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[mw_shl_code=php,true]for($i=0;$i<6;$i++){ $a=array(); $a[$i]=2520/6;}$a[0]=$a[0]-$a[5]/2;echo $a[0];[/mw_shl_code]结果$a[0]=-210,我换成$a[0]=$a[5]/2-$a[0]时 终于为正了。。。难道减法不是从左到右的吗
php subtraction problem-PHP Chinese website Q&A-php subtraction problem-PHP Chinese website Q&A
Look around and learn.
[mw_shl_code=php,true]<?php$a=array();for($i=0;$i<6;$i++){ $a[$i]=2520/6;}$a[0]=$a[0]-$a[5]/2;echo $a[0];[/mw_shl_code]试试这个,然后想想原因。
php subtraction problem-PHP Chinese website Q&A-php subtraction problem-PHP Chinese website Q&A
Look around and learn.
[mw_shl_code=php,true]<?php
$a=array();
for($i=0;$i<6;$i++){
$a[$i]=2520/6;
}
$a[0]=$a[0]-$a[5]/2;
echo $a[0];[/mw_shl_code]
试试这个,然后想想原因。