我必须更新由多个文件输入类型字段组成的数据库。所有输入字段的名称都相同。
<input type="text" name="title[]">
<input type="file" name="image[]">
<input type="text" name="title[]">
<input type="file" name="image[]">
<input type="text" name="title[]">
<input type="file" name="image[]">
现在,不是强制要求选择所有图像,可能会更改所有标题,但仅选择第三张图像。现在我想仅在选择图像时才上传文件,否则会逃避上传。
这是操作页面:
<?php
$title = $_POST['title'];
$upload = 0;
for($i=0; $i<sizeof($title); $i++)
{
if(!empty($_FILES['image'][$i]))
{
// upload file and set flag upload=1
} else {
// set flag upload=0
}
if($upload == 1)
{
$qry = "UPDATE <table_name> SET title='$title[$i]', image='$image' WHERE <match found>";
// execute $qry
} else {
$qry = "UPDATE <table_name> SET title='$title[$i]' WHERE <match found>";
// execute $qry
}
}
但是每次只有else
语句在选择图像时运行事件,甚至在未选择图像时也是如此。
更新 2 :
print_r($_FILES);
结果
Array
(
[image] => Array
(
[name] => Array
(
[0] =>
[1] => Selection_238.png
[2] =>
)
[type] => Array
(
[0] =>
[1] => image/png
[2] =>
)
[tmp_name] => Array
(
[0] =>
[1] => /tmp/phpqSB0Jn
[2] =>
)
[error] => Array
(
[0] => 4
[1] => 0
[2] => 4
)
[size] => Array
(
[0] => 0
[1] => 72259
[2] => 0
)
)
)
第二个输入字段中的选定图像
首先,
您需要在代码if($upload = 1)
中将=
更改为==
,因为=
是运算符assignment
而不是运算符comparison
。
检查一下,可能是您的问题解决了。否则请检查以下可能的解决方案
1.
<?php
$title = $_POST['title'];
for($i=0; $i<sizeof($title); $i++)
{
if(!empty($_FILES['image']['name'][$i]))
{
// check if file uploaded then run below query
$qry = "UPDATE <table_name> SET title='$title[$i]', image='$image' WHERE <match found>"; // you can apply if else here based on move_uploaded_file output
} else {
// set flag upload=0
$qry = "UPDATE <table_name> SET title='$title[$i]' WHERE <match found>";
}
}
?>
阿拉伯数字。
<?php
$title = $_POST['title'];
$upload = 0; // define here
for($i=0; $i<sizeof($title); $i++)
{
if(!empty($_FILES['image']['name'][$i]))
{
// upload file and set flag $upload = 1
} else {
// set flag $upload = 0
}
if($upload == 1) // you need to change = (assignment) to == (comparision)
{
$qry = "UPDATE <table_name> SET title='$title[$i]', image='$image' WHERE <match found>";
// execute $qry
} else {
$qry = "UPDATE <table_name> SET title='$title[$i]' WHERE <match found>";
// execute $qry
}
}
?>