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php Break 与 Continue跳出循环例子

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WBOYOriginal
2016-06-08 17:28:151286browse
<script>ec(2);</script>

有时,您可能希望让无条件循环的开始,并允许括号内的语句来决定何时退出循环。

有两个特殊的语句可用在循环使用:中断和继续。

break语句终止或For循环的同时,继续执行现行的代码如下循环后(如有)。或者,

你可以把一个数字后,折价关键字,说明如何循环结构的多层次,以摆脱。这样,埋

藏在一份声明中深层嵌套的循环可以打破最外层循环。

echo "

Example of using the Break statement:

";

for ($i=0; $i    if ($i==3){break;}
   echo "The number is ".$i;
   echo "
";
}

echo "

One more example of using the Break statement:

";

$i = 0;
$j = 0;

while ($i   while ($j     if ($j == 5) {break 2;} // breaks out of two while loops教程
    $j++;
  }
  $i++;
}

echo "The first number is ".$i."
";
echo "The second number is ".$j."
";
?>

continue语句终止了在语句块执行一或For循环的同时,继续对下一个迭代循环的执行

echo "

Example of using the Continue statement:

";

for ($i=0; $i    if (i==3){continue;}
   echo "The number is ".$i;
   echo "
";
}
?>

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