PHP save pictures as pictures of different size pictures class instances, _php tutorial

PHP saves the picture as a picture class instance of a different size picture,

The example in this article describes the picture class that PHP saves to different specifications. Share to everyone for your reference. Specific as follows:

Picture processing class. Imagecls.php as follows:

<?php/** image Processing Class */class imagecls{/** * File information */var $file = array ();  /** * Save Directory */var $dir = ';  /** * ERROR code */var $error _code = 0;  /** * File Upload max KB */var $max _size =-1; function Es_imagecls () {} private Function Checksize ($size) {return! ( $size > $this->max_size) | |  ( -1 = = $this->max_size); /** * Processing uploaded files * @param array $file uploaded files * @param string $dir saved directory * @return BOOL */function init ($file, $d IR = ' temp ') {if (!is_array ($file) | | | empty ($file) | |! $this->isuploadfile ($file [' tmp_name ']) | | trim ($file [' name '] ) == '' ||      $file [' size '] = = 0) {$this->file = array ();      $this->error_code =-1;    return false;      } else {$file [' size '] = intval ($file [' size ']);      $file [' name '] = Trim ($file [' name ']);      $file [' thumb '] = ';      $file [' ext '] = $this->fileext ($file [' name ']);      $file [' name '] = Htmlspecialchars ($file [' name '], ent_quotes); $file [' is_image '] = $this->isimageext ($file[' ext ']);      $file [' file_dir '] = $this->gettargetdir ($dir);      $file [' prefix '] = MD5 (Microtime (TRUE)). Rand (10,99); $file [' target '] = "./public/". $file [' File_dir ']. ' /'. $file [' prefix ']. '. JPG '; Relative $file [' local_target '] = App_root_path. " public/". $file [' File_dir ']. ' /'. $file [' prefix ']. '. JPG ';      Physical $this->file = & $file;      $this->error_code = 0;    return true; }}/** * Save file * @return BOOL * * Function Save () {if (Empty ($this->file) | | empty ($this->file[' Tmp_name    ]) $this->error_code = 101;    ElseIf (! $this->checksize ($this->file[' size ')) $this->error_code =-105;    ElseIf (! $this->file[' is_image ') $this->error_code =-102; ElseIf (! $this->savefile ($this->file[' tmp_name '), $this->file[' Local_target ']) $this->error_code =-    103; ElseIf ($this->file[' is_image ') && (! $this->file[' image_info ') = $this->getimageinfo ($this file[' Local_target ', True))) {     $this->error_code =-104;    @unlink ($this->file[' local_target ');      } else {$this->error_code = 0;    return true;  } return false;  /** * Get error code * @return Number * * Function error () {return $this->error_code; }/** * Gets the file name extension * @return String */function Fileext ($file _name) {return addslashes (Strtolower (substr (STRRCHR  ($file _name, '. '), 1, 10)); /** * Determines whether a file is an image based on an extension * @param string $ext extension * @return bool */function Isimageext ($ext) {static $img _ex    t = array (' jpg ', ' jpeg ', ' PNG ', ' BMP ', ' gif ', ' giff '); Return In_array ($ext, $img _ext)?  1:0; /** * Get image information * @param string $target file path * @return Mixed */function Getimageinfo ($target) {$ext = Es_im    Agecls::fileext ($target);    $is _image = Es_imagecls::isimageext ($ext);    if (! $is _image) return false;    ElseIf (!is_readable ($target)) return false; ElseIf ($image _info = @getimagesize ($target)) {list ($width, $height, $type) =!empty ($image _info)?      $image _info:array (', ', ', ');      $size = $width * $height;      if ($is _image &&!in_array ($type, Array (1,2,3,6,13))) return false;      $image _info[' type '] = Strtolower (substr (Image_type_to_extension ($image _info[2]), 1);    return $image _info;  } else return false; }/** * Gets whether to upload files * @param string $source file path * @return bool */function Isuploadfile ($source) {return $s Ource && ($source! = ' None ') && (Is_uploaded_file ($source) | | is_uploaded_file (str_replace (' \\\\ ', ' \ \ ')  , $source))); /** * Gets the saved path * @param string $dir The specified save directory * @return String */function Gettargetdir ($dir) {if (!is_d IR (app_root_path. " public/". $dir)" {@mkdir (App_root_path. ")       public/". $dir); @chmod (App_root_path. "    public/". $dir, 0777);  } return $dir; }/** * Save file * @param string $source source file path * @param string $target directory file path * @return BOOL */Private function S Avefile ($source,$target) {if (!es_imagecls::isuploadfile ($source)) $succeed = false;    ElseIf (@copy ($source, $target)) $succeed = true;    ElseIf (function_exists (' move_uploaded_file ') && @move_uploaded_file ($source, $target)) $succeed = true;      ElseIf (@is_readable ($source) && (@ $fp _s = fopen ($source, ' RB ')) && (@ $fp _t = fopen ($target, ' WB '))) {        while (!feof ($fp _s)) {$s = @fread ($fp _s, 1024 * 512);      @fwrite ($fp _t, $s);      } fclose ($fp _s);      Fclose ($fp _t);    $succeed = true;      } if ($succeed) {$this->error_code = 0;      @chmod ($target, 0644);    @unlink ($source);    } else {$this->error_code = 0;  } return $succeed;     The Public function thumb ($image, $maxWidth =200, $maxHeight =50, $gen = 0, $interlace =true, $filepath = ", $is _preview = True) {    $info = Es_imagecls::getimageinfo ($image);      if ($info!== false) {$srcWidth = $info [0];      $srcHeight = $info [1]; $type = $info[' type ']; $interlace = $interlace?      1:0;      Unset ($info); if ($maxWidth > 0 && $maxHeight > 0) $scale = min ($maxWidth/$srcWidth, $maxHeight/$srcHeight);      Calculate Scaling elseif ($maxWidth = = 0) $scale = $maxHeight/$srcHeight;      ElseIf ($maxHeight = = 0) $scale = $maxWidth/$srcWidth;      $paths = PathInfo ($image); $paths [' filename '] = Trim (Strtolower ($paths [' basename ']), ".".      Strtolower ($paths [' extension ']);      $basefilename = Explode ("_", $paths [' filename ']);      $basefilename = $basefilename [0]; if (empty ($filepath)) {if ($is _preview) $thumbname = $paths [' dirname ']. ' /'. $basefilename. ' _ '. $maxWidth. ' x '. $maxHeight.        JPG '; else $thumbname = $paths [' dirname ']. ' /'. $basefilename. ' O_ '. $maxWidth. ' x '. $maxHeight.      JPG ';      } else $thumbname = $filepath;      $thumburl = Str_replace (App_root_path, './', $thumbname);    if ($scale >= 1) {//exceeds the original size no longer $width = $srcWidth;    $height = $srcHeight;  if (! $is _preview) {//non-preview mode is written to the original file_put_contents ($thumbname, file_get_contents ($image));        Write a return array with the original image (' url ' = = $thumburl, ' path ' = $thumbname);        }} else {//thumbnail size $width = (int) ($srcWidth * $scale);      $height = (int) ($srcHeight * $scale);        } if ($gen = = 1) {$width = $maxWidth;      $height = $maxHeight; }//Loading the original image $createFun = ' imagecreatefrom '. ($type = = ' jpg '? ')      JPEG ': $type);      if (!function_exists ($createFun)) $createFun = ' imagecreatefromjpeg ';      $SRCIMG = $createFun ($image); Create thumbnails if ($type! = ' gif ' && function_exists (' Imagecreatetruecolor ')) $THUMBIMG = Imagecreatetruecolor ($      width, $height);      else $thumbImg = Imagecreate ($width, $height);      $x = 0;      $y = 0; if ($gen = = 1 && $maxWidth > 0 && $maxHeight > 0) {$resize _ratio = $maxWidth/$maxHeight;        $SRC _ratio = $srcWidth/$srcHeight;          if ($src _ratio >= $resize _ratio) {$x = ($srcWidth-($resize _ratio * $srcHeight))/2;        $width = ($height * $srcWidth)/$srcHeight;          } else {$y = ($srcHeight-((1/$resize _ratio) * $srcWidth))/2;        $height = ($width * $srcHeight)/$srcWidth; }}//Copy Picture if (Function_exists ("imagecopyresampled")) imagecopyresampled ($thumbImg, $srcImg, 0, 0, $      X, $y, $width, $height, $srcWidth, $srcHeight);      else imagecopyresized ($thumbImg, $srcImg, 0, 0, $x, $y, $width, $height, $srcWidth, $srcHeight); if (' gif ' = = $type | | ' png ' = = $type) {$background _color = imagecolorallocate ($thumbImg, 0,255,0);//Assign a green imagecolortransparent ( $THUMBIMG, $background _color); Set to Transparent color, if the line is commented out the output green graph}//JPEG graphics set interlaced if (' jpg ' = = $type | |      ' jpeg ' = = $type) imageinterlace ($THUMBIMG, $interlace); Generate Picture ImageJPeg ($THUMBIMG, $thumbname, 100);      Imagedestroy ($THUMBIMG);      Imagedestroy ($SRCIMG);     Return array (' url ' = = $thumburl, ' path ' = = $thumbname);  } return false; Public Function Make_thumb ($SRCIMG, $srcWidth, $srcHeight, $type, $maxWidth =200, $maxHeight =50, $gen = 0) {$interlace = $interlace?      1:0; if ($maxWidth > 0 && $maxHeight > 0) $scale = min ($maxWidth/$srcWidth, $maxHeight/$srcHeight);      Calculate Scaling elseif ($maxWidth = = 0) $scale = $maxHeight/$srcHeight;      ElseIf ($maxHeight = = 0) $scale = $maxWidth/$srcWidth;        if ($scale >= 1) {//exceeds the original size no longer $width = $srcWidth;      $height = $srcHeight;        } else {//thumbnail size $width = (int) ($srcWidth * $scale);      $height = (int) ($srcHeight * $scale);        } if ($gen = = 1) {$width = $maxWidth;      $height = $maxHeight;      }//Create thumbnails if ($type! = ' gif ' && function_exists (' Imagecreatetruecolor '))  $THUMBIMG = Imagecreatetruecolor ($width, $height);      else $thumbImg = Imagecreatetruecolor ($width, $height);      $x = 0;      $y = 0;         if ($gen = = 1 && $maxWidth > 0 && $maxHeight > 0) {$resize _ratio = $maxWidth/$maxHeight;        $SRC _ratio = $srcWidth/$srcHeight;          if ($src _ratio >= $resize _ratio) {$x = ($srcWidth-($resize _ratio * $srcHeight))/2;        $width = ($height * $srcWidth)/$srcHeight;          } else {$y = ($srcHeight-((1/$resize _ratio) * $srcWidth))/2;        $height = ($width * $srcHeight)/$srcWidth; }}//Copy Picture if (Function_exists ("imagecopyresampled")) imagecopyresampled ($thumbImg, $srcImg, 0, 0, $      X, $y, $width, $height, $srcWidth, $srcHeight);      else imagecopyresized ($thumbImg, $srcImg, 0, 0, $x, $y, $width, $height, $srcWidth, $srcHeight); if (' gif ' = = $type | | ' png ' = = $type) {$background _color = imagecoloralLocate ($THUMBIMG, 255,255,255); Assign a green imagecolortransparent ($THUMBIMG, $background _color); Set to Transparent color, if the line is commented out the output green graph}//JPEG graphics set interlaced if (' jpg ' = = $type | |      ' jpeg ' = = $type) imageinterlace ($THUMBIMG, $interlace);  return $THUMBIMG; The Public function water ($source, $water, $alpha =80, $position = "0") {//check if the file exists if (!file_exists ($source) | |!    File_exists ($water)) return false;    Picture information $sInfo = Es_imagecls::getimageinfo ($source);    $wInfo = Es_imagecls::getimageinfo ($water);    If the picture is less than the watermark picture, do not generate a picture if ($sInfo ["0"] < $wInfo ["0"] | | $sInfo [' 1 '] < $wInfo [' 1 '] return false; if (Is_animated_gif ($source)) {require_once App_root_path. "      System/utils/gif_encoder.php "; Require_once App_root_path. "      System/utils/gif_reader.php ";      $gif = new Gifreader ();      $gif->load ($source);           foreach ($gif->imgs[' frames ') as $k = + $img) {$im = imagecreatefromstring ($gif->getgif ($k)); add watermark to Im $sImage= $im;        $wCreateFun = "Imagecreatefrom". $wInfo [' type '];        if (!function_exists ($wCreateFun)) $wCreateFun = ' imagecreatefromjpeg ';        $wImage = $wCreateFun ($water);           Sets the image's color-blending mode imagealphablending ($wImage, true);          Switch (intval ($position)) {case 0:break;            Upper left Case 1: $posY = 0;            $posX = 0;            Generate mixed Image Imagecopymerge ($sImage, $wImage, $posX, $posY, 0, 0, $wInfo [0], $wInfo [1], $alpha);          Break            Upper right Case 2: $posY = 0;            $posX = $sInfo [0]-$wInfo [0];            Generate mixed Image Imagecopymerge ($sImage, $wImage, $posX, $posY, 0, 0, $wInfo [0], $wInfo [1], $alpha);          Break            Lower left case 3: $posY = $sInfo [1]-$wInfo [1];            $posX = 0;            Generate mixed Image Imagecopymerge ($sImage, $wImage, $posX, $posY, 0, 0, $wInfo [0], $wInfo [1], $alpha);          Break           Lower right Case 4: $posY = $sInfo [1]-$wInfo [1];            $posX = $sInfo [0]-$wInfo [0];            Generate mixed Image Imagecopymerge ($sImage, $wImage, $posX, $posY, 0, 0, $wInfo [0], $wInfo [1], $alpha);          Break            Center Case 5: $posY = $sInfo [1]/2-$wInfo [1]/2;            $posX = $sInfo [0]/2-$wInfo [0]/2;            Generate mixed Image Imagecopymerge ($sImage, $wImage, $posX, $posY, 0, 0, $wInfo [0], $wInfo [1], $alpha);        Break        }//end im plus watermark ob_start ();        Imagegif ($sImage);        $content = Ob_get_contents ();        Ob_end_clean ();        $frames [] = $content;      $framed [] = $img [' Framedelay '];          } $gif _maker = new Gifencoder ($frames, $framed, 0, 2, 0, 0, 0,      "Bin"//bin is the binary URL for the address);      $image _rs = $gif _maker->getanimation ();      If you do not give a save file name, the default is the original image name @unlink ($source);      Save Image File_put_contents ($source, $image _rs);    return true; }//Build image   $sCreateFun = "Imagecreatefrom". $sInfo [' type '];    if (!function_exists ($sCreateFun)) $sCreateFun = ' imagecreatefromjpeg ';    $sImage = $sCreateFun ($source);    $wCreateFun = "Imagecreatefrom". $wInfo [' type '];    if (!function_exists ($wCreateFun)) $wCreateFun = ' imagecreatefromjpeg ';    $wImage = $wCreateFun ($water);    Sets the image's color-blending mode imagealphablending ($wImage, true);      Switch (intval ($position)) {case 0:break;        Upper left Case 1: $posY = 0;        $posX = 0;        Generate mixed Image Imagecopymerge ($sImage, $wImage, $posX, $posY, 0, 0, $wInfo [0], $wInfo [1], $alpha);      Break        Upper right Case 2: $posY = 0;        $posX = $sInfo [0]-$wInfo [0];        Generate mixed Image Imagecopymerge ($sImage, $wImage, $posX, $posY, 0, 0, $wInfo [0], $wInfo [1], $alpha);      Break        Lower left case 3: $posY = $sInfo [1]-$wInfo [1];        $posX = 0;        Generate mixed Image Imagecopymerge ($sImage, $wImage, $posX, $posY, 0, 0, $wInfo [0], $wInfo [1], $alpha);      Break    Lower right  Case 4: $posY = $sInfo [1]-$wInfo [1];        $posX = $sInfo [0]-$wInfo [0];        Generate mixed Image Imagecopymerge ($sImage, $wImage, $posX, $posY, 0, 0, $wInfo [0], $wInfo [1], $alpha);      Break        Center Case 5: $posY = $sInfo [1]/2-$wInfo [1]/2;        $posX = $sInfo [0]/2-$wInfo [0]/2;        Generate mixed Image Imagecopymerge ($sImage, $wImage, $posX, $posY, 0, 0, $wInfo [0], $wInfo [1], $alpha);    Break    }//If the save file name is not given, the default is the original image name @unlink ($source);    Save Image imagejpeg ($sImage, $source, 100);  Imagedestroy ($sImage); }}if (!function_exists (' image_type_to_extension ')) {function image_type_to_extension ($imagetype) {if (Empty ($    ImageType)) return false;      Switch ($imagetype) {case Imagetype_gif:return '. GIF ';      Case Imagetype_jpeg:return '. JPEG ';      Case Imagetype_png:return '. PNG ';      Case Imagetype_swf:return '. SWF ';      Case Imagetype_psd:return '. PSD ';      Case Imagetype_bmp:return '. BMP '; Case Imagetype_tiff_ii:return'. Tiff ';      Case Imagetype_tiff_mm:return '. TIFF ';      Case Imagetype_jpc:return '. JPC ';      Case Imagetype_jp2:return '. JP2 ';      Case Imagetype_jpx:return '. JPF ';      Case Imagetype_jb2:return '. Jb2 ';      Case Imagetype_swc:return '. SWC ';      Case Imagetype_iff:return '. Aiff ';      Case Imagetype_wbmp:return '. WBMP ';      Case Imagetype_xbm:return '. XBM ';    Default:return false; }}}?>

2.get_spec_img () calls the picture class, and then saves the picture with different specifications and returns the picture connection

Get the picture address of the corresponding specification//gen=0: maintain scale, do not trim, such as height of 0, the width is guaranteed to scale gen=1: guaranteed length width, clipping function get_spec_image ($img _path, $width =0, $height =   0, $gen =0, $is _preview=true) {if ($width ==0) $new _path = $img _path;     else {$img _name = substr ($img _path,0,-4);       $img _ext = substr ($img _path,-3); if ($is _preview) $new _path = $img _name. " _ ". $width." X ". $height.".       JPG "; else $new _path = $img _name. " O_ ". $width." X ". $height.".      JPG ";       if (!file_exists ($new _path)) {require_once "imagecls.php";       $IMAGEC = new Imagecls ();       $thumb = $imagec->thumb ($img _path, $width, $height, $gen, True, "", $is _preview);         if (app_conf ("public_domain_root") = ") {$paths = PathInfo ($new _path);         $path = Str_replace ("./", "", $paths [' dirname ']);         $filename = $paths [' basename '];             $pathwithoupublic = Str_replace ("public/", "", $path);             $file _data = @file_get_contents ($path. $file);             $img = @imagecreatefromstring ($file _data); if ($img!==false) {$save _path = "public/". $path;                     if (!is_dir ($save _path)) {@mk_dir ($save _path);             } @file_put_contents ($save _path. $name, $file _data); }}}} return $new _path; }

3. How to use:

Im: Save the store image in 3 sizes: Small picture: 48x48, 120x120, big picture 200x200$small_url=get_spec_image ($data [' Image '],48,48,0); $Middle_ URL=get_spec_image ($data [' Image '],120,120,0); $big _url=get_spec_image ($data [' Image '],200,200,0);

I hope this article is helpful to everyone's PHP programming.

http://www.bkjia.com/PHPjc/976021.html www.bkjia.com true http://www.bkjia.com/PHPjc/976021.html techarticle PHP Save the picture as a picture of different dimensions of the class instance, the example of this article tells PHP to save the picture as different specifications of the picture class. Share to everyone for your reference. Specific as follows: Figure ...

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