PHP static variable usage, PHP static variable access method

Class child{ P Ublic $name; //define and initialize a static variable $nums reference link: PHP static variable initialization public static $nums =0; function __construct ($name) { $this->name= $name; } Public Function join_game () { //self:: $nums use static variable self:: $n Ums+=1; Echo $this->name. " Added snowmen game "; } } //Create three children $child 1=new Child ("Li Kui"); $child 1->join_game (); $child 2=new Child ("Zhang Fei"); $child 2->join_game (); $child 3=new Child ("Tang priest"); $child 3->join_game (); //See how many people are playing the game echo " has this". Child:: $nums; copy code

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