|| vs. or: Which Logical OR Operator Takes the Lead?

Comparing Logical Operators: || vs. or

When working with logical operators, namely || (OR) and or, the question arises regarding which one is superior. While both serve the purpose of combining Boolean expressions, they exhibit subtle differences.

According to established conventions, || is the more widely adopted operator. This is primarily due to its higher precedence, which ensures that || operations are evaluated before or operations. This behavior aligns with our intuitive understanding of logical OR, where the outcome should be determined before moving on to the next expression.

In contrast, the or operator has a lower precedence. This means that it will be evaluated after other operators on the same line, potentially leading to unexpected results. Consider the following example:

$result = true and false or true;

Using the or operator, the expression is evaluated as follows:

1. true and false evaluate to false.
2. false or true evaluates to true.

The final result is true, which may not be the intended outcome.

To avoid such issues, it is recommended to consistently use || for logical OR operations. Its higher precedence ensures unambiguous evaluation and aligns with the expected order of operations in logical reasoning.

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