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Nov 202010
 

What are PHP variable variables?

Answer:

A variable variable takes the value of a variable and treats that as the name of a variable.

Example:

<?php

$foo = "bar";
$bar = "foo";

echo $foo;  // print "bar"
echo $$foo; // print "foo", since $foo = "bar", thus $$foo = $bar

Reference: http://il2.php.net/manual/en/language.variables.variable.php

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