1. If a method c++an be static, declare it static. Speed improvement is by a factor of 4. 如果一个方法可静态化,就对它做静态声明.速率可提升至4倍. 2. echo is faster than print. echo 比 print 快. 3. Use echo's multiple parameters instead of string concatenation. 使用echo的多重参数(译注:指用…