我尝试在 php 中做一个简单的图像幻灯片（只是循环图像，没有链接，没有其他效果）。
经过一番谷歌搜索后，我在网上找到了以下内容：
<HTML>
<HEAD>
<TITLE>Php Slideshow</TITLE>
<script language="javascript">
var speed = 4000; // time picture is displayed
var delay = 3; // time it takes to blend to the next picture
x = new Array;
var y = 0;
<?php
$tel=0;
$tst='.jpg';
$p= "./images";
$d = dir($p);
$first = NULL;
while (false !== ($entry = $d->read())) {
if (stristr ($entry, $tst)) {
$entry = $d->path."/".$entry;
print ("x[$tel]='$entry';\n");
if ($first == NULL) {
$first = $entry;
}
$tel++;
}
}
$d->close();
?>
function show() {
document.all.pic.filters.blendTrans.Apply();
document.all.pic.src = x[y++];
document.all.pic.filters.blendTrans.Play(delay);
if (y > x.length - 1)
y = 0;
}
function timeF() {
setTimeout(show, speed);
}
</script>
</HEAD>
<BODY >
<!-- add html code here -->
<?php
print ("<IMG src='$first' id='pic' onload='timeF()' style='filter:blendTrans()' >");
?>
<!-- add html code here -->
</BODY>
</HTML>
但它只显示循环中的第一张图像。我有什么问题吗？
生成的 HTML 页面是：
<HTML>
<HEAD>
<TITLE>Php Slideshow</TITLE>
<script language="javascript">
var speed = 4000; // time picture is displayed
var delay = 3; // time it takes to blend to the next picture
x = new Array;
var y = 0;
x[0]='./images/under_construction.jpg';
x[1]='./images/BuildingBanner.jpg';
x[2]='./images/littleLift.jpg';
x[3]='./images/msfp_smbus1_01.jpg';
x[4]='./images/escalator.jpg';
function show() {
document.all.pic.filters.blendTrans.Apply();
document.all.pic.src = x[y++];
document.all.pic.filters.blendTrans.Play(delay);
if (y > x.length - 1)
y = 0;
}
function timeF() {
setTimeout(show, speed);
}
</script>
</HEAD>
<BODY >
<!-- add html code here -->
<IMG src='./images/under_construction.jpg' id='pic' onload='timeF()' style='filter:blendTrans()' ><!-- add html code here -->
</BODY>
</HTML>