php中current、next与reset函数用法实例_PHP

WBOY
Release: 2016-05-31 19:27:47
Original
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本文实例讲述了php中current、next与reset函数用法。分享给大家供大家参考。

具体代码如下:

代码如下:

$array=array('step one','step two','step three','step four'); //定义一个数组
echo current($array)."
n"; //返回数组第一个元素
next($array); //数组指针后移一位
next($array); //数组指针后移一位
echo current($array)."
n"; //返回数组当前元素,第三个值
reset($array); //指针指向数组第一个值
echo current($array)."
n"; //返回数组第一个值

//

$info=array('red','blue','green'); //定义数组
while($result=current($info))
{
echo $result;
echo "
";
next($info);
}

//

$array=array(
'fruit1'=>'apple',
'fruit2'=>'orange',
'fruit3'=>'grape',
'fruit4'=>'apple',
'fruit5'=>'apple'); //定义数组
while($fruit_name=current($array)) //循环获取数组当前值
{
if($fruit_name=='apple') //如果当前值为apple
{
echo key($array).'
'; //输出当前值的键名
}
next($array); //数组指针下移一步
}

希望本文所述对大家的PHP程序设计有所帮助。

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