pdo文字水印类，验证码类，缩略图类，logo类

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文字水印类

image.class.php

<?php
/**
* webrx.cn qq:7031633
* @author webrx
* @copyright copyright (c) 2003-2014 webrx Inc. (http://www.webrx.cn)
* @version 2014-9-7 webrx@126.com
*/
class Image {
private $f;
private $i;
private $path;
public function __construct($i = '') {
$this->f = dirname ( __FILE__ ) . '/f.ttf';
if (empty ( $i )) {
} else {
$this->i = imagecreatefromjpeg ( $i );
$this->path = $i;
}
}
public function check($len = 4) {
session_start ();
header ( 'content-type:image/png' );
$fs = [
'/a.ttf',
'/b.ttf',
'/f.ttf'
];
$font = dirname ( __FILE__ ) . $fs [mt_rand ( 0, 1 )];
$w = 35 * $len;
$h = 50;
$this->i = imagecreatetruecolor ( $w, $h );
$c = imagecolorallocatealpha ( $this->i, 0, 0, 0, 127 );
// imagecolortransparent($i,$c);
// imagefill($i,0,0,$c);
imagefilledrectangle ( $this->i, 0, 0, $w, $h, $this->gc ( $this->i, 'ffffff', mt_rand ( 0, 2 ) ) );
$sss = '';
for($j = 0; $j < $len; $j ++) {
$st = $this->gs ( 1 );
$sss .= $st;
imagettftext ( $this->i, mt_rand ( 15, 25 ), mt_rand ( - 30, 30 ), $j * 35 + 10, mt_rand ( 28, 38 ), $this->gc ( $this->i ), $font, $st );
}
$_SESSION ['code'] = $sss;
imagesetthickness ( $this->i, mt_rand ( 2, 8 ) );
for($j = 0; $j < mt_rand ( 5, 10 ); $j ++) {
imagefilledarc ( $this->i, mt_rand ( 0, $w ), mt_rand ( 0, $h ), mt_rand ( 0, $w ), mt_rand ( 0, $h ), mt_rand ( 0, 360 ), mt_rand ( 0, 360 ), $this->gc ( $this->i, 'rand', mt_rand ( 100, 120 ) ), IMG_ARC_NOFILL );
}
for($j = 0; $j < 10; $j ++) {
imagettftext ( $this->i, mt_rand ( 10, 15 ), mt_rand ( - 5, 5 ), mt_rand ( 0, $w ), mt_rand ( 0, $h ), $this->gc ( $this->i, 'rand', mt_rand ( 100, 120 ) ), $font, $this->gs ( 1 ) );
}
imagepng ( $this->i );
}
public function gs($n = 4) {
$s = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
$t = '';
for($i = 0; $i < $n; $i ++) {
$t .= substr ( $s, mt_rand ( 0, strlen ( $s ) - 1 ), 1 );
}
return $t;
}
public function setImg($i) {
$this->i = imagecreatefromjpeg ( $i );
$this->path = $i;
}
public function text($s = 30, $t = '版权所有', $c = 'rand', $a = 0, $p = 5, $f = true, $fn = 't_') {
$ii = getimagesize ( $this->path );
if ($ii [2] == 2) {
if ($ii [0] > 300) {
$pos = imagettfbbox ( $s, 0, $this->f, $t );
$pad = 30;
switch ($p) {
case 1 : // 左上角
$x = 0 - $pos [0] + $pad;
$y = 0 - $pos [7] + $pad;
break;
case 2 : // 上边水平中央
$x = ($ii [0] - $pos [2]) / 2;
$y = 0 - $pos [7] + $pad;
break;
case 3 :
$x = $ii [0] - $pos [2] - $pad;
$y = 0 - $pos [7] + $pad;
break;
case 4 :
$x = 0 - $pos [0] + $pad;
$y = ($ii [1] - $pos [6]) / 2;
break;
case 5 :
$x = ($ii [0] - $pos [2]) / 2;
$y = ($ii [1] - $pos [6]) / 2;
break;
case 6 :
$x = $ii [0] - $pos [2] - $pad;
$y = ($ii [1] - $pos [6]) / 2;
break;
case 7 :
$x = 0 - $pos [0] + $pad;
$y = $ii [1] - $pos [6] - $pad;
break;
case 8 :
$x = ($ii [0] - $pos [2]) / 2;
$y = $ii [1] - $pos [6] - $pad;
break;
case 9 :
$x = $ii [0] - $pos [2] - $pad;
$y = $ii [1] - $pos [6] - $pad;
break;
}
imagettftext ( $this->i, $s, 0, $x, $y, $this->gc ( $this->i, $c, $a ), $this->f, $t );
if ($f) {
imagejpeg ( $this->i, $this->path );
} else {
$path = dirname ( $this->path ) . '/';
$name = $fn . substr ( $this->path, strrpos ( $this->path, '/' ) + 1 );
imagejpeg ( $this->i, $path . $name );
}
}
}
}
public function logo($p = 5, $f = true, $fn = 'logo_') {
$ii = getimagesize ( $this->path );
if ($ii [2] == 2) {
if ($ii [0] > 300) {
$w = $ii [0];
$h = $ii [1];
// 水银图标 logo.png 格式
$logo = dirname ( __FILE__ ) . '/logo.png';
$li = imagecreatefrompng ( $logo );
$liw = imagesx ( $li );
$lih = imagesy ( $li );
$x = ($w - $liw) / 2;
$y = ($h - $lih) / 2;
$pad = 35;
switch ($p) {
case 1 :
$x = 0 + $pad;
$y = 0 + $pad;
break;
case 2 :
$y = 0 + $pad;
break;
case 3 :
$x = $w - $liw - $pad;
$y = 0 + $pad;
break;
case 4 :
$x = 0 + $pad;
break;
case 6 :
$x = $w - $liw - $pad;
break;
case 7 :
$x = 0 + $pad;
$y = $h - $lih - $pad;
break;
case 8 :
$y = $h - $lih - $pad;
break;
case 9 :
$x = $w - $liw - $pad;
$y = $h - $lih - $pad;
break;
}
imagecopy ( $this->i, $li, $x, $y, 0, 0, $liw, $lih );
if ($f) {
imagejpeg ( $this->i, $this->path );
} else {
$path = dirname ( $this->path ) . '/';
$name = $fn . substr ( $this->path, strrpos ( $this->path, '/' ) + 1 );
imagejpeg ( $this->i, $path . $name );
}
imagedestroy ( $li );
}
}
}
public function thumb($f = false, $w = 220, $h = 0, $fn = 's_') {
$ii = getimagesize ( $this->path );
if ($ii [2] == 2) {
if ($ii [0] > $w) {
$sw = $ii [0];
$sh = $ii [1];
$h = $h == 0 ? $w / $sw * $sh : $h;
$dst = imagecreatetruecolor ( $w, $h );
imagecopyresampled ( $dst, $this->i, 0, 0, 0, 0, $w, $h, $sw, $sh );
if ($f) {
imagejpeg ( $dst, $this->path );
} else {
$path = dirname ( $this->path ) . '/';
$name = $fn . substr ( $this->path, strrpos ( $this->path, '/' ) + 1 );
imagejpeg ( $dst, $path . $name );
}
imagedestroy ( $dst );
}
}
}
public function gc($i, $c = 'rand', $a = 0) {
$color = '';
switch ($c) {
case 'white' :
$color = imagecolorallocatealpha ( $i, 255, 255, 255, $a );
break;
case 'black' :
$color = imagecolorallocatealpha ( $i, 0, 0, 0, $a );
break;
case 'red' :
$color = imagecolorallocatealpha ( $i, 255, 0, 0, $a );
break;
case 'green' :
$color = imagecolorallocatealpha ( $i, 0, 255, 0, $a );
break;
case 'rand' :
$color = imagecolorallocatealpha ( $i, mt_rand ( 0, 255 ), mt_rand ( 0, 255 ), mt_rand ( 0, 255 ), $a );
break;
default :
$cc = str_split ( $c, 2 );
$color = imagecolorallocatealpha ( $i, hexdec ( $cc [0] ), hexdec ( $cc [1] ), hexdec ( $cc [2] ), $a );
break;
}
return $color;
}
public function __destruct() {
if (isset ( $this->i )) {
imagedestroy ( $this->i );
}
}
}