关于php变量的值

Question

<?php echo $arcRow['click']; ?>把调用的值等于$arcRow['click']-50代码应当怎么写

Answer 1

要减50？
可以用个变量撒
也可以echo "$arcRow['click']-50"

Answer 2

如果变量$arcRow['click']是数值，直接$arcRow['click']=$arcRow['click']-50就行了，否则先转换为数值

Answer 3

<?php 
$tmp=$arcRow['click']-50;
echo $tmp; 
?>

Answer 4

<?php echo (intval($arcRow['click'])-50); ?>
试试？如果不行就分开写吧，像3楼那样

Answer 5

<?php 
$temp=intval($arcRow['click']-50); 
echo $temp; 
?>

Answer 6

<?php echo $arcRow['click']-50; ?>

Answer 7

<?php echo (intval($arcRow['click'])-50); ?>  就这个吧,省着你麻烦.

Answer 8

<?php echo (intval($arcRow['click'])-50);?>