What debugging techniques or tools can be used to troubleshoot unexpected redirection behavior in PHP applications?

To troubleshoot unexpected redirection behavior in PHP applications, you can use tools like Xdebug to step through the code and identify where the redirection is occurring. Another technique is to add logging statements throughout the code to track the flow of execution and pinpoint the issue. Additionally, checking for any header manipulation functions or .htaccess rules that may be causing the redirection can help in debugging the problem. 

// Example code snippet to troubleshoot unexpected redirection behavior
// Using Xdebug to step through the code
// Enable Xdebug in your PHP configuration

// Add breakpoints in the code to step through the execution
xdebug_break();

// Check for any header manipulation functions that may be causing the redirection
if(headers_sent()) {
    error_log("Headers already sent in file: " . __FILE__ . " on line " . __LINE__);
}

// Add logging statements to track the flow of execution
error_log("Executing line " . __LINE__);

// Check for any .htaccess rules that may be causing the redirection

Keywords

Xdebug PHP error logs var_dump die() header redirection

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