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  • Difference Between $a and $$a in PHP

    @qazi.raza
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    $$a uses the value of the variable whose name is the value of $a.
    It means $$a is known as reference variable where as $a is normal variable.
    It allows you to have a variable of variable This program can create the variable name the same way it can create any other string.

    PHP

    <?php

    $test = "hello findnerd";
    $a = "test";
    echo $$a;

    //output will be hello findnerd
?>
    php
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