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Strings & Patterns Learning Mode
Qusetions Index 36/158
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Consider the following code snippet:

<php
$hello = 'world';
$world = 'hello';
echo $$$hello;
?>

What will be the output?


world
Correct: world

Explanation: Answer option C is correct.

This code snippet is an example of variable of variables. It will be solved in the following steps:

$$$hello //First $hello will be resolved and it will become $$world
$$world //It will again resolve and will become $hello
$hello //It will again resolve and will become world
//so the output will be world

Reference: https://php.net/manual/en/language.variables.variable.php

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