How can undefined function errors, such as "Call to undefined function: links()", be effectively troubleshooted in PHP scripts?

Undefined function errors in PHP scripts typically occur when a function is called that has not been defined or included in the script. To troubleshoot this issue, you should first check if the function is defined in the script or included from an external file. If not, you need to define the function or include the file where the function is defined. 

// Check if the function exists before calling it
if (!function_exists('links')) {
    function links() {
        // Function implementation here
    }
}

// Call the function
links();

Keywords

undefined function troubleshoot PHP scripts error links

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