How can one avoid errors when using negation in PHP code?

To avoid errors when using negation in PHP code, it's important to properly handle the logical operator precedence. This can be done by using parentheses to explicitly define the order of operations. Additionally, it's crucial to be mindful of the type of comparison being made, as loose comparisons may lead to unexpected results. 

// Incorrect way to use negation
if (!$var == 'value') {
    echo 'Variable is not equal to value';
}

// Correct way to use negation with parentheses for clarity
if (!($var == 'value')) {
    echo 'Variable is not equal to value';
}

Keywords

negation PHP code errors debugging logical operators

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