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4月17号for()while()foreach()实现遍历
小蚂蚁的博客
Original
516 people have browsed it

实例

<?php
echo '<h3>数组的遍历</h3><hr color="green">';

$teacher=['id'=>10086,'name'=>'liangxiansheng','salary'=>300,'course'=>'php'];

// 用for来实现关联数组的遍历
for($i=0; $i<count($teacher);$i++){
	echo '['.key($teacher),']=>',current($teacher),'<br>';
	next($teacher);
}

echo '<hr>';


// while()循环
reset($teacher);
$i=0;
while ($i<count($teacher)) {
	echo '['.key($teacher),']=>',current($teacher),'<br>';
	next($teacher);//循环体
	$i++;//条件更新
}
echo '<hr>';

// foreach($arr os [$key=>]$value){}数组遍历专用
echo '<h3>学生信息</h3>';
echo '<ul>';
foreach ($teacher as $key => $value) {
	echo '<li>'.$key.':'.$value.'</li>';
}
echo '</ul>';

echo '<hr color="green">';
echo '<table border="1" cellpadding="3" cellspacin="0" width="300">';
echo '<caption>学员信息表</caption>';
echo '<tr bgcolor=lightskyblue><th>ID</th><th>姓名</th><th>学费</th><th>课程</th><tr>';
echo '<tr>';

foreach ($teacher as $key => $value) {
	echo '<td align="center">'.$value.'</td>';
}
echo '</tr>';
echo '</table>';


// 创建一个生日选择器
echo '<p>选择你的生日</p>';
$years=range(1950,2000);//生成指定范围的一个数组 年
echo '<select name="year">';
foreach ($years as $value) {

echo '<option value="'.$value.'">'.$value.'</option>';
}
echo '</select>';

echo '  ';

$months=range(1,12);//生成指定范围的一个数组   月
echo '<select name="year">';
foreach ($months as $value) {

echo '<option value="'.$value.'">'.sprintf("%02d",$value).'</option>';
}
echo '</select>';

echo '  ';
$days=range(1,31);//生成指定范围的一个数组   日
echo '<select name="year">';
foreach ($days as $value) {

echo '<option value="'.$value.'">'.sprintf("%02d",$value).'</option>';
}
echo '</select>';

echo '  ';

echo '  ';


 echo '<button>提交</button>';

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Correction status:Uncorrected

Teacher's comments:
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