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continue break return函数用法与区别

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2016-06-08 17:27:101101browse
<script>ec(2);</script>

*/
$i =5;

 代码如下 复制代码
$sum =0;
for( $j =0;$j {
 if( $j == $i )
 {
  break;
 }
 else
 {
  $sum +=$j;
 }
}

echo $sum; //10

 代码如下 复制代码
$continueSum =0;
for( $i =0;$i {
 if( $i == 5 )
 {
  continue;
 }
 else
 {
  $continueSum +=$i;
 }
}
 代码如下 复制代码

echo $continueSum; //50


$a=2;


if( $a==2 )
{
 return $s=8;
}
else
{
 return $s=9;
}


echo $s;//没有什,我们把它写成函数看看


echo sv($a); //输了10

 代码如下 复制代码
function sv($a)
{
 if( $a==2 )
 {
  return 10;
 }
 else
 {
  return 11;
 }
}

/*
总结三者的区别:
 continue 跳出当前循环,并进入下次循环
 break 跳出当前的循环,往下执行其它代码
 return 终止操作,在return后面的代码都不被执行了。
 本站原创文章转载注明来源www.111cn.net/phper/php.html
*/

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