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  • pdo文字水印类，验证码类，缩略图类，logo类

    文字水印类
    image.class.php
    1. <?php
    2. /**
    3.  * webrx.cn  qq:7031633
    4. * @author webrx
    5. * @copyright  copyright (c) 2003-2014   webrx Inc. (http://www.webrx.cn)
    6. * @version    2014-9-7   webrx@126.com
    7. */
    8. class Image {
    9.     private $f;
    10.     private $i;
    11.     private $path;
    12.     public function __construct($i = '') {
    13.         $this->f = dirname ( __FILE__ ) . '/f.ttf';
    14.         if (empty ( $i )) {
    15.         } else {
    16.             $this->i = imagecreatefromjpeg ( $i );
    17.             $this->path = $i;
    18.         }
    19.     }
    20.     public function check($len = 4) {
    21.         session_start ();
    22.         header ( 'content-type:image/png' );
    23.         $fs = [
    24.             '/a.ttf',
    25.             '/b.ttf',
    26.             '/f.ttf'
    27.         ];
    28.         $font = dirname ( __FILE__ ) . $fs [mt_rand ( 0, 1 )];
    29.         $w = 35 * $len;
    30.         $h = 50;
    31.         $this->i = imagecreatetruecolor ( $w, $h );
    32.         $c = imagecolorallocatealpha ( $this->i, 0, 0, 0, 127 );
    33.         // imagecolortransparent($i,$c);
    34.         // imagefill($i,0,0,$c);
    35.         imagefilledrectangle ( $this->i, 0, 0, $w, $h, $this->gc ( $this->i, 'ffffff', mt_rand ( 0, 2 ) ) );
    36.         $sss = '';
    37.         for($j = 0; $j < $len; $j ++) {
    38.             $st = $this->gs ( 1 );
    39.             $sss .= $st;
    40.             imagettftext ( $this->i, mt_rand ( 15, 25 ), mt_rand ( - 30, 30 ), $j * 35 + 10, mt_rand ( 28, 38 ), $this->gc ( $this->i ), $font, $st );
    41.         }
    42.         $_SESSION ['code'] = $sss;
    43.         imagesetthickness ( $this->i, mt_rand ( 2, 8 ) );
    44.         for($j = 0; $j < mt_rand ( 5, 10 ); $j ++) {
    45.             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 ( $this->i, 'rand', mt_rand ( 100, 120 ) ), IMG_ARC_NOFILL );
    46.         }
    47.         for($j = 0; $j < 10; $j ++) {
    48.             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 ) );
    49.         }
    50.         imagepng ( $this->i );
    51.     }
    52.     public function gs($n = 4) {
    53.         $s = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
    54.         $t = '';
    55.         for($i = 0; $i < $n; $i ++) {
    56.             $t .= substr ( $s, mt_rand ( 0, strlen ( $s ) - 1 ), 1 );
    57.         }
    58.         return $t;
    59.     }
    60.     public function setImg($i) {
    61.         $this->i = imagecreatefromjpeg ( $i );
    62.         $this->path = $i;
    63.     }
    64.     public function text($s = 30, $t = '版权所有', $c = 'rand', $a = 0, $p = 5, $f = true, $fn = 't_') {
    65.         $ii = getimagesize ( $this->path );
    66.         if ($ii [2] == 2) {
    67.             if ($ii [0] > 300) {
    68.                 $pos = imagettfbbox ( $s, 0, $this->f, $t );
    69.                 $pad = 30;
    70.                 switch ($p) {
    71.                     case 1 : // 左上角
    72.                         $x = 0 - $pos [0] + $pad;
    73.                         $y = 0 - $pos [7] + $pad;
    74.                         break;
    75.                     case 2 : // 上边 水平中央
    76.                         $x = ($ii [0] - $pos [2]) / 2;
    77.                         $y = 0 - $pos [7] + $pad;
    78.                         break;
    79.                     case 3 :
    80.                         $x = $ii [0] - $pos [2] - $pad;
    81.                         $y = 0 - $pos [7] + $pad;
    82.                         break;
    83.                     case 4 :
    84.                         $x = 0 - $pos [0] + $pad;
    85.                         $y = ($ii [1] - $pos [6]) / 2;
    86.                         break;
    87.                     case 5 :
    88.                         $x = ($ii [0] - $pos [2]) / 2;
    89.                         $y = ($ii [1] - $pos [6]) / 2;
    90.                         break;
    91.                     case 6 :
    92.                         $x = $ii [0] - $pos [2] - $pad;
    93.                         $y = ($ii [1] - $pos [6]) / 2;
    94.                         break;
    95.                         	
    96.                     case 7 :
    97.                         $x = 0 - $pos [0] + $pad;
    98.                         $y = $ii [1] - $pos [6] - $pad;
    99.                         break;
    100.                         	
    101.                     case 8 :
    102.                         $x = ($ii [0] - $pos [2]) / 2;
    103.                         $y = $ii [1] - $pos [6] - $pad;
    104.                         break;
    105.                         	
    106.                     case 9 :
    107.                         $x = $ii [0] - $pos [2] - $pad;
    108.                         $y = $ii [1] - $pos [6] - $pad;
    109.                         break;
    110.                 }
    111.                 imagettftext ( $this->i, $s, 0, $x, $y, $this->gc ( $this->i, $c, $a ), $this->f, $t );
    113.                 if ($f) {
    114.                     imagejpeg ( $this->i, $this->path );
    115.                 } else {
    116.                     $path = dirname ( $this->path ) . '/';
    117.                     $name = $fn . substr ( $this->path, strrpos ( $this->path, '/' ) + 1 );
    118.                     imagejpeg ( $this->i, $path . $name );
    119.                 }
    120.             }
    121.         }
    122.     }
    123.     public function logo($p = 5, $f = true, $fn = 'logo_') {
    124.         $ii = getimagesize ( $this->path );
    125.         if ($ii [2] == 2) {
    126.             if ($ii [0] > 300) {
    127.                 $w = $ii [0];
    128.                 $h = $ii [1];
    130.                 // 水银图标 logo.png 格式
    131.                 $logo = dirname ( __FILE__ ) . '/logo.png';
    132.                 $li = imagecreatefrompng ( $logo );
    133.                 $liw = imagesx ( $li );
    134.                 $lih = imagesy ( $li );
    136.                 $x = ($w - $liw) / 2;
    137.                 $y = ($h - $lih) / 2;
    139.                 $pad = 35;
    140.                 switch ($p) {
    141.                     case 1 :
    142.                         $x = 0 + $pad;
    143.                         $y = 0 + $pad;
    144.                         break;
    145.                         	
    146.                     case 2 :
    147.                         $y = 0 + $pad;
    148.                         break;
    149.                         	
    150.                     case 3 :
    151.                         $x = $w - $liw - $pad;
    152.                         $y = 0 + $pad;
    153.                         break;
    154.                         	
    155.                     case 4 :
    156.                         $x = 0 + $pad;
    157.                         break;
    158.                         	
    159.                     case 6 :
    160.                         $x = $w - $liw - $pad;
    161.                         break;
    162.                         	
    163.                     case 7 :
    164.                         $x = 0 + $pad;
    165.                         $y = $h - $lih - $pad;
    166.                         break;
    167.                         	
    168.                     case 8 :
    169.                         $y = $h - $lih - $pad;
    170.                         break;
    171.                         	
    172.                     case 9 :
    173.                         $x = $w - $liw - $pad;
    174.                         $y = $h - $lih - $pad;
    175.                         break;
    176.                 }
    177.                 imagecopy ( $this->i, $li, $x, $y, 0, 0, $liw, $lih );
    178.                 if ($f) {
    179.                     imagejpeg ( $this->i, $this->path );
    180.                 } else {
    181.                     $path = dirname ( $this->path ) . '/';
    182.                     $name = $fn . substr ( $this->path, strrpos ( $this->path, '/' ) + 1 );
    183.                     imagejpeg ( $this->i, $path . $name );
    184.                 }
    185.                 imagedestroy ( $li );
    186.             }
    187.         }
    188.     }
    189.     public function thumb($f = false, $w = 220, $h = 0, $fn = 's_') {
    190.         $ii = getimagesize ( $this->path );
    191.         if ($ii [2] == 2) {
    192.             if ($ii [0] > $w) {
    193.                 $sw = $ii [0];
    194.                 $sh = $ii [1];
    195.                 $h = $h == 0 ? $w / $sw * $sh : $h;
    196.                 $dst = imagecreatetruecolor ( $w, $h );
    197.                 imagecopyresampled ( $dst, $this->i, 0, 0, 0, 0, $w, $h, $sw, $sh );
    198.                 if ($f) {
    199.                     imagejpeg ( $dst, $this->path );
    200.                 } else {
    201.                     $path = dirname ( $this->path ) . '/';
    202.                     $name = $fn . substr ( $this->path, strrpos ( $this->path, '/' ) + 1 );
    203.                     imagejpeg ( $dst, $path . $name );
    204.                 }
    205.                 imagedestroy ( $dst );
    206.             }
    207.         }
    208.     }
    209.     public function gc($i, $c = 'rand', $a = 0) {
    210.         $color = '';
    211.         switch ($c) {
    212.             case 'white' :
    213.                 $color = imagecolorallocatealpha ( $i, 255, 255, 255, $a );
    214.                 break;
    215.             case 'black' :
    216.                 $color = imagecolorallocatealpha ( $i, 0, 0, 0, $a );
    217.                 break;
    218.             case 'red' :
    219.                 $color = imagecolorallocatealpha ( $i, 255, 0, 0, $a );
    220.                 break;
    221.             case 'green' :
    222.                 $color = imagecolorallocatealpha ( $i, 0, 255, 0, $a );
    223.                 break;
    224.             case 'rand' :
    225.                 $color = imagecolorallocatealpha ( $i, mt_rand ( 0, 255 ), mt_rand ( 0, 255 ), mt_rand ( 0, 255 ), $a );
    226.                 break;
    227.             default :
    228.                 $cc = str_split ( $c, 2 );
    229.                 $color = imagecolorallocatealpha ( $i, hexdec ( $cc [0] ), hexdec ( $cc [1] ), hexdec ( $cc [2] ), $a );
    230.                 break;
    231.         }
    232.         return $color;
    233.     }
    234.     public function __destruct() {
    235.         if (isset ( $this->i )) {
    236.             imagedestroy ( $this->i );
    237.         }
    238.     }
    239. }
    类的调用及使用
    1. <?php 
    2.  include 'inc/Image.class.php';
    3.  $i=new Image('c:/a.jpg');
    4.  $i->text();
    5.  
    6.
    给多张图片添加水印文字
    1. <?php 
    2.  include 'inc/Image.class.php';
    3.  $i=new Image('c:/a.jpg');
    4.  $i->text();
    5.  
    6.  $i->setImg('c:/b.jpg');
    7.  $i->text(50);
    8.  
    9.  $i->setImg('c:/c.jpg');
    10.  $i->text(100);
    11.
    验证码的调用
    1. <?php 
    2.  include 'inc/Image.class.php';
    3.  $i=new Image();
    4. $i->check(4);
    5.  
    6.
    缩略图类的调用，如果写200,100表示固定宽高，只写200，高度自适应，
    1. <?php 
    2.  include 'inc/Image.class.php';
    3.  $i=new Image();
    4. $i->setImg('c:/d.jpg');
    5. $i->thumb(false,200);
    logo 图片放在图上的调用
    1. <?php 
    2.  include 'inc/Image.class.php';
    3.  $i=new Image();
    4. $i->setImg('c:/d.jpg');
    5. $i->logo();
    6.  
    7.  

    1. <?php 
    2.  include 'inc/Image.class.php';
    3.  $i=new Image();
    4. $i->setImg('c:/d.jpg');
    5. $i->logo(5,false);  //5 表示位置，false表示新建一张图片
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  • 原文地址：https://www.cnblogs.com/lsr111/p/4603400.html
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