上传文件大小限制PHP(代码点火器)

Question

我在验证在编码点火器中上传文件的文件大小限制时遇到了一些问题。

这是我的代码

public function upload_docu_by_type() {
ini_set('max_execution_time', 300);
$this->load->helper(array('form', 'url'));
$F = array();
$prop_id = sanitize($this->input->post('prop_id'));
$file = sanitize($this->input->post('file'));
$config = array();
$config['upload_path'] = './/assets//img//documents//';
$config['allowed_types'] = 'jpeg|jpg|png|pdf';
$config['max_size']      = '5000';
$config['overwrite']     = TRUE;
$this->load->library('upload');
$files = $_FILES;
for($i=0; $i< count($files['images']['name']); $i++) {   
$config['file_name']     = $prop_id."_".$file."_".$i;        
// $_FILES['images']['name']= time()."_".$files['images']['name'][$i];
$_FILES['images']['name']= time()."_".preg_replace('/[()]/','',$files['images']['name'][$i]);
// $_FILES['images']['name']= $prop_id."_".$file;
$_FILES['images']['type']= $files['images']['type'][$i];
$_FILES['images']['tmp_name']= $files['images']['tmp_name'][$i];
$_FILES['images']['error']= $files['images']['error'][$i];
$_FILES['images']['size']= $files['images']['size'][$i];    
$this->upload->initialize($config);
if (! $this->upload->do_upload('images')){ //if not 
$errors = array('error' => $this->upload->display_errors());
$data = array('success' => 0, 'errors' => $errors);
}
else if($_FILES['images']['size'] >= 5000){
$data = array("success" => "1", 'message' => "You've reached the limit");   
}else{
$upload_data = $this->upload->data();
$file_name =  $upload_data['file_name']; 
$file_type =  $upload_data['file_type']; //this will be the name of your file
$img = array('uploader_file' => $file_name); 
$this->Applicant_model_w->upload_docu_by_type($prop_id,$file_name,$file_type,$file);
$data = array("success" => "1", 'message' => "Successfully uploaded file/s.");
}
}
generate_json($data);
}

我试过了

else if($_FILES['images']['size'] >= 5000){
$data = array("success" => "1", 'message' => "You've reached the limit");
}  

但它不起作用。我只是Codeigniter的新手。

验证文件大小限制的正确方法是什么？ 我正在使用代码点火器

Answer 1

您可以在图片上传中添加尺寸限制，包括高度和宽度，如下所示

$image_info = getimagesize($_FILES["images"]["tmp_name"]);
$image_width = $image_info[0];
$image_height = $image_info[1];
if ($image_width >= 1900 && $image_height >= 600)
{
$this->upload->initialize($config);
if (! $this->upload->do_upload('images')){ //if not 
$errors = array('error' => $this->upload->display_errors());
$data = array('success' => 0, 'errors' => $errors);
}
}

如果您只想按大小限制

if ($image_info >= 5000)
{
$this->upload->initialize($config);
if (! $this->upload->do_upload('images')){ //if not 
$errors = array('error' => $this->upload->display_errors());
$data = array('success' => 0, 'errors' => $errors);
}
}

Answer 2

以下是CodeIgniter代码的工作原理：

<?php
$config['upload_path'] = $this->path . "images/";
$config['allowed_types'] = 'gif|jpg|jpeg|png|GIF|JPG|JPEG|PNG';
$config['max_size'] = 0; //3 * 1024 * 1024; //3Mb; 0=unlimited
$config['max_width']  = 0;//"3850"; //'1024';
$config['max_height']  = 0;//"2180"; //'768';
$config['max_filename'] = 30; //0=no limit in length or size
$config['encrypt_name'] = TRUE; //TRUE=means file name will be converted to a random encrypted string
$config['remove_spaces'] = TRUE; //TRUE=means  spaces in the file name will be converted to underscores
$this->load->library('upload', $config);
if(!$this->upload->do_upload("img")){
$error = array('error' => $this->upload->display_errors());
echo json_encode(array('status'=>'error', 'message'=>$error));
}else{
$data = array('upload_data' => $this->upload->data());
echo json_encode(array(
"status" => "success",
"url" => $this->path . "images/" . $data["upload_data"]["file_name"],
"width" => $data["upload_data"]["image_width"],
"height" => $data["upload_data"]["image_height"],
"data" => $data["upload_data"],
"message" => 'You have successfully uploaded the image.'
));
}
?>