1、数组的申请和使用：
$array=array(array(2,324,34));
echo $array[0][1];
直接申请使用：
$student[0][0]="我";
$student[0][1]="是";
$student[1][0]="谁";
$student[1][1]="维";
echo $student[1][0];
2、遍历：
foreach()是一个用来遍历数组中数据的最简单有效的方法。
<?php
$colors = array('red','blue','green','yellow');
foreach ($colors as $color) {
echo "Do you like $color? <br />";
}
?>
显示结果：
Do you like red?
Do you like blue?
Do you like green?
Do you like yellow?
2. while()
while() 通常和 list()，each()配合使用。
#example2:
<?php
$colors = array('red','blue','green','yellow');
while(list($key,$val) = each($colors)) {
echo "Other list of $val.<br />";
}
?>
显示结果：
Other list of red.
Other list of blue.
Other list of green.
Other list of yellow.
3. for()
#example3:
<?php
$arr = array ("0" => "zero","1" => "one","2" => "two");
for ($i = 0;$i < count($arr); $i++) {
$str = $arr[$i];
echo "the number is $str.<br />";
}
?>
显示结果：
the number is zero.
the number is one.
the number is two.
========= 以下是函数介绍 ==========
key()
mixed key(array input_array)
key()函数返回input_array中位于当前指针位置的键元素。
#example4
下载: list_array04.php
<?php
$capitals = array("Ohio" => "Columbus","Towa" => "Des Moines","Arizona" => "Phoenix");
echo "<p>Can you name the capitals of these states?</p>";
while($key = key($capitals)) {
echo $key."<br />";
next($capitals);
//每个key()调用不会推进指针。为此要使用next()函数
}
?>
显示结果：
Can you name the capitals of these
