利用不同的方式循环数组
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
</head>
<body>
<?php
$arr = ['王','武','郑','王','赵','钱','孙','李'];
for($i=0;$i<count($arr);$i++){
echo $arr[$i].",";
}
echo "<hr>";
$i=0;
while($i<count($arr)){
echo $arr[$i]."_";
$i++;
}
echo "<hr>";
foreach($arr as $val){
echo $val.",";
}
?>
</body>
</html>
