Php 通过ajax上载文件,但返回未定义的索引
当我将文件上传到Ajax时,它可以工作,但当文件传回PHP时,它显示未定义索引Php 通过ajax上载文件,但返回未定义的索引,php,ajax,Php,Ajax,当我将文件上传到Ajax时,它可以工作,但当文件传回PHP时,它显示未定义索引 <html> <textarea name="recipe_preparation[]"></textarea><input type="file" name="preparation_photo[]" /> <textarea name="recipe_preparation[]"></textarea><input type="
<html>
<textarea name="recipe_preparation[]"></textarea><input type="file" name="preparation_photo[]" />
<textarea name="recipe_preparation[]"></textarea><input type="file" name="preparation_photo[]" />
</html>
这是关于我提交文件的java脚本
<script>
var len=$("[name='preparation_photo[]']").length;
for ( var i=0; i < len; i++ )
{
formdata.append("file", document.getElementsByName("preparation_photo[]")[i].file);
}
$.ajax({
type : "POST",
url : "add.php",
data : formdata,
processData: false,
contentType: false,
success : function(data){
alert(data);
}
});
<script>
<?php
$target_path = "img/";
for($i=0; $i<count($_FILES['file']['name']); $i++){
$ext = explode('.', basename( $_FILES['file']['name'][$i]));
$target_path = $target_path . md5(uniqid()) . "." . $ext[count($ext)-1];
if(move_uploaded_file($_FILES['file']['tmp_name'][$i], $target_path)) {
echo "The file has been uploaded successfully <br />";
} else{
echo "There was an error uploading the file, please try again! <br />";
?>
var len=$(“[name='preparation_photo[]']”)长度;
对于(变量i=0;i
使用混合变量名
在HTML中有name=“preparation\u photo[]”
在PHP
$\u文件['file']
切换到
$\u FILES['preparation\u photo']
它仍然是一样的。我可以提醒get object元素,但不知道为什么仍然没有定义索引