<?php
////////////////Defining the watermark Text function begins//////////////////
function Watertext ($i, $t = ' All rights reserved ', $s =20, $c = ' white ', $p =9) {
$img = Imagecreatefromjpeg ($i); Imagecreatefromjpeg-creates a new image from a file or URL.
$CC = ";
Switch loop, the color of the circular watermark text begins//////
Switch ($c) {
Case ' white ':
$CC = Imagecolorallocatealpha ($img, 255,255,255,50);
Break
Case ' Red ':
$CC = Imagecolorallocatealpha ($img, 255,0,0,50);
Break
Case ' green ':
$CC = Imagecolorallocatealpha ($img, 0,255,0,50);
Break
Case ' Blue ':
$CC = Imagecolorallocatealpha ($img, 0,0,255,50);
Break
Default
$CC = Imagecolorallocatealpha ($img, Mt_rand (0,255), Mt_rand (0,255), Mt_rand (0,255), Mt_rand (0,100));
Break
}
Switch loop, the color of the loop watermark text ends//////
imagecolorallocatealpha-assigning color + alpha to an image
$c = Imagecolorallocatealpha ($img, 255,255,255,80);
Define font for watermark text
$font = DirName (__file__). ' /h.ttf '; dirname-returns the directory portion of the path
Imagettfbbox-gets the range of text that uses TrueType fonts
$r = Imagettfbbox ($s, 0, $font, iconv (' GBK ', ' utf-8 ', $t));
$TTFW = $r [2]-$r [0] + 10;
$TTFH = $r [1] + 10;
$x = Imagesx ($img)-$TTFW; imagesx-Get Image width
$y = Imagesy ($img)-$TTFH; imagesy-Get Image Height
imagettftext-writing text to an image with TrueType fonts
Imagettftext ($img, $s, 0, $x, $y, $CC, $font, Iconv (' GBK ', ' utf-8 ', $t));
Imagejpeg ($img, $i); imagejpeg-output image to browser or file.
Imagedestroy ($IMG); Imagedestroy-destroying an image
}
////////////////Define watermark text function end//////////////////
////////////////Defining the watermark icon function begins//////////////////
function Watericon ($i) {
$img = Imagecreatefromjpeg ($i); Imagecreatefromjpeg-creates a new image from a file or URL.
Find the Watermark icon file created under a folder.
$l = DirName (__file__). ' /logo.png '; dirname-returns the directory portion of the path
$logo = Imagecreatefrompng ($l); Imagecreatefrompng-creates a new image from a file or URL.
$xx = Imagesx ($logo); imagesx-Get watermark Image width
$yy = Imagesy ($logo); imagesy-Get watermark Image Height
$x = Imagesx ($img)-$xx-15; Defines the x-coordinate of the watermark icon in the picture
$y = Imagesy ($img)-$yy-15; Defines the y-coordinate of the watermark icon in the picture
Imagecopy ($img, $logo, $x, $y, 0,0, $xx, $yy); imagecopy-part of a copy image
Imagejpeg ($img, $i); imagejpeg-output image to browser or file.
Imagedestroy ($IMG); Imagedestroy-destroying an image
Imagedestroy ($logo); Imagedestroy-destroying an image
}
A.jpg s_a.jpg
////////////////define watermark icon function End//////////////////
Define the thumbnail function to start//////////
function THUMD ($i, $w =170, $h =0) {//default width is 170, Gaocheng scale
$WW = $w;
$HH = $h;
$img = Imagecreatefromjpeg ($i); Imagecreatefromjpeg-creates a new image from a file or URL.
$IW = Imagesx ($img); imagesx-Get watermark Image width
$ih = Imagesy ($img); imagesy-Get watermark Image Height
If the height is 0, the high proportionally automatically calculates
if ($h ==0) {
$HH = $w/$iw * $IH;
}
$new = Imagecreatetruecolor ($WW, $hh); imagecreatetruecolor-Create a new true color image
imagecopyresampled-resampling and resizing copies of portions of images
Imagecopyresampled ($new, $img, 0,0,0,0, $WW, $hh, $IW, $ih);
pathinfo-return the file path information
$path = PathInfo ($i, pathinfo_dirname). ' /s_ '. PathInfo ($i, pathinfo_basename);
Imagejpeg ($new, $path); imagejpeg-output image to browser or file.
Imagedestroy ($new); Imagedestroy-destroying an image
Imagedestroy ($IMG); Imagedestroy-destroying an image
}
////////define thumbnail function End//////////
Application of PHP images-generate images with watermark text-Generate images with watermark icon-Generate thumbnails (//For comment content, without affecting file execution)
