?? ' ' 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

0 vote175 views1 answer
Snap store phpstrom
PHP
5 votes218 views2 answers
Refresh a specific migration laravel
PHP Laravel
48 votes249 views2 answers
Laravel check my laravel version
PHP Laravel
12 votes228 views6 answers
Return redirect with message laravel
PHP Laravel
1 vote208 views2 answers
Fillable vs guarded laravel
PHP
5 votes171 views2 answers
Php time a script
PHP
0 vote214 views1 answer
Filter child table data from parent laravel eloquent
PHP
0 vote190 views1 answer
Get url segment in php
PHP
31 votes178 views4 answers
Laravel seed fresh
PHP
0 vote180 views1 answer
WordPress Convert Object To Array
PHP