/PHP/Use ternary operator as null coalescing operator in php

Use ternary operator as null coalescing operator in php

<?php

$a = null;

print $a ?? 'b'; // b
print "\n";

print $a ?: 'b'; // b
print "\n";

print $c ?? 'a'; // a
print "\n";

print $c ?: 'a'; // Notice: Undefined variable: c in /in/apAIb on line 14
print "\n";

$b = array('a' => null);

print $b['a'] ?? 'd'; // d
print "\n";

print $b['a'] ?: 'd'; // d
print "\n";

print $b['c'] ?? 'e'; // e
print "\n";

print $b['c'] ?: 'e'; // Notice: Undefined index: c in /in/apAIb on line 33
print "\n";

Source: stackoverflow.com

Similar codes

0 vote249 views1 answer
Doctrine querybuilder select alias
PHP
1 vote291 views2 answers
Woocommerce redirect shop page
PHP
1 vote245 views1 answer
How to check leap year in php?
PHP
0 vote256 views1 answer
Wordpress add menu frontend
PHP Wordpress
0 vote248 views1 answer
Workpress change page title from shortcode
PHP
1 vote275 views2 answers
Create child theme in wordpress
PHP
0 vote303 views4 answers
Sweetalert laravel
PHP Laravel
0 vote300 views1 answer
Start someones laravel project
PHP Laravel
1 vote280 views2 answers
DB::enableQueryLog()
PHP
0 vote267 views1 answer
Php write to standard out
PHP