批改状态:合格
老师批语:
以下代码实现了for , while , foreach 对数组的循环遍历操作。
<?php
$test=['t1'=>1,'t2'=>'tt','t3'=>3,'t4'=>'ts'];
for ($i=0; $i < count($test); $i++) {
echo '['.key($test).'=>'.current($test).']'.'<br>';
next($test);
}
echo "<hr>";
reset($test);
$i=0;
while ($i<count($test)) {
echo '['.key($test).'=>'.current($test).']'.'<br>';
next($test);
$i++;
}
echo "<hr>";
$test=['test1'=>11,'test2'=>22,'test3'=>33,'test4'=>44];
echo '<table cellspacing="0" cellpadding="5" border="1px ">';
echo '<tr align="center" bgcolor="skyblue">';
echo "<td>t1</td><td>t2</td><td>t3</td><td>t4</td>";
echo "</tr>";
echo "<tr>";
foreach ($test as $value) {
echo "<td>".$value."</td>";
}
echo "</tr>";
echo "</table>";
echo "<hr>";
echo "移出的元素:";
print_r(array_splice($test,1,2,array('te'=>55)));
echo "<br>插入新元素后的数组:";
print_r($test);点击 "运行实例" 按钮查看在线实例
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