abstract：<?php//先定义两个变量var $var1=0,$var2=0;function sum($var1,$var2){return $var1+$var2;}echo sum(3,3)?>
<?php
//先定义两个变量
var $var1=0,$var2=0;
function sum($var1,$var2){
return $var1+$var2;
}
echo sum(3,3)
?>
Correcting teacher：查无此人Correction time：2019-04-16 10:37:22
Teacher's summary：呃，完成的不错。不过有点问题吧。var $var1=0,$var2=0; php创建变量不需要用var