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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