linux下代码报notice错误

Question

checkbtext($pic,11,"呵呵"); function checkbtext($array,$n,$str){
             if(!empty($array)){
                 for($i=1;$i<=count($array);$i++){
                     if($array[$i]!=0){$j++;}
                 }
                 if($j<2){echo "<script>alert('.$str.');history.go(-1);</script>";exit;}
             }else{
                 echo "<script>alert('.$str.');history.go(-1);</script>";exit;
             }
         }红色部分报错为Notice: Undefined variable: j in E:\web_php\cdcwj.cn\function.php on line 73$pic传的是一个数组;请问如何修改

Answer 1

checkbtext($pic,11,"呵呵"); function checkbtext($array,$n,$str){
             if(!empty($array)){
                 for($i=1;$i<=count($array);$i++){
                     if($array[$i]!=0){$j++;} //这行报错
                 }
                 if($j<2){echo "<script>alert('.$str.');history.go(-1);</script>";exit;}
             }else{
                 echo "<script>alert('.$str.');history.go(-1);</script>";exit;
             }
         }

Answer 2

function checkbtext($array,$n,$str){
$j = 0;
if(!empty($array)){
for($i=1;$i<=count($array);$i++){
if($array[$i]!=0){$j++;}
}
if($j<2) {
echo "<script>alert('.$str.');history.go(-1);</script>";exit;}
}else{
echo "<script>alert('.$str.');history.go(-1);</script>";exit;
}
}