PHP Plus watermark Proportional Scaling Program

PHP Plus watermark Proportional Scaling Program
function watermark ($DESIMG, $WATERIMG, $positon =1, $saveas =false, $alpha =30)

011 {

012//Get the basic information of the image

013 $temp =pathinfo ($DESIMG);

014 $name = $temp ["basename"];//<span Class=t_tag onclick=tagshow (event) href= "Tag.php?name=%ce%c4%bc%fe" > Files </SPAN> Name

015 $path = $temp [dirname]];//file Folder

016 $extension = $temp ["extension"];//file name extension

017 if ($saveas)

018 {

019//need to Save as

020 $name =rtrim ($name, ". $extension"). " _2. ";/ /re-renaming

021 $savepath = $path. " /". $name. $extension;

022}

023 Else

024 {

025///No need to save as to overwrite the original artwork

026 $savepath = $path. " /". $name;

027}

028 $info =getimageinfo ($DESIMG);//Get information about the target picture

029 $info 2=getimageinfo ($WATERIMG);//Get the information of the watermark picture

030

031 $desImg =create ($DESIMG);//create from original artwork

032 $waterImg =create ($WATERIMG);//create from watermark picture

033//Position 1: Top left

034 if ($positon ==1)

035 {

036 $x = 0;

037 $y = 0;

038}

039//Position 2: Top Right

040 if ($positon ==2)

041 {

042 $x = $info [0]-$info 2[0];

043 $y = 0;

044}

045//Position 3: Center

046 if ($positon ==3)

047 {

048 $x = ($info [0]-$info 2[0])/2;

049 $y = ($info [1]-$info 2[1])/2;

050}

051//Position 4: Bottom Left

052 if ($positon ==4)

053 {

054 $x = 0;

055 $y = $info [1]-$info 2[1];

056}

057//Position 5: Bottom Right

058 if ($positon ==5)

059 {

060 $x = $info [0]-$info 2[0];

061 $y = $info [1]-$info 2[1];

062}

063 Imagecopymerge ($DESIMG, $WATERIMG, $x, $y, 0,0, $info 2[0], $info 2[1], $alpha);

064 imagejpeg ($DESIMG, $savepath);

065 Imagedestroy ($DESIMG);

066 Imagedestroy ($WATERIMG);

067 return $savepath;

068}

069/**

070 * Get the information of the picture, Width,height,image/type

071 * @param string $src picture path

072 * @return <span class=t_tag onclick=tagshow (event) href= "Tag.php?name=%ca%fd%d7%e9" > Array </SPAN>

073 * **/

074 function Getimageinfo ($SRC)

075 {

076 return getimagesize ($SRC);

077}

078/**

079 * Create picture, return resource type

080 * @param string $src picture path

081 * @return Resource $im return resource type

082 * **/

083 function Create ($SRC)

084 {

085 $info =getimageinfo ($SRC);

086 switch ($info [2])

087 {

088 Case 1:

089 $im =imagecreatefromgif ($SRC);

090 break;

091 Case 2:

092 $im =imagecreatefromjpeg ($SRC);

093 break;

094 Case 3:

095 $im =imagecreatefrompng ($SRC);

096 break;

097}

098 return $im;

099}

100/**

101 * Thumbnail main function

102 * @param string $src picture path

@param int $w thumbnail width

* @param int $h thumbnail height

@return Mixed returns the thumbnail path

106 * **/

107

108 function Resize ($src, $w, $h)

109 {

$temp =pathinfo ($SRC);

$name = $temp ["basename"];//filename

112 $dir = $temp [dirname]];//file Folder

113 $extension = $temp ["extension"];//file name extension

114 $savepath = "{$dir}/{$name}.thumb.jpg";//thumbnail save path, new file name is *.thumb.jpg

115

116//Get the basic information of the picture

117 $info =getimageinfo ($SRC);

118 $width = $info [0];//get picture width

119 $height = $info [1];//get picture height

$per 1=round ($width/$height, 2);//Calculate the length/width ratio of the original artwork

121 $per 2=round ($w/$h, 2);//calculate the thumbnail aspect ratio

122

123//Calculate scaling ratio

124 if ($per 1> $per 2| | $per 1== $per 2)

125 {

126//The original image aspect ratio is greater than or equal to the thumbnail aspect ratio, then the width first

127 $per = $w/$width;

128}

129 if ($per 1< $per 2)

130 {

131//The original length and width ratio is less than the thumbnail aspect ratio, it is high priority

132 $per = $h/$height;

133}

134 $temp _w=intval ($width * $per);//Calculate the width of the original image scaling

135 $temp _h=intval ($height * $per);//Calculate the height after the original image is scaled

136 $temp _img=imagecreatetruecolor ($temp _w, $temp _h);//Create Canvas

137 $im =create ($SRC);

138 imagecopyresampled ($temp _img, $im, 0,0,0,0, $temp _w, $temp _h, $width, $height);

139 if ($per 1> $per 2)

140 {

Imagejpeg ($temp _img, $savepath);

addbg ($savepath, $w, $h, "w");

143//Width first, fill up the background when the height is insufficient after zooming

144}

145 if ($per 1== $per 2)

146 {

147 imagejpeg ($temp _img, $savepath);

148 return $savepath;

149//Equal ratio scaling

150}

151 if ($per 1< $per 2)

152 {

153 imagejpeg ($temp _img, $savepath);

154

addbg return ($savepath, $w, $h, "H");

156//High priority, make up the background when the width is insufficient after zooming

157}

158}

159/**

160 * Add background

161 * @param string $src picture path

162 * @param int $w background image width

163 * @param int $h background Image height

164 * @param String $first determines the final position of the image, W-width first h high priority wh: equal ratio

165 * @return return picture with background

166 * **/

167 function addbg ($SRC, $w, $h, $fisrt = "W")

168 {

169 $BG =imagecreatetruecolor ($w, $h);

170 $white = Imagecolorallocate ($BG, 255,255,255);

171 Imagefill ($BG, 0,0, $white);//Fill background

172

173//Get the target picture information

174 $info =getimageinfo ($SRC);

175 $width = $info [0];//target picture width

176 $height = $info [1];//target picture height

177 $img =create ($SRC);

178 if ($fisrt = = "WH")

179 {

180//Equal ratio scaling

181 return $SRC;

182}

183 Else

184 {

185 if ($fisrt = = "W")

186 {

187 $x = 0;

188 $y = ($h-$height)/2;//Vertical Center

189}

190 if ($fisrt = = "H")

191 {

$x = ($w-$width)/2;//Horizontal Center

193 $y = 0;

194}

195 Imagecopymerge ($BG, $img, $x, $y, 0,0, $width, $height, 100);

196 imagejpeg ($BG, $SRC);

197 Imagedestroy ($BG);

198 Imagedestroy ($IMG);

199 return $SRC;

200}

201

202}