identical	TRUE if $a is not equal to $b, or they are not of the same type.
$a < $b	Less than	TRUE if $a is strictly less than $b.
$a > $b	Greater than	TRUE if $a is strictly greater than $b.
$a <= $b	Less than or equal to	TRUE if $a is less than or equal to $b.
$a >= $b	Greater than or equal to	TRUE if $a is greater than or equal to $b.
$a <=> $b	Spaceship	An integer less than, equal to, or greater than zero when $a is less than, equal to, or greater than $b, respectively. Available as of PHP 7.

?: php

<?php
    var_dump(5 ?: 0); // 5
    var_dump(false ?: 0); // 0
    var_dump(null ?: 'foo'); // 'foo'
    var_dump(true ?: 123); // true
    var_dump('rock' ?: 'roll'); // 'rock'
?>

What is php?

PHP stands for Hypertext Preprocessor. 
It is an open source server-side scripting language which is widely used for web development.
It supports many databases like MySQL, Oracle, Sybase, Solid, PostgreSQL, generic ODBC etc.

Php ?? vs ?:

<?php
var_dump(null ?? '`null` is null'); // `null` is null
var_dump(null ?: '`null` is empty'); // null
var_dump(true ?? '`true` is null'); // true
var_dump(true ?: '`true` is empty'); // true
var_dump(false ?? '`false` is null'); // false
var_dump(false ?: '`false` is empty'); // `false` is empty"
var_dump('' ?? 'empty string is null'); // ""
var_dump('' ?: 'empty string is empty'); // "empty string is empty"
var_dump(empty(null) ?: '`null` is not empty'); // true

Source: code.sololearn.com

Php ?:

// Example usage for: Ternary Operator
$action = $_POST['action'] ?: 'default';

// The above is identical to this if/else statement
if (empty($_POST['action'])) {
    $action = 'default';
} else {
    $action = $_POST['action'];
}

Similar codes

0 vote344 views1 answer
Js php number format space
PHP
0 vote343 views2 answers
How to fix Column not found: 1054 Unknown column 'api_token' in 'where clause' (SQL: select * from `users` where `api_token laravel
PHP Laravel
0 vote334 views1 answer
In ImageRetriever.php line 305 at ImageRetriever->getNoPictureImage(object(Language)) in FrontController.php line 1527
PHP
1 vote340 views1 answer
Class 'illuminate support facades input' not found laravel 7
PHP Laravel
5 votes361 views6 answers
Php get only numbers from string
PHP
17 votes312 views2 answers
Array empty check in php
PHP
1 vote346 views1 answer
Xdebug won't step over in phpstorm
PHP
6 votes369 views1 answer
Laravel bootstrap ui
PHP Laravel
0 vote267 views1 answer
Apache laravel htaccess
PHP
0 vote306 views1 answer
Convert am pm time to 24 hour in php
PHP