What is the significance of the error message "Fatal error: Cannot redeclare..." in PHP programming?

The error message "Fatal error: Cannot redeclare..." in PHP programming occurs when a function or class is declared more than once in the code. To solve this issue, you need to check if the function or class has already been declared before declaring it again. You can use the `function_exists()` or `class_exists()` functions to check if the function or class already exists before redeclaring it. 

if (!function_exists('myFunction')) {
    function myFunction() {
        // function implementation
    }
}

Keywords

Fatal error Cannot redeclare PHP programming function namespace

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