下面的脚本处理表单数据。我有两个sql语句，一个在私有php类CropAvatar之外，它将文本字段数据插入到sql中，另一个在CropAvatas类中，它将两个文件URL插入到sql。我希望第二条sql语句在上一条sql语句插入的最后一行中输入文件URL。我目前正在通过定义该id
$id = mysqli_insert_id();
但是，如果我在第二条sql语句中添加'WHERE id=$id'，它就不起作用了，那条语句就看不到id的值。我相信这可能是因为第一条语句在私有类CropAvatar之外，第二条语句在类内部。如何将$id传递到私人类中以使其工作？
<?php
$title = $_POST['title'];
$address = $_POST['address'];
$sale_price = $_POST['sale_price'];
$lease_price = $_POST['lease_price'];
$build_size = $_POST['build_size'];
$lot_size = $_POST['lot_size'];
$zoning = $_POST['zoning'];
$comment = $_POST['comment'];
$transaction = $_POST['transaction'];
require('../dbcon.php');
$sql="INSERT INTO listings (title, address, lot_size, zoning, build_size, sale_price, lease_price, comment,transaction, date_added) VALUES ('$title', '$address', '$lot_size', '$zoning', '$build_size', '$sale_price', '$lease_price', '$comment', '$transaction', now())";
mysqli_query($con,$sql);
$id = mysqli_insert_id();
class CropAvatar {
private $src;
private $data;
private $file;
private $dst;
private $type;
private $extension;
private $srcDir = '../0images/listimg/orig';
private $dstDir = '../0images/listimg/mod';
private $msg;
function __construct($src, $data, $file, $insert_id) {
$this -> setSrc($src);
$this -> setInsertId($insert_id);
$this -> setData($data);
$this -> setFile($file);
$this -> crop($this -> src, $this -> dst, $this -> data);
}
private $insert_id;
public function setInsertId($insert_id) {
$this->insert_id = $insert_id;
}
private function setSrc($src) {
if (!empty($src)) {
$type = exif_imagetype($src);
if ($type) {
$this -> src = $src;
$this -> type = $type;
$this -> extension = image_type_to_extension($type);
$this -> setDst();
}
}
}
private function setData($data) {
if (!empty($data)) {
$this -> data = json_decode(stripslashes($data));
}
}
private function setFile($file) {
$errorCode = $file['error'];
if ($errorCode === UPLOAD_ERR_OK) {
$type = exif_imagetype($file['tmp_name']);
if ($type) {
$dir = $this -> srcDir;
if (!file_exists($dir)) {
mkdir($dir, 0777);
}
$currdate=date('YmdHis');
$extension = image_type_to_extension($type);
$src = $dir . '/' . $currdate . $extension;
if ($type == IMAGETYPE_GIF || $type == IMAGETYPE_JPEG || $type == IMAGETYPE_PNG) {
if (file_exists($src)) {
unlink($src);
}
$result = move_uploaded_file($file['tmp_name'], $src);
$listing_img="http://www.website.com/0images/listimg/mod/" . $currdate . $extension;
$allowedExtsf = array("pdf");
$tempf = explode(".", $_FILES["flyer"]["name"]);
$extensionf = end($tempf);
if (($_FILES["flyer"]["type"] == "application/pdf")
&& ($_FILES["flyer"]["type"] <2000000000)
&& in_array($extensionf, $allowedExtsf))
{
$flyername=$_FILES["flyer"]["name"];
if ($_FILES["flyer"]["error"] > 0)
{
echo "Return Code: " . $_FILES["flyer"]["error"] . "<br>";
}
else
{
if (file_exists("../flyers/" . $_FILES["flyer"]["name"]))
{
echo $_FILES["flyer"]["name"] . " already exists. ";
}
else
{
move_uploaded_file($_FILES["flyer"]["tmp_name"],"../flyers/" . $_FILES["flyer"]["name"]);
}
}
$ad_link="http://www.website.com/flyers/" . $_FILES["flyer"]["name"];
require('../dbcon.php');
$sql="UPDATE listings SET ad_link='$ad_link', listing_img='$listing_img' WHERE id=$this->insert_id";
mysqli_query($con,$sql);
mysqli_close($con);
}
if ($result) {
$this -> src = $src;
$this -> type = $type;
$this -> extension = $extension;
$this -> setDst();
} else {
$this -> msg = 'Failed to save file';
}
} else {
$this -> msg = 'Please upload image with the following types: JPG, PNG, GIF';
}
} else {
$this -> msg = 'Please upload image file';
}
} else {
$this -> msg = $this -> codeToMessage($errorCode);
}
}
private function setDst() {
$dir = $this -> dstDir;
if (!file_exists($dir)) {
mkdir($dir, 0777);
}
$this -> dst = $dir . '/' . date('YmdHis') . $this -> extension;
}
private function crop($src, $dst, $data) {
if (!empty($src) && !empty($dst) && !empty($data)) {
switch ($this -> type) {
case IMAGETYPE_GIF:
$src_img = imagecreatefromgif($src);
break;
case IMAGETYPE_JPEG:
$src_img = imagecreatefromjpeg($src);
break;
case IMAGETYPE_PNG:
$src_img = imagecreatefrompng($src);
break;
}
if (!$src_img) {
$this -> msg = "Failed to read the image file";
return;
}
$dst_img = imagecreatetruecolor(220, 220);
$result = imagecopyresampled($dst_img, $src_img, 0, 0, $data -> x, $data -> y, 220, 220, $data -> width, $data -> height);
if ($result) {
switch ($this -> type) {
case IMAGETYPE_GIF:
$result = imagegif($dst_img, $dst);
break;
case IMAGETYPE_JPEG:
$result = imagejpeg($dst_img, $dst);
break;
case IMAGETYPE_PNG:
$result = imagepng($dst_img, $dst);
break;
}
if (!$result) {
$this -> msg = "Failed to save the cropped image file";
}
} else {
$this -> msg = "Failed to crop the image file";
}
imagedestroy($src_img);
imagedestroy($dst_img);
}
}
private function codeToMessage($code) {
switch ($code) {
case UPLOAD_ERR_INI_SIZE:
$message = 'The uploaded file exceeds the upload_max_filesize directive in php.ini';
break;
case UPLOAD_ERR_FORM_SIZE:
$message = 'The uploaded file exceeds the MAX_FILE_SIZE directive that was specified in the HTML form';
break;
case UPLOAD_ERR_PARTIAL:
$message = 'The uploaded file was only partially uploaded';
break;
case UPLOAD_ERR_NO_FILE:
$message = 'No file was uploaded';
break;
case UPLOAD_ERR_NO_TMP_DIR:
$message = 'Missing a temporary folder';
break;
case UPLOAD_ERR_CANT_WRITE:
$message = 'Failed to write file to disk';
break;
case UPLOAD_ERR_EXTENSION:
$message = 'File upload stopped by extension';
break;
default:
$message = 'Unknown upload error';
}
return $message;
}
public function getResult() {
return !empty($this -> data) ? $this -> dst : $this -> src;
}
public function getMsg() {
return $this -> msg;
}
}
$crop = new CropAvatar($_POST['avatar_src'], $_POST['avatar_data'], $_FILES['avatar_file'], $id);
$response = array(
'state' => 200,
'message' => $crop -> getMsg(),
'result' => $crop -> getResult()
);
echo json_encode($response);
?>
只需将其添加到__construct方法参数中：
function __construct($src, $data, $file, $insert_id) {
$this -> setSrc($src);
$this -> setInsertId($insert_id);
$this -> setData($data);
$this -> setFile($file);
$this -> crop($this -> src, $this -> dst, $this -> data);
}
因此，在创建CropAvatar对象时需要传递它：
$crop = new CropAvatar($_POST['avatar_src'], $_POST['avatar_data'], $_FILES['avatar_file'], $id);
您还需要在CropAvatar类中定义局部变量和setter：
private $insert_id;
public function setInsertId($insert_id) {
$this->insert_id = $insert_id;
}
然后您可以在任何需要的地方将其称为$this->insert_id。
如果你想在类中使用$id，只需要在你的构造中添加：
private $id;
function __construct($src, $data, $file, $id){
$this->id = $id;
}
并像往常一样使用它：
$crop = new CropAvatar($_POST['avatar_src'], $_POST['avatar_data'], $_FILES['avatar_file'], $id);