abstract：<?php//先定義兩個(gè)變量var $var1=0,$var2=0;function sum($var1,$var2){return $var1+$var2;}echo sum(3,3)?>

<?php

//先定義兩個(gè)變量

var $var1=0,$var2=0;

function sum($var1,$var2){

return $var1+$var2;

}

echo sum(3,3)

?>

Correcting teacher：查無(wú)此人Correction time：2019-04-16 10:37:22
Teacher's summary：呃，完成的不錯(cuò)。不過(guò)有點(diǎn)問(wèn)題吧。var $var1=0,$var2=0; php創(chuàng)建變量不需要用var