随机数 php随机显示图片代码
php随机显示图片代码 [代码片段(22行)]
<html>
<body>
<?php
srand( microtime() * 1000000 );
$num = rand( 1, 4 );
switch( $num )
{
case 1: $image_file = "/home/images/alfa.jpg";
break;
case 2: $image_file = "/home/images/ferrari.jpg";
break;
case 3: $image_file = "/home/images/jaguar.jpg";
break;
case 4: $image_file = "/home/images/porsche.jpg";
break;
}
echo "Random Image : <img src=$image_file />";
?>
</body>
</html>
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