PHP保留的方法名称

Question

Other than those described by http://php.net/manual/en/reserved.keywords.php, are there any method names I shouldn't use? For instance, can I make a method public function echo($x) and use it as $this->echo('Hello');?

EDIT> Evidently, I can't use echo because it is a language constructs, but could use min. Following doesn't result in an error.

<?php
  class myClass {
      public function min($x){echo(min($x));}
  }

  $obj=new myClass();
  $obj->min(array(5,3,6,3));
?>

Answer 1

You can't use language construct names in a classes regarding namespaces, while you can use built-in function names in namespace. A namespace in this case is a method of a class.

$foo = new Foo();

$foo->array_key_exists(); // Good
$foo->isset(); // Fatal error, since isset() a language construct
$foo->include(); // Also fatal error

The reason you don't get a fatal error when using min() is because its a built-in function.

Generally it's considered bad practice using built-in names in your own implementations because that might confuse another developers that will be reading your code in future.