What does the error message "Fatal error: Cannot redeclare" in PHP indicate?

The error message "Fatal error: Cannot redeclare" in PHP indicates that a function or class is being declared more than once in the code, causing a conflict. To solve this issue, you need to check if the function or class is already declared before declaring it again. This can be done by using the `function_exists()` or `class_exists()` functions to conditionally declare the function or class only if it doesn't already exist. 

if (!function_exists('my_function')) {
    function my_function() {
        // Function implementation
    }
}

Keywords

Fatal error Cannot redeclare PHP Error message Function

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