What best practices should be followed when comparing variables in PHP to prevent type juggling issues?

When comparing variables in PHP, it's important to use strict comparison operators (=== and !==) to prevent type juggling issues. These operators not only compare the values of the variables but also check their types, ensuring that both the value and type match. 

// Using strict comparison operator to prevent type juggling
$var1 = 5;
$var2 = '5';

if ($var1 === $var2) {
    echo 'The variables are equal.';
} else {
    echo 'The variables are not equal.';
}

Keywords

type juggling comparison operators strict comparison data types PHP functions

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