How can debugging techniques be effectively used to troubleshoot PHP code in the context of URL redirection?

To troubleshoot PHP code related to URL redirection, debugging techniques can be effectively used by adding print statements or using a debugger to track the flow of the code. By checking the values of variables, conditions, and functions at different stages of the redirection process, you can identify any errors or unexpected behavior causing the issue. 

// Example code snippet for debugging PHP code related to URL redirection

// Check the value of the variables involved in the redirection process
echo "Current URL: " . $_SERVER['REQUEST_URI'] . "<br>";
echo "Target URL: " . $target_url . "<br>";

// Use a debugger to step through the code and track the flow of execution
// Set breakpoints at key points in the code to inspect variable values and conditions

// Verify if the redirection is happening as expected
if ($condition) {
    header("Location: $target_url");
    exit;
} else {
    echo "Redirection condition not met";
}

Keywords

Xdebug breakpoints var_dump error_reporting header redirection

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