PHP to generate promotional posters method sharing

This article mainly for you to share is how to use PHP to generate promotional posters of the method and several sample code, the need for small partners can refer to the next!

Often there is the need to generate promotional posters, including the specified QR code, to share someone else to scan the code to determine the user referral relationship.

Careful analysis, the necessary elements of the promotion poster is the poster background and QR code, both of which are easy to generate, but to combine the two together into a picture two-dimensional and can be saved to the local easy to share out, this is the difficulty, in the H5 can use canvas to complete similar functions, But in the small program inside a lot of limitations. Then we generate the poster directly in the background, the foreground calls directly.

Here's how:

/** Generate a poster @param the array parameter, including the picture and text @param string $filename generate the poster file name, do not pass this parameter does not generate the file, directly output the picture @return [Type] [description]*/ function Createposter ($config =array (), $filename = "") {//If you want to read a newspaper what is wrong, you can first note this headerif (empty ($filename)) header (" Content-type:image/png "); $imageDefault = Array (' Left ' =>0, ' top ' =>0, ' right ' =>0, ' bottom ' =>0, ' width ' = >100, ' height ' =>100, ' opacity ' =>100); $textDefault = Array (' text ' = = ', ' Left ' =>0, ' top ' =>0, ' FontSize ' =>32,//font size ' fontcolor ' = ' 255,255,255 ',//Font Color ' angle ' =>0, ' $background = $config [' Background '];// Poster bottom background//background Method $backgroundinfo = getimagesize ($background); $backgroundFun = ' imagecreatefrom '. image_type_to_ Extension ($backgroundInfo [2], false); $background = $backgroundFun ($background); $backgroundWidth = Imagesx ($ background); Background width $backgroundheight = Imagesy ($background); Background height $imageres = Imagecreatetruecolor ($backgroundWidth, $backgroundHeight); $color = imagecolorallocate ($imageRes, 0 , 0, 0); Imagefill ($imageRes, 0, 0, $color);//ImagecolortranspaRent ($imageRes, $color); Color Transparent imagecopyresampled ($imageRes, $background, 0,0,0,0,imagesx ($background), Imagesy ($background), Imagesx ($ Background), Imagesy ($background)),//processing of the picture if (!empty ($config [' image ')]) {foreach ($config [' image '] as $key = $val) {$val = Array_merge ($imageDefault, $val); $info = getimagesize ($val [' url ']); $function = ' imagecreatefrom '. Image_type_ To_extension ($info [2], false), if ($val [' stream ']) {//If a string image stream is passed $info = getimagesizefromstring ($val [' url ']); function = ' imagecreatefromstring ';} $res = $function ($val [' url ']), $resWidth = $info [0]; $resHeight = $info [1];//build artboards, scale pictures to specified dimensions $canvas= Imagecreatetruecolor ($val [' width '], $val [' height ']); Imagefill ($canvas, 0, 0, $color);//Key function, parameter (target resource, source, start coordinate of target resource X, y , the source resource's start coordinates x, Y, the target resource's width height w,h, the source resource's width height w,h) imagecopyresampled ($canvas, $res, 0, 0, 0, 0, $val [' width '], $val [' Height '],$ Reswidth, $resHeight); $val [' left '] = $val "left"]<0? $backgroundWidth-abs ($val [' left '])-$val [' width ']: $val [' Left ']; $val [' top '] = $val [' Top ']<0? $backgroundHeight-ABS ($val [' top '])-$val [' Height ']: $val [' top '];//place image Imagecopymerge ($imageRes, $canvas, $val [' left '], $val [' Top '],$ Val[' right ', $val [' Bottom '], $val [' width '], $val [' height '], $val [' opacity ']);//left, top, right, bottom, width, height, transparency}}//processing text if (!empty ($config [' text '])) {foreach ($config [' text '] as $key = + $val) {$val = Array_merge ($textDefault, $val); list ($R, $G, $B) = Explode (', ', $val [') FontColor ']); $fontColor = Imagecolorallocate ($imageRes, $R, $G, $B); $val [' left '] = $val [' Left ']<0?$ Backgroundwidth-abs ($val [' left ']): $val [' left ']; $val [' top '] = $val [' Top ']<0? $backgroundHeight-abs ($val [' top ']) : $val [' Top '];imagettftext ($imageRes, $val [' fontSize '], $val [' angle '], $val [' left '], $val [' top '], $fontColor, $val [' Fontpath '], $val [' text ']);}} Generate Picture if (!empty ($filename)) {$res = imagejpeg ($imageRes, $filename, 90);//Save to local Imagedestroy ($imageRes); if (! $res) return False;return $filename;} Else{imagejpeg ($imageRes);//Display Imagedestroy ($imageRes) on the browser;}}

Summary: This achieves a simple can be statistical promotion of the number of fans of the invitation.