How can you retrieve an integer value from a variable in PHP?

To retrieve an integer value from a variable in PHP, you can use type casting or the intval() function. Type casting involves explicitly specifying the variable type, while intval() function converts a variable to an integer. Both methods ensure that the variable contains an integer value that can be used in mathematical operations or comparisons.

// Type casting
$var = "10"; // variable containing a string value
$intVar = (int) $var; // type casting to integer
echo $intVar; // output: 10

// Using intval() function
$var = "20"; // variable containing a string value
$intVar = intval($var); // converting to integer using intval() function
echo $intVar; // output: 20