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Courses in the relevant section：PHP flow control if statement

<form action='' medhod='get'> <input type="text" name="num"> <input type="submit" value="提交"> </form> <?php $num=$_GET['num']; $a = $num%4 == 0; $b = $num%100 != 0; $c = $num%400 ==0; if(($a&&$b)||$c){ echo '今年是閏年'; }else{ echo '今年是平年'; } ?>

2019-03-250個贊

Courses in the relevant section：Four parameter types of functions: value parameters/reference parameters/default parameters/variable parameters

func_get_args() 獲取參數(shù)列表轉(zhuǎn)為數(shù)組

2019-03-290個贊

Courses in the relevant section：Variable function and callback implementation: the callback function is an elf

用call_user_func_arry(可變函數(shù)名稱，[參數(shù)列表數(shù)組]）來調(diào)用可變函數(shù)

2019-03-290個贊

Courses in the relevant section：Secrets of function creation and calling: I won’t tell you about it for ordinary people

自執(zhí)行函數(shù)/一次性函數(shù) echo (function ($a,$b){ return $a.+$b; })(20,30);

2019-03-290個贊