$$ in php
$x = "abc";
$$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
// Create a new instance of MyObject into $obj
$obj = new MyObject();
// Set a property in the $obj object called thisProperty
$obj->thisProperty = 'Fred';
// Call a method of the $obj object named getProperty
$obj->getProperty();?? ' ' 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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