How can $_GET[$var] be filled with a variable in PHP?

To fill $_GET[$var] with a variable in PHP, you can use the variable variable syntax. This allows you to dynamically create a variable name based on the value of another variable. By concatenating the variable name with the value of $var, you can access the corresponding value in the $_GET superglobal array. 

$var = 'foo';
$value = $_GET[$var];
echo $value;

Keywords

$_GET variable PHP filling syntax

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