The PHP debug_print_backtrace() function prints a PHP backtrace which displays data from the code that led up to the debug_print_backtrace() function.

<?php
$date = date_create();
date_timestamp_set($date, 1695205245);
<?php
function a($txt) {
    b('Hello');
}

function b($txt) {
    c('World');
}

function c($txt) {
    debug_print_backtrace();
}

a('Chicken');
?>echo date_format($date, 'U = Y-m-d H:i:s');
?>

#0 c(World) called at [/home/test.php:7] #1 b(Hello) called at [/home/I2wm7m/prog.php:3] #2 a(Chicken) called at [/home/test.php:14]

debug_print_backtrace(options, limit)