What potential pitfalls should be considered when using the identity operator === in PHP?

When using the identity operator === in PHP, it is important to consider potential pitfalls related to data types. The identity operator not only compares values, but also data types. This means that if the data types of the variables being compared are not the same, the comparison may not yield the expected results. To avoid this issue, always ensure that the data types of the variables being compared are compatible. 

// Example of using the identity operator with compatible data types
$var1 = 5;
$var2 = '5';

if ($var1 === (int)$var2) {
    echo "The values are identical.";
} else {
    echo "The values are not identical.";
}

Keywords

identity operator === type juggling strict comparison data types

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