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  • 传值接值，php文件互联

    echo '<pre>';
    print_r($_POST);//接post传值
    print_r($_GET);//接get传值
    print_r($_REQUEST);///接post传值或者get传值
    print_r($_SERVER);
    超级链接传值用的是get方法 $get,$request
    1. <a href="ll.php?name=李四&age=20&psw=123">注册</a>
    get传值在标题栏显示账号密码不安全
    session 会话，只要是登陆，验证码用的比较多
    1.<?php
    session_start();
    $_SESSION['user']='admin';
    先执行admin
    2.session_start();//在当前网页的第一行开始
    if(!isset($_SESSION['user'])){
    echo '请去登陆';
    }else{
    echo '欢迎：'.$_SESSION['user'];
    }

    1. <?php
    2. session_start();
    3. if(isset($_POST['checkcode'])){
    4. 	if($_POST['checkcode']==''){
    5. 		echo '请填写验证码';
    6. 	}else if($_POST['checkcode']==$_SESSION['code']){
    7. 		echo '验证码输入正确';
    8. 	}else{
    9. 		echo '验证码有误';
    10. 	}
    11. }else{
    12. 	echo 'no';
    13. }
    验证验证码是否错误
    1. <!DOCTYPE html>
    2. <html>
    3. <head>
    4. 	<meta charset="utf-8">
    5. 	<title></title>
    6. 	<meta name="keywords" content="关键字">
    7. 	<meta name="description" content="简介">
    8. 	<link rel="stylesheet" type="text/css" href="index.css">
    9. 	<script src=""></script>
    10. </head>
    11. <body>
    12. <form action="reg.php" method="post">
    13. 姓名： <input type="text" autofocus name="user"><br>
    14. 密码： <input type="password" name="psw"><br>
    15. 验证码：<input type="text" name="checkcode">
    16. <img src="inc/c.php"><br>
    17. <input type="submit" value="提交">
    18. </form>
    19. </body>
    20. </html>

    c.php
    <?php
    include 'i.php';
    check();
    i.php
    1. <?php
    2. function check($len=4){
    3. 	session_start();
    4. 	header('content-type:image/png');
    5. 	$fs = ['/a.ttf','/b.ttf','/f.ttf'];
    6. 	$font = dirname(__FILE__).$fs[mt_rand(0,1)];
    7. 	$w = 35*$len;
    8. 	$h = 50;
    9. 	$i = imagecreatetruecolor($w,$h);
    10. 	$c = imagecolorallocatealpha($i,0,0,0,127);
    11. 	//imagecolortransparent($i,$c);
    12. 	//imagefill($i,0,0,$c);
    13. 	imagefilledrectangle($i,0,0,$w,$h,gc($i,'ffffff',mt_rand(0,2)));
    14. 	$sss = '';
    15. 	for($j=0;$j<$len;$j++){
    16. 		$st = gs(1);
    17. 		$sss.=$st;
    18. 	   imagettftext($i,mt_rand(15,25),mt_rand(-30,30),$j*35+10,mt_rand(28,38),gc($i),$font,$st);
    19. 	}
    20. 	$_SESSION['code'] = $sss;
    21. 	imagesetthickness($i,mt_rand(2,8));
    22. 	for($j=0;$j<mt_rand(5,10);$j++){
    23. 		imagefilledarc($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),gc($i,'rand',mt_rand(100,120)),IMG_ARC_NOFILL);	
    24. 	}
    25. 	for($j=0;$j<10;$j++){
    26. 	   imagettftext($i,mt_rand(10,15),mt_rand(-5,5),mt_rand(0,$w),mt_rand(0,$h),gc($i,'rand',mt_rand(100,120)),$font,gs(1));
    27. 	}
    28. 	imagepng($i);
    29. 	imagedestroy($i);	
    30. }
    32. function gs($n=4){
    33.     $s = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';	
    34. 	$t = '';
    35. 	for($i=0;$i<$n;$i++){
    36. 		$t.=substr($s,mt_rand(0,strlen($s)-1),1);
    37. 	}
    38. 	return $t;
    39. }
    41. /**
    42.  *  生成缩略
    43.  */
    44. function thumb($i,$f=false,$w=220,$h=0,$fn='s_'){
    45. 	$ii = getimagesize($i);
    46. 	if($ii[2]==2){
    47. 		if($ii[0]>$w){
    48. 		    $src = imagecreatefromjpeg($i);
    49. 			$sw = $ii[0];
    50. 			$sh = $ii[1];
    52. 			$h = $h==0 ? $w/$sw*$sh : $h;
    53. 			//建立新的缩略图
    54. 			$dst = imagecreatetruecolor($w,$h);
    55. 			imagecopyresampled($dst,$src,0,0,0,0,$w,$h,$sw,$sh);
    56. 			if($f){
    57. 				imagejpeg($dst,$i);
    58. 			}else{
    59. 				$path = dirname($i).'/';
    60. 				$name = $fn.substr($i,strrpos($i,'/')+1);
    61. 				imagejpeg($dst,$path.$name);			
    62. 			}
    63. 			imagedestroy($dst);
    64. 			imagedestroy($src);
    65. 		}
    66. 	}
    67. }
    69. /**
    70.  * 功能：生成水银图标，水银图标文件在inc目录中 名称 logo.png
    71.  */
    72. function logo($i,$p=5,$f=true,$fn='logo_'){
    73. 	$ii = getimagesize($i);
    74. 	if($ii[2]==2){
    75. 		if($ii[0]>300){
    76. 		    $ni = imagecreatefromjpeg($i);
    77. 			$w = $ii[0];
    78. 			$h = $ii[1];
    79. 			
    80. 			//水银图标 logo.png 格式
    81. 			$logo = dirname(__FILE__).'/logo.png';
    82. 			$li = imagecreatefrompng($logo);
    83. 			$liw = imagesx($li);
    84. 			$lih = imagesy($li);
    85. 			
    86. 			$x = ($w-$liw)/2;
    87. 			$y = ($h-$lih)/2;
    88. 			
    89. 			$pad = 35;
    90. 			switch($p){
    91. 			    case 1:
    92. 					$x = 0+$pad;
    93. 					$y = 0+$pad;
    94. 				break;
    95. 				
    96. 				case 2:
    97. 					$y = 0+$pad;				
    98. 				break;
    99. 				
    100. 				case 3:
    101. 					$x = $w-$liw-$pad;
    102. 					$y = 0+$pad;
    103. 				break;
    104. 				
    105. 				case 4:
    106. 					$x = 0+$pad;
    107. 				break;
    108. 				
    109. 				case 6:
    110. 					$x = $w-$liw-$pad;
    111. 				break;
    112. 				
    113. 				case 7:
    114. 					$x = 0+$pad;
    115. 					$y = $h-$lih-$pad;
    116. 				break;
    117. 				
    118. 				case 8:
    119. 					$y = $h-$lih-$pad;
    120. 				break;
    121. 				
    122. 				case 9:
    123. 					$x = $w-$liw-$pad;
    124. 					$y = $h-$lih-$pad;
    125. 				break;	
    126. 			}
    127. 			imagecopy($ni,$li,$x,$y,0,0,$liw,$lih);
    128. 			if($f){
    129. 				imagejpeg($ni,$i);
    130. 			}else{
    131. 				$path = dirname($i).'/';
    132. 				$name = $fn.substr($i,strrpos($i,'/')+1);
    133. 				imagejpeg($ni,$path.$name);			
    134. 			}
    135. 			imagedestroy($ni);
    136. 			imagedestroy($li);
    137. 		}
    138. 	}
    139. }
    141. function txt($i,$s=30,$t='版权所有',$c='rand',$a=0,$p=5,$f=true,$fn='t_'){
    142. 	$font = dirname(__FILE__).'/f.ttf';
    143. 	$ii = getimagesize($i);
    144. 	if($ii[2]==2){
    145. 		if($ii[0]>300){
    146. 		    $ni = imagecreatefromjpeg($i);
    147. 			$pos = imagettfbbox($s,0,$font,$t);
    148. 			$pad = 30;
    149. 			switch($p){
    150. 				case 1://左上角
    151. 					$x = 0-$pos[0]+$pad;
    152. 					$y = 0-$pos[7]+$pad;
    153. 				break;
    154. 				
    155. 				case 2://上边 水平中央
    156. 					$x = ($ii[0]-$pos[2])/2;
    157. 					$y = 0-$pos[7]+$pad;
    158. 				break;
    159. 				
    160. 				case 3:
    161. 					$x = $ii[0]-$pos[2]-$pad;
    162. 					$y = 0-$pos[7]+$pad;
    163. 				break;
    164. 				
    165. 				case 4:
    166. 					$x = 0-$pos[0]+$pad;
    167. 					$y = ($ii[1]-$pos[6])/2;
    168. 				break;
    169. 				
    170. 				case 5:
    171. 					$x = ($ii[0]-$pos[2])/2;
    172. 					$y = ($ii[1]-$pos[6])/2;
    173. 				break;
    174. 				
    175. 				case 6:
    176. 					$x = $ii[0]-$pos[2]-$pad;
    177. 					$y = ($ii[1]-$pos[6])/2;
    178. 				break;
    179. 				
    180. 				case 7:
    181. 					$x = 0-$pos[0]+$pad;
    182. 					$y = $ii[1]-$pos[6]-$pad;
    183. 				break;
    184. 				
    185. 				case 8:
    186. 					$x = ($ii[0]-$pos[2])/2;
    187. 					$y = $ii[1]-$pos[6]-$pad;
    188. 				break;
    189. 				
    190. 				case 9:
    191. 				 	$x = $ii[0]-$pos[2]-$pad;
    192. 					$y = $ii[1]-$pos[6]-$pad;
    193. 				break;
    194. 			}
    195. 			imagettftext($ni,$s,0,$x,$y,gc($ni,$c,$a),$font,$t);
    197. 			if($f){
    198. 				imagejpeg($ni,$i);
    199. 			}else{
    200. 				$path = dirname($i).'/';
    201. 				$name = $fn.substr($i,strrpos($i,'/')+1);
    202. 				imagejpeg($ni,$path.$name);			
    203. 			}
    204. 			imagedestroy($ni);
    205. 		}
    206. 	}
    207. }
    209. function gc($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. }
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  • 原文地址：https://www.cnblogs.com/lsr111/p/4523576.html
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