/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 vote258 views1 answer
Laravel Filesystem chmod(): Operation not permitted
PHP
0 vote216 views1 answer
Worpdress pods taxonomy get custom field
PHP
0 vote239 views1 answer
Afosto/yaac error parsing certificate request
PHP
2 votes213 views1 answer
Download a file from external server using PHP - Move one project to another server
PHP
4 votes219 views3 answers
Laravel restore soft delete
PHP
9 votes228 views4 answers
Add another field in existing migration laravel
PHP
9 votes241 views4 answers
Could not open input file: artisan
PHP
13 votes219 views5 answers
Laravel add item to array
PHP
0 vote240 views2 answers
Add slashes to string
PHP
2 votes245 views1 answer
Laravel blade file naming conventine
PHP Laravel