What are the PHP forms and thumbnail processing classes?

<?php
Encapsulates a form validation class
Chinese verification, email verification, phone number, mobile phone, QQ, ID card, (composed of letters, numbers, underscores, cannot start with a number)
Header (' Content-type:text/html;charset=utf-8 ');
Class form{
/*
Methods of Chinese verification
Parameters: $str, $num 1, $num 2
Return value: The number of matches that matched successfully returned
*/
Public Function Checkchina ($STR, $num 1, $num 2 = ") {
Regular
$reg = '/^[\x{4e00}-\x{9fa5}]{'. $num 1. ', '. $num 2. '} '. ' $/u ';
Return Preg_match ($reg, $STR);
}
/*
Mailbox Verification
Parameters: $email
Return value: The number of matches that matched successfully returned
*/
Public Function Checkemail ($email) {
Regular
$reg = '/^\[email protected]\w+[.] com|cn|net$/';
Return Preg_match ($reg, $email);
}
/*
Verify ID
Parameter $card
Return value: The number of matches that matched successfully returned
*/
Public Function Checkcard ($card) {
Regular
$reg = '/^ (\d{18}|\d{17}x) $/';
Return Preg_match ($reg, $card);
}
/*
Required input content consists of numbers, letters, underscores, cannot start with a number, there is a limit to the number of digits
Parameters: $str, $num 1, $num 2
Return value: The number of matches that matched successfully returned
*/
Public Function Checkstr ($STR, $num 1, $num 2) {
Regular
$reg = '/^[a-za-z_]\w{'. ( $num 1-1). ', '. ($num 2-1). '} $/';
Return Preg_match ($reg, $STR);
}
}

<?php
Picture processing Tool Class
Class image{
Property
Private $thumb _width; The width of the thumbnail image
Private $thumb _height;
Error properties
Public $thumb _error;
Construction method
Public function __construct ($width = 0, $height = 0) {
$this->thumb_width = ($width = = 0)? $GLOBALS [' config '] [' admin_goods_thumb '] [' width ']: $width;
$this->thumb_height = ($height = = 0)? $GLOBALS [' config '] [' admin_goods_thumb '] [' height ']: $height;
}
/*
* Make thumbnail images
* @param1 string $src, original path,/uploads/20150122101010abcdef.gif
* @param2 string $path, thumbnail save path/uploads/thumb_20150122101010abcdef.gif
* @return The name of the thumbnail image
*/
Public Function Makethumb ($SRC, $path) {
Determine if the original image exists
if (!file_exists ($SRC)) {
$this->thumb_error = ' artwork does not exist! ‘;
return false;
}
Open Original source
Get the suffix you can use
$ext = $this->getfunctionname ($SRC); Gif
Piece of patchwork function name
$open = ' Imagecreatefrom '. $ext; Imagecreatefromgif
$save = ' image '. $ext; Imagegif
If not clear; Echo $open, $save; exit;
Variable function Open Original source
$src _img = $open ($SRC); Open a picture resource with a mutable function
Imagecreatefromgif ($SRC)
Thumbnail resources
$DST _img = Imagecreatetruecolor ($this->thumb_width, $this->thumb_height);
White background filled with color
$DST _bg_color = imagecolorallocate ($dst _img,255,255,255);
Imagefill ($dst _img,0,0, $dst _bg_color);
Width-to-height ratio determination of wide height
$DST _size = $this->thumb_width/$this->thumb_height;
Get the original data
$file _info = getimagesize ($SRC);
$src _size = $file _info[0]/$file _info[1];
Find the thumbnail width and height
if ($src _size > $dst _size) {
The original aspect ratio is greater than the thumbnail image
$width = $this->thumb_width;
$height = Round ($width/$src _size);
}else{
$height = $this->thumb_height;
$width = Round ($height * $src _size);
}
Find the starting position of the thumbnail image
$DST _x = round ($this->thumb_width-$width)/2;
$DST _y = round ($this->thumb_height-$height)/2;
Make thumbnail images
if (imagecopyresampled ($dst _img, $src _img, $dst _x, $dst _y,0,0, $width, $height, $file _info[0], $file _info[1])) {
Sample successful: Save, save the file to the corresponding path
$thumb _name = ' thumb_ '. BaseName ($SRC);
$save ($dst _img, $path. ‘/‘ . $thumb _name);
Saved successfully
return $thumb _name;
}else{
Sampling failed
$this->thumb_error = ' thumbnail sampling failed! ‘;
return false;
}
}
/*
* Get the name of the function to be called by the file
* @param1 string $file, file name
* @return The function string obtained by the file suffix name
*/
Private Function Getfunctionname ($file) {
Get the suffix of the file
$file _info = PathInfo ($file);
$ext = $file _info[' extension '); Suffix: gif,png,jpg,jpeg,pjpeg
Imagecreatefromgif,imagecreatefromjpeg,imagecreatefrompng
Defines an array of Save function names
$func = Array (
' gif ' = ' gif ',
' png ' = ' png ',
' jpg ' = ' jpeg ',
' JPEG ' = ' jpeg ',
' Pjpeg ' = ' jpeg '
);
return value
return $func [$ext];
}
}

What are the PHP forms and thumbnail processing classes?