How can the backtrace function in PHP be used to trace errors back to specific functions?

The backtrace function in PHP can be used to trace errors back to specific functions by providing a detailed stack trace of the function calls leading up to the error. This can help developers identify the root cause of the issue and pinpoint where the error occurred in the code. 

<?php
function foo() {
    bar();
}

function bar() {
    baz();
}

function baz() {
    $backtrace = debug_backtrace();
    
    foreach ($backtrace as $trace) {
        echo $trace['function'] . ' called in ' . $trace['file'] . ' on line ' . $trace['line'] . PHP_EOL;
    }
}

foo();
?>

Keywords

backtrace PHP errors functions trace

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