The example in this article describes the PHP image upload class and usage. Share it with everyone for your reference, the details are as follows:
1. The class file name is: upclass.php
set_datatime(); } function set_datatime(){ $this->datetime=date("YmdHis"); } //获取文件类型 function get_ph_type($phtype){ $this->ph_type=$phtype; } //获取文件大小 function get_ph_size($phsize){ $this->ph_size=$phsize."<br>"; } //获取上传临时文件名 function get_ph_tmpname($tmp_name){ $this->ph_tmp_name=$tmp_name; $this->imgsize=getimagesize($tmp_name); } //获取原文件名 function get_ph_name($phname){ $this->ph_name=$this->ph_path.$this->datetime.strrchr($phname,"."); //strrchr获取文件的点最后一次出现的位置 //$this->ph_name=$this->datetime.strrchr($phname,"."); //strrchr获取文件的点最后一次出现的位置 return $this->ph_name; } // 判断上传文件存放目录 function check_path(){ if(!file_exists($this->ph_path)){ mkdir($this->ph_path); } } //判断上传文件是否超过允许大小 function check_size(){ if($this->ph_size>$this->al_ph_size){ $this->showerror("上传图片超过2000KB"); } } //判断文件类型 function check_type(){ if(!in_array($this->ph_type,$this->al_ph_type)){ $this->showerror("上传图片类型错误"); } } //上传图片 function up_photo(){ if(!move_uploaded_file($this->ph_tmp_name,$this->ph_name)){ $this->showerror("上传文件出错"); } } //图片预览 function showphoto(){ if($this->preview==1){ if($this->imgsize[0]>2000){ $this->imgsize[0]=$this->imgsize[0]*$this->previewsize; $this->imgsize[1]=$this->imgsize[1]*$this->previewsize; } echo("<img src="%5C%22%7B%24this-" alt="PHP upload image class and usage examples" >ph_name}\" width=\"{$this->imgsize['0']}\" height=\"{$this->imgsize['1']}\">"); } } //错误提示 function showerror($errorstr){ echo "<script language="javascript">alert('$errorstr');location='javascript:history.go(-1)';</script>"; exit(); } function save(){ $this->check_path(); $this->check_size(); $this->check_type(); $this->up_photo(); $this->showphoto(); } } ?>
2.html page:
3. The file name of the calling class is: upphoto.php
get_ph_tmpname($_FILES['photo']['tmp_name']); $up->get_ph_type($_FILES['photo']['type']); $up->get_ph_size($_FILES['photo']['size']); $up->get_ph_name($_FILES['photo']['name']); $up->save(); } ?> get_ph_name($_FILES['photo']['name']); echo "<img src="%24images" alt="PHP upload image class and usage examples" >"; ?>
Readers who are interested in more PHP-related content can check out the special topics of this site: "Summary of PHP File Operations", "Summary of PHP Operations and Operator Usage", "Summary of PHP Network Programming Skills", "Introduction to PHP Basic Syntax" Tutorial", "Summary of PHP operating office document skills (including word, excel, access, ppt)", "Summary of PHP date and time usage", "Introduction to PHP object-oriented programming tutorial", "Summary of PHP string (string) usage ", "Introduction Tutorial on PHP+MySQL Database Operation" and "Summary of Common PHP Database Operation Skills"
I hope this article will be helpful to everyone in PHP programming.
The above introduces the PHP image upload class and usage examples, including uploading images and PHP content. I hope it will be helpful to friends who are interested in PHP tutorials.

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