PHP get remote image URL to generate thumbnail image method

getimg.php

<?PHP/** * * function: Adjust picture size or generate thumbnails * return: True/false * Parameters: * $Image need to adjust the picture (including the path) * $Dw The maximum width of =450 adjustment, the absolute width when the thumbnail is $Dh =450 the maximum height when adjusting; The absolute height of the sketch * $Type = 1 1, adjust the size; 2, generate thumbnail image*/ $phtypes=Array(' Img/gif ', ' img/jpg ', ' img/jpeg ', ' img/bmp ', ' img/pjpeg ', ' img/x-png '); functionCompressimg ($Image,$Dw,$Dh,$Type){      IF(!file_exists($Image)){          return false; }      //If you need to generate thumbnails, copy the original image to $image assignment (generate thumbnail action)///When the type==1 is not copied, it will regenerate the reduced image on the original image file (resize operation)    IF($Type!=1){          Copy($Image,Str_replace(".", "_x.",$Image)); $Image=Str_replace(".", "_x.",$Image); }      //get the type of file, build different objects according to different types    $ImgInfo=getimagesize($Image); Switch($ImgInfo[2]){           Case1:$Img[Email protected] ($Image);  Break;  Case2:$Img[Email protected] ($Image);  Break;  Case3:$Img[Email protected] ($Image);  Break; }      //if the object is not created successfully, the non-picture file    IF(Empty($Img)){          //If an error occurs when generating thumbnails, you need to delete the files that have already been copied        IF($Type!=1){              unlink($Image); }          return false; }      //If you are performing a resize operation    IF($Type==1){          $w=imagesx ($Img); $h=imagesy ($Img); $width=$w; $height=$h; IF($width>$Dw){              $Par=$Dw/$width; $width=$Dw; $height=$height*$Par; IF($height>$Dh){                  $Par=$Dh/$height; $height=$Dh; $width=$width*$Par; }          } ElseIF($height>$Dh) {              $Par=$Dh/$height; $height=$Dh; $width=$width*$Par; IF($width>$Dw){                  $Par=$Dw/$width; $width=$Dw; $height=$height*$Par; }          } Else {              $width=$width; $height=$height; }          $nImg=imagecreatetruecolor ($width,$height);//Create a new true Color canvasImagecopyresampled ($nImg,$Img, 0,0,0,0,$width,$height,$w,$h);//Resample and resize a portion of an imageImagejpeg ($nImg,$Image);//output images to a browser or file in JPEG format        return true; } Else{//If you are performing a build thumbnail operation        $w=imagesx ($Img); $h=imagesy ($Img); $width=$w; $height=$h; $nImg=imagecreatetruecolor ($Dw,$Dh); IF($h/$w>$Dh/$Dw){//high and relatively large            $width=$Dw; $height=$h*$Dw/$w; $IntNH=$height-$Dh; Imagecopyresampled ($nImg,$Img, 0,-$IntNH/1.8, 0, 0,$Dw,$height,$w,$h); } Else{//wide Larger            $height=$Dh; $width=$w*$Dh/$h; $IntNW=$width-$Dw; Imagecopyresampled ($nImg,$Img,-$IntNW/1.8,0,0,0,$width,$Dh,$w,$h); } imagejpeg ($nImg,$Image); return true;    }  }; /** * Get pictures on server based on URL * $url Server slice path $filename file name*/  functionGrabimage ($url,$filename="") {      if($url=="")return false; if($filename=="") {          $ext=STRRCHR($url,"."); if($ext! = ". gif" &&$ext! = ". jpg" &&$ext! = ". png")              return false; $filename=Date("Ymdhis").$ext; }      Ob_start(); ReadFile($url); $img=ob_get_contents(); Ob_end_clean(); $size=strlen($img); $fp 2[Email protected]fopen($filename, "a"); fwrite($fp 2,$img); fclose($fp 2); return $filename; }  ?>

Call:

<?PHPrequire_once(' getimg.php ' );$imgPath= ' http://xxx.com/aa.jpg ';//Remote URL address$tempPath= ' adsdf.jpg ';//Save Picture Path  if(Is_file($tempPath)){      unlink($tempPath); }    $bigImg=grabimage ($imgPath,$tempPath); Var_dump(Compressimg ($bigImg, 100,100,1)); ?>

PHP get remote image URL to generate thumbnail image method