What potential pitfalls should PHP developers be aware of when using logical operators like AND and &&?

When using logical operators like AND and && in PHP, developers should be aware of the difference in precedence between the two operators. The AND operator has a lower precedence than the && operator, which means that using AND in combination with other operators may lead to unexpected results. To avoid this issue, developers should use parentheses to explicitly define the order of operations when mixing different logical operators. 

// Incorrect usage of logical operators
if ($a > 0 && $b < 10 AND $c == 5) {
    // This condition may not work as expected due to operator precedence
}

// Corrected code using parentheses to explicitly define order of operations
if (($a > 0 && $b < 10) && $c == 5) {
    // This condition will work as expected
}

Keywords

PHP logical operators AND && pitfalls

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