我有一个要在 CodeIgniter 中开发的网站,我想用 AJAX 上传一张图片并使其可调整大小。我可以上传和显示图像,但无法调整大小。
这是我的上传脚本:
public function ajaximage(){
$path = "uploads/tee/element/";
$session_id = $this->session->userdata('id');
$valid_formats = array("jpg", "png", "gif", "bmp","jpeg");
if(isset($_POST) and $_SERVER['REQUEST_METHOD'] == "POST")
{
$name = $_FILES['upload']['name'];
$size = $_FILES['upload']['size'];
if(strlen($name))
{
list($txt, $ext) = explode(".", $name);
if(in_array($ext,$valid_formats))
{
if($size<(1024*1024)) // Image size max 1 MB
{
$actual_image_name = time().$session_id.".".$ext;
$tmp = $_FILES['upload']['tmp_name'];
if(move_uploaded_file($tmp, $path.$actual_image_name))
{
echo "<img src='".base_url().$path.$actual_image_name."' class='resizable' width='200px' height='100px'>";
}
else
echo "failed";
}
else
echo "Image file size max 1 MB";
}
else
echo "Invalid file format..";
}
else
echo "Please select image..!";
exit;
}
}
这是我处理请求的 AJAX 函数。我必须将图像放在 adiv
中,并且图像必须可调整大小:
<script>
$(document).ready(function(){
$(".resizable").resizable();
function showResponse(responseText){
$(responseText).appendTo("#space-drawable-div").resizable();
$(responseText).css('position','absolute').css('top','0px').css('left','0px').css('z-index','5');
}
$('#upload-form').ajaxForm(showResponse);
});
</script>
图像已显示,但我无法调整它的大小。
控制台中没有显示错误。