?? ' ' in php

$$ in php

$x = "abc";  
$$x = 200;  
echo $x."<br/>";  
echo $$x."<br/>";  
echo $abc; 

// output:
abc
200
200

?? ' ' in php

// Null Coalesce Operator - $statement ?? ''
$categoryName = $category->name ?? 'Not Available';

// The above Statement is identical to this if/else statement
if (isset($category->name)) {
    $categoryName = $category->name;
} else {
    $categoryName  = 'Not Available';
}

-2

Similar codes

1 vote203 views2 answers
Php date strtotime add days
PHP
6 votes185 views1 answer
Qual é a melhor linguagem de
PHP
31 votes192 views6 answers
Update or create laravel
PHP Laravel
0 vote156 views1 answer
Use s3 storage laravel
PHP
16 votes147 views5 answers
Laravel blade for loop
PHP
0 vote238 views1 answer
Fakher ul islam khan
PHP
6 votes154 views2 answers
Php cut off first x characters
PHP
0 vote153 views1 answer
Link title to blog post wordpress in the loop
PHP
0 vote159 views2 answers
Woocommerce show data to cart page
PHP
0 vote167 views1 answer
Wordpress fs_method direct
PHP