我使用以下代码从文件夹中动态选择图像，然后在幻灯片中显示。。但这个代码只选择第一个图像。。。请指引我哪里有错。。。
PHP文件名为：test.PHP
<?php
header("content-type: application/x-javascript");
function returnimages($dirname=".") {
$files = array();
$curimage = 0;
//valid image extensions
$pattern="('.jpg$)|('.png$)|('.jpeg$)|('.gif$)";
if($handle = opendir($dirname)) {
while(false !== ($file = readdir($handle))) {
if(eregi($pattern, $file)){
echo 'galleryarray[' . $curimage . '] = "' . $file . '";';
$curimage++;
}
}
closedir($handle);
}
return($files);
}
//Define array in JavaScript returnimages()
//Output the array elements containing the image file names
echo 'var galleryarray = new Array();';
?>
Html代码为：
<html>
<head>
<title></title>
<script src="test.php"></script>
<script type="text/javascript">
var galleryarray = returnimages();
var curimg = 0;
function rotateimages(){
// var imagesDirectory = "pics/" + galleryarray[curimg];
var imagesDirectory =galleryarray[curimg];
document.getElementById("slideshow").setAttribute("src", imagesDirectory)
curimg = (curimg < galleryarray.length - 1) ? curimg + 1 : 0
}
window.onload = function(){
setInterval("rotateimages()", 2500)
}
</script>
</head>
<body>
<img width="468" height="312" id="slideshow" src="Slide1.jpg">
</body>
</html>
您实际上正试图通过javaScript调用php函数returnimages()。无论如何，这是不可能的。