$$ in php
$x = "abc";
$$x = 200;
echo $x."<br/>";
echo $$x."<br/>";
echo $abc;
// output:
abc
200
200$$ 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';
}Copyright © 2021 Codeinu
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