返回当前元素键和值，然后向前移动内部指针 ：

<?php
$people = array("Peter", "Joe", "Glenn", "Cleveland");
print_r (each($people));
?>

定义和用法

each()函数返回当前元素键和值，然后向前移动内部指针。

注意：each()函数在PHP 7.2中已弃用。

相关方法：

• current() - 返回数组中当前元素的值
• end() - 将内部指针移动到数组中的最后一个元素
• next() - 将内部指针移动到数组中的下一个元素
• prev() - 将内部指针移动到数组中的先前元素
• reset() - 将内部指针移动到数组的第一个元素

句法

each(array)

参数值

技术细节

更多例子

与页面顶部的一个例子相同，但有一个循环输出整个数组 ：

<?php
$people = array("Peter", "Joe", "Glenn", "Cleveland");

reset($people);

while (list($key, $val) = each($people))
  {
  echo "$key => $val<br>";
  }
?>

所有相关方法的演示：

<?php
$people = array("Peter", "Joe", "Glenn", "Cleveland");

echo current($people) . "<br>"; // The current element is Peter
echo next($people) . "<br>"; // The next element of Peter is Joe
echo current($people) . "<br>"; // Now the current element is Joe
echo prev($people) . "<br>"; // The previous element of Joe is Peter
echo end($people) . "<br>"; // The last element is Cleveland
echo prev($people) . "<br>"; // The previous element of Cleveland is Glenn
echo current($people) . "<br>"; // Now the current element is Glenn
echo reset($people) . "<br>"; // Moves the internal pointer to the first element of the array, which is Peter
echo next($people) . "<br>"; // The next element of Peter is Joe

print_r (each($people)); // Returns the key and value of the current element (now Joe), and moves the internal pointer forward
?>

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