What is the correct syntax for using variable variables with arrays in PHP?

When using variable variables with arrays in PHP, you need to enclose the variable variable in curly braces within the array brackets. This allows PHP to properly interpret the variable variable and access the desired array element. By using this syntax, you can dynamically access array elements based on the value of a variable. Example: 

$variable = 'key';
$array = ['key' => 'value'];

// Correct syntax for using variable variables with arrays
echo $array[${$variable}]; // Output: value

Keywords

variable variables arrays syntax PHP programming

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