What role do parentheses play in defining conditions in PHP?

Parentheses are used in PHP to define conditions in if statements, loops, and functions. They are used to group expressions together to ensure the correct order of operations. When defining conditions, parentheses help make the code more readable and maintainable. Example: 

// Using parentheses to define a condition in an if statement
$number = 10;

if ($number > 5) {
    echo "The number is greater than 5.";
}

Keywords

parentheses conditions defining PHP syntax

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