PHP methods for manipulating picture properties

This article mainly introduces PHP for image properties of the method of operation, interested in the friend's reference, I hope to be helpful to everyone.

This article describes the PHP batch generation image thumbnail method, as follows:

<?php//Batch generated image thumbnail function mkdirs ($dirname, $mode =0777)//Create directory (directory, [mode]) {if (!is_dir ($dirname)) {mkdirs ($dirnam E, $mode);  If the directory does not exist, recursively establish return mkdir ($dirname, $mode); } return true; } function SaveFile ($filename, $content = ")//Save file (file, [content]) {if (function_exists (file_put_contents)) {File_put_conten  TS ($filename, $content);   } else {$fp =fopen ($filename, "WB");   Fwrite ($fp, $content);  Fclose ($FP);  }} function Getsuffix ($filename)//Gets the file name suffix {return end (Explode (".", $filename)),} function Checksuffix ($filename, $arr)  is the allowable type (currently, allowed) {if (!is_array ($arr)) {$arr =explode (",", Str_replace ("", "", $arr)); } return In_array ($filename, $arr)? 1:0;   } class Image {var $src;//source address var $newsrc;//New map path (after localization) var $allowtype =array (". gif", ". jpg", ". png", ". jpeg");//Allowed picture types var $regif = 0; Whether the thumbnail gif, for 0 does not handle var $keep = 0; Whether to keep the source file (1 is reserved, 0 is MD5) var $over = 0; Whether the existing picture can be overwritten, the Var $dir is not covered by 0; Image source directory var $newdir; Directory function __construct after processing ($olddir =null, $newdir =null) {$this->dir= $olddir? $olddir: "./images/temp"; $this->newdir= $newdir?  $newdir: "./images/s";   } function renames ($SRC) {$MD 5file=substr (MD5 ($SRC), 10,10). STRRCHR ($src, "."); After MD5 file name (for example: 3293okoe.gif) $md 5file= $this->w. " _ ". $this->h."   _ ". $md 5file; After processing the file name return $this->newdir.   /". $MD 5file;   Save the source picture, MD5 file name to the new directory} function Mini ($SRC, $w, $h, $q =80)//Generate thumbnail Mini (image address, width, height, quality) {$this->src= $src;   $this->w= $w;   $this->h= $h; if (STRRCHR ($SRC, ".")   = = ". gif" && $this->regif==0)//whether to process GIF graph {return $this->src;    if ($this->keep==0)//whether to keep the source file, the default is not reserved {$newsrc = $this->renames ($SRC);//The file address after renaming} else//Keep the original name {    $src =str_replace ("\ \", "/", $SRC);   $NEWSRC = $this-&GT;NEWDIR.STRRCHR ($src, "/");   if (file_exists ($NEWSRC) && $this->over==0)//If it already exists, return the address {return $NEWSRC directly; } if (Strstr ($SRC, "/http") &&!strstr ($src, $_server[' http_host '))//If it is a network file, save {$src = $thi FirstS->getimg ($SRC); } $arr =getimagesize ($SRC);   Gets the Picture property $width = $arr [0];   $height = $arr [1];   $type = $arr [2];     Switch ($type) {Case 1://1 = GIF, $im =imagecreatefromgif ($SRC);    Break     Case 2://2 = JPG $im =imagecreatefromjpeg ($SRC);    Break     Case 3://3 = PNG $im =imagecreatefrompng ($SRC);    Break   Default:return 0;   }//Processing thumbnails $nim =imagecreatetruecolor ($w, $h);   $k 1=round ($h/$w, 2);   $k 2=round ($height/$width, 2);    if ($k 1< $k 2) {$width _a= $width;    $height _a=round ($width * $k 1);    $SW = 0;   $sh = ($height-$height _a)/2;     } else {$width _a= $height/$k 1;     $height _a= $height;     $SW = ($width-$width _a)/2;   $sh = 0; }//Generate Picture if (function_exists (imagecopyresampled)) {imagecopyresampled ($nim, $im, 0,0, $SW, $sh, $w, $h, $width _a, $height   _A);   } else {imagecopyresized ($nim, $im, 0,0, $SW, $sh, $w, $h, $width _a, $height _a);   } if (!is_dir ($this->newdir)) {mkdir ($this->newdir);    } switch ($type)//Save Picture {Case 1: $rs =imagegif ($nim, $NEWSRC);    Break     Case 2: $rs =imagejpeg ($nim, $NEWSRC, $q);    Break     Case 3: $rs =imagepng ($nim, $NEWSRC);    Break   Default:return 0; } return $NEWSRC; Returns the post-processing path} function getimg ($filename) {$md 5file= $this->dir.   /". SUBSTR (MD5 ($filename), 10,10). STRRCHR ($filename,". ");   if (file_exists ($MD 5file)) {return $MD 5file;   }//start getting the file and return to the new path $img =file_get_contents ($filename);    if ($img) {if (!is_dir ($this->dir)) {mkdir ($this->dir);    } savefile ($md 5file, $img);   return $MD 5file;   }} function Reimg ($SRC, $w, $h, $q)//convert thumbnail (file name and structure unchanged) {$this->keep=1;   return $this->mini ($SRC, $w, $h, $q); Return generated address}} $image =new image (); echo $image->reimg ("Images/zht.jpg", 75,75,80); echo "<br/>"; echo $image->reimg ("Images/m8920.jpg", 75,75,80); echo "<br/>"; echo $image->getimg ("./images/s/zht.jpg");? >

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