3f 3f 27 27 in php

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Tatiana
09 Jan 2018
1$x = "abc";  
2$$x = 200;  
3echo $x."<br/>";  
4echo $$x."<br/>";  
5echo $abc; 
6
7// output:
8abc
9200
10200
Chris
13 Jul 2017
1// Null Coalesce Operator - $statement ?? ''
2$categoryName = $category->name ?? 'Not Available';
3
4// The above Statement is identical to this if/else statement
5if (isset($category->name)) {
6    $categoryName = $category->name;
7} else {
8    $categoryName  = 'Not Available';
9}
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