?? ' ' 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 vote181 views1 answer
Check current user role
PHP
0 vote194 views1 answer
Laravel observer check if field changed
PHP
25 votes191 views6 answers
Laravel carbon date format
PHP
5 votes190 views1 answer
Php get age from dob
PHP
0 vote177 views1 answer
Find template serving current page
PHP
0 vote218 views1 answer
Action after model is created laravel
PHP Laravel
2 votes220 views1 answer
Laravel get only relationship
PHP Laravel
0 vote223 views1 answer
Separate numbers with commas laravel
PHP Laravel
2 votes179 views2 answers
Php header location not working
PHP
0 vote172 views1 answer
How to loop array in laravel
PHP