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Homephp教程php手册php中使用key,value,current,next和prev函数遍历数组的方法

这篇文章主要介绍了php中使用key,value,current,next和prev函数遍历数组的方法,较为详细的分析了php中数组遍历的常用技巧与实例用法,需要的朋友可以参考下

本文实例讲述了php中使用key,value,current,next和prev函数遍历数组的方法。分享给大家供大家参考。具体分析如下:

php中针对数组遍历有一系列的函数使我们可以非常方便的操作数组,要遍历一个数组,第一步就是要将指针指向数组开头,使用reset()函数。

使用prev()和next()函数可以查看数组的上一个和下一个元素。在然和位置都可以使用current()函数获得当前的值,使用key()函数获得键值

$array = array('foo' => 'bar', 'baz', 'bat' => 2);
function displayArray(&$array) {
reset($array);
while (key($array) !== null) {
echo key($array) .": " .current($array) . PHP_EOL;
next($array);
}
}

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