我在表images
中有一些图片,字段为id
,name
和photo
。图像存在于photo
。
此时,下面的代码没有得到任何图像,尽管应该有大约4个图像与查询匹配。符合查询的图像应该进入slideshowimages("")
变量。
<?php
// Connect to the database
require('mysqli.php');
// Query for a list of all existing files
$sql = "SELECT * FROM images WHERE name= '$pagetitle'";
$result = $conn->query($sql);
$directory = '';
while( $image = $result->fetch_assoc() )
$directory .= ($directory != '' ? "," : '') . ('"/images/'.$image["photo"] . '"');
// Check if it was successfull
if($image) {
// if there are images for this page, run the javascript
?><script>
//configure the paths of the images, plus corresponding target links
//NEED TO GET ALL RELEVANT IMAGE LOCATIONS INTO LINE BELOW
slideshowimages("<?php echo $directory ?>")
//configure the speed of the slideshow, in miliseconds
var slideshowspeed=2000
var whichlink=0
var whichimage=0
function slideit(){
if (!document.images)
return
document.images.slide.src=slideimages[whichimage].src
whichlink=whichimage
if (whichimage<slideimages.length-1)
whichimage++
else
whichimage=0
setTimeout("slideit()",slideshowspeed)
}
slideit()
</script> <?php
} else {
// If there are not any images for this page, leave the space blank
echo "";
}
// Close the mysql connection
$conn->close();
?>
head
<script language="JavaScript1.1">
var slideimages=new Array()
var slidelinks=new Array()
function slideshowimages(){
for (i=0;i<slideshowimages.arguments.length;i++){
slideimages[i]=new Image()
slideimages[i].src=slideshowimages.arguments[i]
}
}
</script>
答案 0 :(得分:1)
简单易用的方法是使用AJAX调用,将您的图片网址放在JSON数组中,您可以将其解析为javascript数组,然后迭代等等。在这种情况下,额外的好处是你可以按语言将你的代码分成不同的文件,这样可以提供更好的代码。
但是在你当前的代码中,你必须通过一个简单的循环迭代你的mysqli结果。例如:
//...
// Query for a list of all existing files
$sql = "SELECT * FROM images WHERE name= '$pagetitle'";
$result = $conn->query($sql);
$directory = '';
while( $image = $result->fetch_assoc() )
$directory .= ($directory != '' ? ',' : '') . ("'/images/".$image['photo'] . "'");
//...
在这种情况下,您的$directory
变量就像这样:
'/images/image1.jpg','/images/image2.jpg','/images/image3.jpg'
并且您希望可以将其作为参数列表传递给javascript函数。
我希望我能提供帮助。