说明：  PHP的十个高级技巧(TXT)如果你对PHP有一定的了解或者看过一些初步的教材，这些技巧可以扩展你对PHP的认识，使你掌握一些常见的和高级的PHP功能。
(PHP ten high-level skills (TXT) If you have some knowledge about PHP, or read some preliminary materials, these techniques can extend your knowledge of PHP, so you have some common and advanced PHP functions.)