How can PHP developers handle the order of operations in mathematical expressions entered by users, such as performing division before addition?
When users enter mathematical expressions, PHP developers can handle the order of operations by utilizing the eval() function in PHP. This function evaluates a string as PHP code, allowing developers to execute mathematical expressions according to the correct order of operations. By using the eval() function, developers can ensure that division is performed before addition, as per the mathematical rules.
$user_input = "10 + 5 / 2"; // Example user input
$result = eval('return ' . $user_input . ';'); // Evaluate the user input
echo $result; // Output the result
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