PHP大小写问题

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本文主要总结了PHP各种情况大小写是否敏感的问题

  • 变量名区分大小写
  • 常量名默认区分大小写
  • 函数名、方法名、类名不区分大小写
    下面的引用要格外的注意！！！parent,self,static

    “parent” and “self”, “static” LSB tokens behave inconsistent when it comes to case-sensitivity. Class names in PHP are case-insensitive, but these three keywords aren’t always, as the parser sees them as raw T_STRINGs.

  • 魔术变量不区分大小写,但默认大写
  • null、true、false不区分大小写