print_error_trace.php

<?php
set_error_handler(function ($errno, $errstr, $errfile, $errline) {
    static $calls = 0;
    echo PHP_EOL, PHP_EOL, $errno, ' ', $errstr, ' ', $errfile, ' ', $errline, PHP_EOL;
    $bt = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS);
    print_r($bt);
    // debug_print_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS);
    if($calls ++ > 3) {
        exit(1);
    }
}, E_ALL);