php获取错误信息的方法

function error_reg(){
 $ar=array(
  E_ERROR => error,
  E_WARNING => warning,
  E_PARSE =>prase,
  E_NOTICE => notice
 );
 register_shutdown_function(function() use ($ar){
  $ers=error_get_last();
  if($ers[type]!=8 && $ers[type]){
   $er=$ar[$ers[type]].$ers[type].: . .$ers[message]. => .$ers[file]. line:.$ers[line]. .date(Y-m-d H:i:s)."\n";
   error_log($er,3,/tmp/php_error.log);
  }
 });
 set_error_handler(function($a,$b,$c,$d) use ($ar){
  if($a!=8 && $a){
   $er=$ar[$a].$a.: .$b. => .$c. line:.$d. .date(Y-m-d H:i:s)."\n";
   error_log($er,3,/tmp/php_error.log);
  }
 },E_ALL ^ E_NOTICE);
}