What steps can be taken to troubleshoot and resolve PHP errors related to function redeclaration?

When encountering PHP errors related to function redeclaration, the issue typically arises when a function is declared more than once in the same script or included file. To resolve this error, ensure that each function is only declared once by checking for duplicate function declarations and removing any redundant ones.

// Incorrect code with function redeclaration
function myFunction() {
    // Function implementation
}

function myFunction() {
    // Another implementation of the same function
}

// Corrected code without function redeclaration
if (!function_exists('myFunction')) {
    function myFunction() {
        // Function implementation
    }
}