In the context of the code provided, what role does the === operator play in comparison operations and how can it be used effectively?

The === operator in PHP is a strict comparison operator that not only compares the values of two variables but also checks their data types. This means that not only do the values have to be equal, but they also have to be of the same type for the comparison to return true. This can be useful in situations where you want to ensure that both the value and the type of the variables being compared are identical. 

// Example of using the === operator for strict comparison
$var1 = 5;
$var2 = '5';

if ($var1 === $var2) {
    echo "The values and types are equal.";
} else {
    echo "The values and types are not equal.";
}

Keywords

PHP === operator comparison operations type coercion strict comparison

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