PHP微信公众号授权登陆，获取OpenID，昵称，头像相关信息完整源代码

<?php # @PAOCMS & PAOPHP # @Author: Wasing.tao (陶之11) # @Contact: admin@paophp.com; # @Package: PAOPHP Captcha; # @Support: http://bbs.paophp.com/thread-41-1-1.html # @Copyright: (c) 2014 Paophp.com All rights reserved. # @Description: The Captcha Style Copyright by Paocms # @欢迎加入【珠三角PHP联盟群】: 5579345 (汇集高端PHP大牛技术交流) # @参数说明及使用方法请看：bbs.paophp.com; class Captcha{ var $image = null; var $fonts = './Fonts/'; var $width = 100; var $height = 30; var $length = 4; var $phrase = null; var $string = array('A','B','C','D','E','F','H','J','K','L','M','N','P','R','S','T','U','V','W','X','Y','Z'); public function __construct() { if (!extension_loaded("gd")) exit("Captcha Unable Load GD Library Copyright paophp.com"); } public function Phrase() { if (strlen($this->phrase) != $this->length) { $phrase = null; $rand = array_rand($this->string, $this->length); foreach ($rand as $index) $phrase .= $this->string[$index]; $this->phrase = $phrase; } return $this->phrase; } public function Generate() { $image = is_resource($this->image) ? $this->image : $this->GenerateImage(); header("Content-type: image/png"); imagepng($image); imagedestroy($image); } private function CreateImage() { if (!is_resource($this->image)) { $this->image = imagecreatetruecolor($this->width, $this->height); $color1 = imagecolorallocate($this->image, mt_rand(200, 255),mt_rand(200, 255), mt_rand(150, 255)); $color2 = imagecolorallocate($this->image, mt_rand(200, 255),mt_rand(200, 255), mt_rand(150, 255)); $color1 = imagecolorsforindex($this->image, $color1); $color2 = imagecolorsforindex($this->image, $color2); $steps = $this->width; $r1 = ($color1['red'] - $color2['red']) / $steps; $g1 = ($color1['green'] - $color2['green']) / $steps; $b1 = ($color1['blue'] - $color2['blue']) / $steps; $x1 = 0; $y1 =& $i; $x2 = $this->width; $y2 =& $i; for ($i = 0; $i <= $steps; $i++) { $r2 = $color1['red'] - floor($i * $r1); $g2 = $color1['green'] - floor($i * $g1); $b2 = $color1['blue'] - floor($i * $b1); $color = imagecolorallocate($this->image, $r2, $g2, $b2); imageline($this->image, $x1, $y1, $x2, $y2, $color); } for ($i = 0, $count = mt_rand(10, 20); $i < $count; $i++) { $color = imagecolorallocatealpha($this->image, mt_rand(20, 255), mt_rand(20, 255), mt_rand(100, 255), mt_rand(80, 120)); imageline($this->image, mt_rand(0, $this->width), 0, mt_rand(0, $this->width), $this->height, $color); } } return $this->image; } public function GenerateImage($phrase = null) { $image = $this->CreateImage(); $phrase == null && $phrase = $this->Phrase(); $fontsize = min($this->width, $this->height * 2) / (strlen($phrase)); $spacing = (integer) ($this->width * 0.9 / strlen($phrase)); is_dir($this->fonts) && $this->fonts = glob($this->fonts.'*.{ttf,otf}', GLOB_BRACE); for ($i = 0, $strlen = strlen($phrase); $i < $strlen; $i++) { $font = $this->fonts[array_rand($this->fonts)]; $color = imagecolorallocate($image, mt_rand(0, 160), mt_rand(0, 160), mt_rand(0, 160)); $angle = mt_rand(-30, 30); $size = $fontsize / 12 * mt_rand(12, 14); $box = imageftbbox($size, $angle, $font, $phrase[$i]); $x = $spacing / 4 + $i * $spacing + 2; $y = $this->height / 2 + ($box[2] - $box[5]) / 4; imagefttext($image, $size, $angle, $x, $y, $color, $font, $phrase[$i]); } $this->image = $image; $_SESSION['PAOPHP_CAPTCHA_KEY'] = $phrase; return $this->image; } public static function Verify($str = null) { $key = $_SESSION['PAOPHP_CAPTCHA_KEY']; if(!empty($_SESSION['PAOPHP_CAPTCHA_KEY']) && !empty($str) && strtolower($str) === strtolower($key)){ $_SESSION['PAOPHP_CAPTCHA_KEY'] = null; unset($_SESSION['PAOPHP_CAPTCHA_KEY']); return true; }else{ return false; } } }