{"id":23183,"date":"2024-11-21T08:44:07","date_gmt":"2024-11-21T00:44:07","guid":{"rendered":"https:\/\/fwq.ai\/blog\/23183\/"},"modified":"2024-11-21T08:44:07","modified_gmt":"2024-11-21T00:44:07","slug":"thinkphp%e9%aa%8c%e8%af%81%e7%a0%81%e6%8f%92%e4%bb%b6%e5%a6%82%e4%bd%95%e5%ae%89%e8%a3%85","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/23183\/","title":{"rendered":"ThinkPHP\u9a8c\u8bc1\u7801\u63d2\u4ef6\u5982\u4f55\u5b89\u88c5"},"content":{"rendered":"<\/p>\n<p>\u6211\u4eec\u9996\u5148\u9700\u6253\u5f00ThinkPHP\u5b98\u7f51\uff0c\u5e76\u641c\u7d22\u4e0e\u9a8c\u8bc1\u7801\u76f8\u5173\u7684\u5185\u5bb9\u3002\u6211\u4eec\u53ef\u4ee5\u5728\u641c\u7d22\u7ed3\u679c\u4e2d\u627e\u5230\u4e00\u4e9b\u6587\u6863\u4ecb\u7ecd\u9a8c\u8bc1\u7801\u4ee5\u53ca\u5df2\u7ecf\u5f00\u53d1\u597d\u7684\u9a8c\u8bc1\u7801\u63d2\u4ef6\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u4e24\u79cd\u9a8c\u8bc1\u7801\u96c6\u6210\u65b9\u5f0f\uff1a\u4f7f\u7528\u5b98\u65b9\u63d0\u4f9b\u7684\u9a8c\u8bc1\u7801\u63d2\u4ef6\u548c\u624b\u52a8\u7f16\u5199\u4ee3\u7801\u3002<\/p>\n<p>1.\u4f7f\u7528\u5b98\u65b9\u9a8c\u8bc1\u7801\u63d2\u4ef6<\/p>\n<p>\u5728\u5b98\u65b9\u6587\u6863\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u627e\u5230ThinkPHP\u9a8c\u8bc1\u7801\u63d2\u4ef6\u7684\u4f7f\u7528\u65b9\u6cd5\u3002\u4f7f\u7528\u5b98\u65b9\u63d2\u4ef6\u9700\u8981\u6267\u884c\u4ee5\u4e0b\u6b65\u9aa4\uff1a<\/p>\n<p>1.1\u5728ThinkPHP\u6846\u67b6\u7684extend\u76ee\u5f55\u4e0b\u65b0\u5efa\u4e00\u4e2aVerify\u6587\u4ef6\u5939\uff0c\u5e76\u5c06\u4e0b\u8f7d\u597d\u7684\u9a8c\u8bc1\u7801\u63d2\u4ef6\u653e\u5165\u5176\u4e2d\u3002<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<p>1.2\u67e5\u770bThinkPHP\u914d\u7f6e\u6587\u4ef6\uff0c\u5c06\u9a8c\u8bc1\u7801\u914d\u7f6e\u9879\u6307\u5411\u521a\u653e\u7f6e\u9a8c\u8bc1\u7801\u63d2\u4ef6\u7684\u6587\u4ef6\u5939\u3002\u5177\u4f53\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<pre>'verify'&nbsp;=&amp;gt;[\n&nbsp;&nbsp;&nbsp;&nbsp;\/\/\u4f7f\u7528\u4e2d\u6587\u9a8c\u8bc1\u7801\n&nbsp;&nbsp;&nbsp;&nbsp;'useZh'=&amp;gt;false,\n&nbsp;&nbsp;&nbsp;&nbsp;\/\/\u9a8c\u8bc1\u7801\u5b57\u4f53\u5927\u5c0f(px)\n&nbsp;&nbsp;&nbsp;&nbsp;'fontSize'=&amp;gt;25,\n&nbsp;&nbsp;&nbsp;&nbsp;\/\/\u9a8c\u8bc1\u7801\u4f4d\u6570\n&nbsp;&nbsp;&nbsp;&nbsp;'length'=&amp;gt;5,\n&nbsp;&nbsp;&nbsp;&nbsp;\/\/\u9a8c\u8bc1\u7801\u56fe\u7247\u5bbd\u5ea6(\u50cf\u7d20)\n&nbsp;&nbsp;&nbsp;&nbsp;'imageW'=&amp;gt;0,\n&nbsp;&nbsp;&nbsp;&nbsp;\/\/\u9a8c\u8bc1\u7801\u56fe\u7247\u9ad8\u5ea6(\u50cf\u7d20)\n&nbsp;&nbsp;&nbsp;&nbsp;'imageH'=&amp;gt;0,\n&nbsp;&nbsp;&nbsp;&nbsp;\/\/\u5173\u95ed\u9a8c\u8bc1\u7801\u6742\u70b9&nbsp;\n&nbsp;&nbsp;&nbsp;&nbsp;'useNoise'=&amp;gt;true,\n&nbsp;&nbsp;&nbsp;&nbsp;\/\/\u80cc\u666f\u989c\u8272(16\u8fdb\u5236\u8272\u503c)\n&nbsp;&nbsp;&nbsp;&nbsp;'bg'=&amp;gt;[243,&nbsp;251,&nbsp;254],\n&nbsp;&nbsp;&nbsp;&nbsp;\/\/\u9700\u8981\u5305\u542b\u7684\u5b57\u7b26\u96c6\u5408\n&nbsp;&nbsp;&nbsp;&nbsp;'codeSet'=&amp;gt;'0123456789',\n&nbsp;&nbsp;&nbsp;&nbsp;\/\/\u9a8c\u8bc1\u7801\u5b57\u7b26\u95f4\u9694(px)\n&nbsp;&nbsp;&nbsp;&nbsp;'seKey'=&amp;gt;\"ThinkPHP.CN_\",\/\/\u5bc6\u94a5\n&nbsp;&nbsp;&nbsp;&nbsp;...\n],<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u6839\u636e\u5b9e\u9645\u60c5\u51b5\uff0c\u53ef\u4ee5\u8bbe\u7f6e\u53c2\u6570imageW\u548cimageH\u3002\u5982\u679c\u4e0d\u8bbe\u7f6e\uff0c\u5219\u9ed8\u8ba4\u5c06\u9a8c\u8bc1\u7801\u56fe\u7247\u7684\u5927\u5c0f\u4e0e\u8f93\u51fa\u56fe\u7247\u7684\u5927\u5c0f\u76f8\u540c\u3002<\/p>\n<p>1.3\u5728\u9700\u8981\u8f93\u51fa\u9a8c\u8bc1\u7801\u7684\u5730\u65b9\uff0c\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\u5373\u53ef\u96c6\u6210\u5b98\u65b9\u9a8c\u8bc1\u7801\u63d2\u4ef6\uff1a<\/p>\n<pre>$img&nbsp;=&nbsp;(&nbsp;new&nbsp;ThinkVerify())-&amp;gt;entry();&nbsp;&nbsp;\necho&nbsp;$img;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>2.\u624b\u52a8\u7f16\u5199\u9a8c\u8bc1\u7801\u751f\u6210\u4ee3\u7801<\/p>\n<p>\u9664\u4e86\u4f7f\u7528\u5b98\u65b9\u63d2\u4ef6\uff0c\u6211\u4eec\u8fd8\u53ef\u4ee5\u624b\u52a8\u7f16\u5199\u9a8c\u8bc1\u7801\u751f\u6210\u4ee3\u7801\u3002\u5177\u4f53\u6d41\u7a0b\u5982\u4e0b\uff1a<\/p>\n<p>\u9996\u5148\uff0c\u6211\u4eec\u9700\u8981\u521b\u5efa\u4e00\u4e2a\u9a8c\u8bc1\u7801\u7c7b\uff0c\u5176\u4e2d\u5305\u542b\u751f\u6210\u548c\u8f93\u51fa\u9a8c\u8bc1\u7801\u7684\u65b9\u6cd5\u3002\u4ee5\u4e0b\u4ee3\u7801\u4e3a\u624b\u7f16\u9a8c\u8bc1\u7801\u7c7b\u7684\u91cd\u8981\u90e8\u5206\uff1a<\/p>\n<pre>class&nbsp;VerifyCode\n{\n&nbsp;&nbsp;&nbsp;&nbsp;\/\/\u9a8c\u8bc1\u7801\u5b57\u7b26\u957f\u5ea6\n&nbsp;&nbsp;&nbsp;&nbsp;private&nbsp;$length&nbsp;=&nbsp;4;\n\n&nbsp;&nbsp;&nbsp;&nbsp;\/\/\u9a8c\u8bc1\u7801\u5b57\u7b26\u6570\u7ec4\n&nbsp;&nbsp;&nbsp;&nbsp;private&nbsp;$codes&nbsp;=&nbsp;[];\n\n&nbsp;&nbsp;&nbsp;&nbsp;\/\/\u9a8c\u8bc1\u7801\u751f\u6210\n&nbsp;&nbsp;&nbsp;&nbsp;public&nbsp;function&nbsp;generate()\n&nbsp;&nbsp;&nbsp;&nbsp;{&nbsp;&nbsp;&nbsp;\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\/\/\u751f\u6210\u5b57\u7b26\u6570\u7ec4\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$this-&amp;gt;codes&nbsp;=&nbsp;[];\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;for($i&nbsp;=&nbsp;0;&nbsp;$i&nbsp;length;&nbsp;++$i)&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$this-&amp;gt;codes[]&nbsp;=&nbsp;chr(mt_rand(48,&nbsp;57));\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}\n\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\/\/\u4fdd\u5b58\u5b57\u7b26\u6570\u7ec4\u5230session\u4e2d\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;session('verifycode',&nbsp;implode('',&nbsp;$this-&amp;gt;codes));\n\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\/\/\u5f00\u542f\u8f93\u51fa\u7f13\u5b58\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;ob_start();\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;header('Content-Type:\/image\/png');\n\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\/\/\u521b\u5efa\u9a8c\u8bc1\u7801\u56fe\u7247\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$image&nbsp;=&nbsp;imagecreate(100,&nbsp;40);\n\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\/\/\u8bbe\u7f6e\u753b\u5e03\u80cc\u666f\u989c\u8272&nbsp;\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$bg_color&nbsp;=&nbsp;imagecolorallocate($image,&nbsp;238,&nbsp;238,&nbsp;238);&nbsp;\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;imagefill($image,&nbsp;0,&nbsp;0,&nbsp;$bg_color);\n\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\/\/\u7ed8\u5236\u9a8c\u8bc1\u7801\u5b57\u7b26\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;for($i&nbsp;=&nbsp;0;&nbsp;$i&nbsp;length;&nbsp;++$i)&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$font_file&nbsp;=&nbsp;'\/usr\/share\/fonts\/truetype\/dejavu\/DejaVuSans.ttf';\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$text_color&nbsp;=&nbsp;imagecolorallocate(\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$image,&nbsp;mt_rand(0,&nbsp;150),&nbsp;mt_rand(0,&nbsp;150),&nbsp;mt_rand(0,&nbsp;150));\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;imagettftext($image,&nbsp;24,&nbsp;mt_rand(-20,&nbsp;20),&nbsp;5&nbsp;+&nbsp;$i&nbsp;*&nbsp;25,&nbsp;30,&nbsp;\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$text_color,&nbsp;$font_file,&nbsp;$this-&amp;gt;codes[$i]);\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}\n\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\/\/\u8f93\u51fa\u9a8c\u8bc1\u7801\u56fe\u7247\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;imagepng($image);\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;imagedestroy($image);\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$img&nbsp;=&nbsp;ob_get_contents();\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;ob_end_clean();\n\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return&nbsp;$img;\n&nbsp;&nbsp;&nbsp;&nbsp;}\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>2.2\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\u5373\u53ef\u5728\u9a8c\u8bc1\u9700\u8981\u9a8c\u8bc1\u7801\u7684\u5730\u65b9\u751f\u6210\u5e76\u8f93\u51fa\u9a8c\u8bc1\u7801\uff1a<\/p>\n<pre>$vf&nbsp;=&nbsp;new&nbsp;VerifyCode();\necho&nbsp;$vf-&amp;gt;generate();<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fThinkPHP\u9a8c\u8bc1\u7801\u63d2\u4ef6\u5982\u4f55\u5b89\u88c5\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6211\u4eec\u9996\u5148\u9700\u6253\u5f00ThinkPHP\u5b98\u7f51\uff0c\u5e76\u641c\u7d22\u4e0e\u9a8c\u8bc1\u7801\u76f8\u5173\u7684\u5185\u5bb9\u3002\u6211\u4eec\u53ef\u4ee5\u5728\u641c\u7d22\u7ed3\u679c\u4e2d\u627e\u5230\u4e00\u4e9b\u6587\u6863\u4ecb\u7ecd\u9a8c\u8bc1\u7801\u4ee5\u53ca\u5df2\u7ecf\u5f00\u53d1\u597d\u7684\u9a8c\u8bc1\u7801\u63d2\u4ef6\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u4e24\u79cd\u9a8c\u8bc1\u7801\u96c6\u6210\u65b9\u5f0f\uff1a\u4f7f\u7528\u5b98\u65b9\u63d0\u4f9b\u7684\u9a8c\u8bc1\u7801\u63d2\u4ef6\u548c\u624b\u52a8\u7f16\u5199\u4ee3\u7801\u3002 1.\u4f7f\u7528\u5b98\u65b9\u9a8c\u8bc1\u7801\u63d2\u4ef6 \u5728\u5b98\u65b9\u6587\u6863\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u627e\u5230ThinkPHP\u9a8c\u8bc1\u7801\u63d2\u4ef6\u7684\u4f7f\u7528\u65b9\u6cd5\u3002\u4f7f\u7528\u5b98\u65b9\u63d2\u4ef6\u9700\u8981\u6267\u884c\u4ee5\u4e0b\u6b65\u9aa4\uff1a 1.1\u5728ThinkPHP\u6846\u67b6\u7684extend\u76ee\u5f55\u4e0b\u65b0\u5efa\u4e00\u4e2aVerify\u6587\u4ef6\u5939\uff0c\u5e76\u5c06\u4e0b\u8f7d\u597d\u7684\u9a8c\u8bc1\u7801\u63d2\u4ef6\u653e\u5165\u5176\u4e2d\u3002 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b 1.2\u67e5\u770bThinkPHP\u914d\u7f6e\u6587\u4ef6\uff0c\u5c06\u9a8c\u8bc1\u7801\u914d\u7f6e\u9879\u6307\u5411\u521a\u653e\u7f6e\u9a8c\u8bc1\u7801\u63d2\u4ef6\u7684\u6587\u4ef6\u5939\u3002\u5177\u4f53\u4ee3\u7801\u5982\u4e0b\uff1a &#8216;verify&#8217;&nbsp;=&amp;gt;[ &nbsp;&nbsp;&nbsp;&nbsp;\/\/\u4f7f\u7528\u4e2d\u6587\u9a8c\u8bc1\u7801 &nbsp;&nbsp;&nbsp;&nbsp;&#8216;useZh&#8217;=&amp;gt;false, &nbsp;&nbsp;&nbsp;&nbsp;\/\/\u9a8c\u8bc1\u7801\u5b57\u4f53\u5927\u5c0f(px) &nbsp;&nbsp;&nbsp;&nbsp;&#8216;fontSize&#8217;=&amp;gt;25, &nbsp;&nbsp;&nbsp;&nbsp;\/\/\u9a8c\u8bc1\u7801\u4f4d\u6570 &nbsp;&nbsp;&nbsp;&nbsp;&#8216;length&#8217;=&amp;gt;5, &nbsp;&nbsp;&nbsp;&nbsp;\/\/\u9a8c\u8bc1\u7801\u56fe\u7247\u5bbd\u5ea6(\u50cf\u7d20) &nbsp;&nbsp;&nbsp;&nbsp;&#8216;imageW&#8217;=&amp;gt;0, &nbsp;&nbsp;&nbsp;&nbsp;\/\/\u9a8c\u8bc1\u7801\u56fe\u7247\u9ad8\u5ea6(\u50cf\u7d20) &nbsp;&nbsp;&nbsp;&nbsp;&#8216;imageH&#8217;=&amp;gt;0, &nbsp;&nbsp;&nbsp;&nbsp;\/\/\u5173\u95ed\u9a8c\u8bc1\u7801\u6742\u70b9&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&#8216;useNoise&#8217;=&amp;gt;true, &nbsp;&nbsp;&nbsp;&nbsp;\/\/\u80cc\u666f\u989c\u8272(16\u8fdb\u5236\u8272\u503c) &nbsp;&nbsp;&nbsp;&nbsp;&#8216;bg&#8217;=&amp;gt;[243,&nbsp;251,&nbsp;254], &nbsp;&nbsp;&nbsp;&nbsp;\/\/\u9700\u8981\u5305\u542b\u7684\u5b57\u7b26\u96c6\u5408 &nbsp;&nbsp;&nbsp;&nbsp;&#8216;codeSet&#8217;=&amp;gt;&#8217;0123456789&#8217;, &nbsp;&nbsp;&nbsp;&nbsp;\/\/\u9a8c\u8bc1\u7801\u5b57\u7b26\u95f4\u9694(px) &nbsp;&nbsp;&nbsp;&nbsp;&#8216;seKey&#8217;=&amp;gt;&#8221;ThinkPHP.CN_&#8221;,\/\/\u5bc6\u94a5 &nbsp;&nbsp;&nbsp;&nbsp;&#8230; ], \u767b\u5f55\u540e\u590d\u5236 \u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u6839\u636e\u5b9e\u9645\u60c5\u51b5\uff0c\u53ef\u4ee5\u8bbe\u7f6e\u53c2\u6570imageW\u548cimageH\u3002\u5982\u679c\u4e0d\u8bbe\u7f6e\uff0c\u5219\u9ed8\u8ba4\u5c06\u9a8c\u8bc1\u7801\u56fe\u7247\u7684\u5927\u5c0f\u4e0e\u8f93\u51fa\u56fe\u7247\u7684\u5927\u5c0f\u76f8\u540c\u3002 1.3\u5728\u9700\u8981\u8f93\u51fa\u9a8c\u8bc1\u7801\u7684\u5730\u65b9\uff0c\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\u5373\u53ef\u96c6\u6210\u5b98\u65b9\u9a8c\u8bc1\u7801\u63d2\u4ef6\uff1a $img&nbsp;=&nbsp;(&nbsp;new&nbsp;ThinkVerify())-&amp;gt;entry();&nbsp;&nbsp; echo&nbsp;$img; \u767b\u5f55\u540e\u590d\u5236 2.\u624b\u52a8\u7f16\u5199\u9a8c\u8bc1\u7801\u751f\u6210\u4ee3\u7801 \u9664\u4e86\u4f7f\u7528\u5b98\u65b9\u63d2\u4ef6\uff0c\u6211\u4eec\u8fd8\u53ef\u4ee5\u624b\u52a8\u7f16\u5199\u9a8c\u8bc1\u7801\u751f\u6210\u4ee3\u7801\u3002\u5177\u4f53\u6d41\u7a0b\u5982\u4e0b\uff1a \u9996\u5148\uff0c\u6211\u4eec\u9700\u8981\u521b\u5efa\u4e00\u4e2a\u9a8c\u8bc1\u7801\u7c7b\uff0c\u5176\u4e2d\u5305\u542b\u751f\u6210\u548c\u8f93\u51fa\u9a8c\u8bc1\u7801\u7684\u65b9\u6cd5\u3002\u4ee5\u4e0b\u4ee3\u7801\u4e3a\u624b\u7f16\u9a8c\u8bc1\u7801\u7c7b\u7684\u91cd\u8981\u90e8\u5206\uff1a class&nbsp;VerifyCode { &nbsp;&nbsp;&nbsp;&nbsp;\/\/\u9a8c\u8bc1\u7801\u5b57\u7b26\u957f\u5ea6 &nbsp;&nbsp;&nbsp;&nbsp;private&nbsp;$length&nbsp;=&nbsp;4; &nbsp;&nbsp;&nbsp;&nbsp;\/\/\u9a8c\u8bc1\u7801\u5b57\u7b26\u6570\u7ec4 &nbsp;&nbsp;&nbsp;&nbsp;private&nbsp;$codes&nbsp;=&nbsp;[]; &nbsp;&nbsp;&nbsp;&nbsp;\/\/\u9a8c\u8bc1\u7801\u751f\u6210 &nbsp;&nbsp;&nbsp;&nbsp;public&nbsp;function&nbsp;generate() &nbsp;&nbsp;&nbsp;&nbsp;{&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\/\/\u751f\u6210\u5b57\u7b26\u6570\u7ec4 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$this-&amp;gt;codes&nbsp;=&nbsp;[]; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;for($i&nbsp;=&nbsp;0;&nbsp;$i&nbsp;length;&nbsp;++$i)&nbsp;{ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$this-&amp;gt;codes[]&nbsp;=&nbsp;chr(mt_rand(48,&nbsp;57)); &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;} &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\/\/\u4fdd\u5b58\u5b57\u7b26\u6570\u7ec4\u5230session\u4e2d &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;session(&#8216;verifycode&#8217;,&nbsp;implode(&#8221;,&nbsp;$this-&amp;gt;codes)); &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\/\/\u5f00\u542f\u8f93\u51fa\u7f13\u5b58 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;ob_start(); &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;header(&#8216;Content-Type:\/image\/png&#8217;); 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