A better function for dumping something to the log (PHP)

error_logr.php

<?php
/**
 * Debugging output like a boss: automatically print_r the content of any arguments,
 * and print those contents + the stack trace to the error log.
 * @param As many params as you want, type is irrelevant
 */
function error_logr(/* whatever you want */) {
  $args = func_get_args();
  $message = !empty($args[0]) && is_string($args[0]) ? array_shift($args[0]) : null;
  $e = new Exception($message);
  error_log(($args ? print_r($args, true)."\n" : '').$e->getTraceAsString());
}

Use this function instead of error_log: you'll get the contents of whatever you're dumping—no need to print_r($whatever, true)—and you'll get the stack trace.