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

The error message "Fatal error: Cannot redeclare counter()" indicates that the function "counter()" has been declared more than once in the PHP code, which is not allowed. To solve this issue, you need to ensure that the function is only declared once in your code. This can be done by checking if the function exists before declaring it using the function_exists() function. 

if (!function_exists('counter')) {
    function counter() {
        // Function logic here
    }
}

Keywords

Fatal error redeclare counter() PHP

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