php 学习整理
1、页面提交信息过虑方法
function adds($string, $force = 0) { !defined('MAGIC_QUOTES_GPC') && define('MAGIC_QUOTES_GPC', get_magic_quotes_gpc()); if(!MAGIC_QUOTES_GPC || $force) { if(is_array($string)) { foreach($string as $key => $val) { $string[$key] = adds($val, $force); } } else { $string = addslashes($string); } } $words = array('SELECT ', 'INSERT ', 'UPDATE ', 'DELETE ', 'CREATE ', 'DROP ', 'RELOAD ', 'SHUTDOWN', 'PROCESS', 'REFERENCES', 'ALTER', 'SHOW DATABASES', 'CREATE TEMPORARY TABLES', 'LOCK TABLES', 'REPLICATION SLAVE', 'REPLICATION CLIENT', 'CREATE VIEW', 'SHOW VIEW', 'CREATE ROUTINE', 'ALTER ROUTINE', 'EXECUTE'); foreach($words as $wd) { if(stristr($string,$wd)) { exit('Access Denied'); } } $search = array('/union(\s*(\/\*.*\*\/)?\s*)+select/i', '/load_file(\s*(\/\*.*\*\/)?\s*)+\(/i', '/into(\s*(\/\*.*\*\/)?\s*)+outfile/i','/;/','/%/'); $replace = array('union select', 'load_file (', 'into outfile','\;','\%'); return preg_replace($search,$replace,$string); }
2、跨站脚本的过滤RemoveXss函数
function RemoveXSS($val) { // remove all non-printable characters. CR(0a) and LF(0b) and TAB(9) are allowed // this prevents some character re-spacing such as <java\0script> // note that you have to handle splits with \n, \r, and \t later since they *are* allowed in some inputs $val = preg_replace('/([\x00-\x08,\x0b-\x0c,\x0e-\x19])/', '', $val); // straight replacements, the user should never need these since they're normal characters // this prevents like <IMG SRC=@avascript:alert('XSS')> $search = 'abcdefghijklmnopqrstuvwxyz'; $search .= 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'; $search .= '1234567890!@#$%^&*()'; $search .= '~`";:?+/={}[]-_|\'\\'; for ($i = 0; $i < strlen($search); $i++) { // ;? matches the ;, which is optional // 0{0,7} matches any padded zeros, which are optional and go up to 8 chars // @ @ search for the hex values $val = preg_replace('/(&#[xX]0{0,8}'.dechex(ord($search[$i])).';?)/i', $search[$i], $val); // with a ; // @ @ 0{0,7} matches '0' zero to seven times $val = preg_replace('/(�{0,8}'.ord($search[$i]).';?)/', $search[$i], $val); // with a ; } // now the only remaining whitespace attacks are \t, \n, and \r $ra1 = Array('javascript', 'vbscript', 'expression', 'applet', 'meta', 'xml', 'blink', 'link', 'style', 'script', 'embed', 'object', 'iframe', 'frame', 'frameset', 'ilayer', 'layer', 'bgsound', 'title', 'base'); $ra2 = Array('onabort', 'onactivate', 'onafterprint', 'onafterupdate', 'onbeforeactivate', 'onbeforecopy', 'onbeforecut', 'onbeforedeactivate', 'onbeforeeditfocus', 'onbeforepaste', 'onbeforeprint', 'onbeforeunload', 'onbeforeupdate', 'onblur', 'onbounce', 'oncellchange', 'onchange', 'onclick', 'oncontextmenu', 'oncontrolselect', 'oncopy', 'oncut', 'ondataavailable', 'ondatasetchanged', 'ondatasetcomplete', 'ondblclick', 'ondeactivate', 'ondrag', 'ondragend', 'ondragenter', 'ondragleave', 'ondragover', 'ondragstart', 'ondrop', 'onerror', 'onerrorupdate', 'onfilterchange', 'onfinish', 'onfocus', 'onfocusin', 'onfocusout', 'onhelp', 'onkeydown', 'onkeypress', 'onkeyup', 'onlayoutcomplete', 'onload', 'onlosecapture', 'onmousedown', 'onmouseenter', 'onmouseleave', 'onmousemove', 'onmouseout', 'onmouseover', 'onmouseup', 'onmousewheel', 'onmove', 'onmoveend', 'onmovestart', 'onpaste', 'onpropertychange', 'onreadystatechange', 'onreset', 'onresize', 'onresizeend', 'onresizestart', 'onrowenter', 'onrowexit', 'onrowsdelete', 'onrowsinserted', 'onscroll', 'onselect', 'onselectionchange', 'onselectstart', 'onstart', 'onstop', 'onsubmit', 'onunload'); $ra = array_merge($ra1, $ra2); $found = true; // keep replacing as long as the previous round replaced something while ($found == true) { $val_before = $val; for ($i = 0; $i < sizeof($ra); $i++) { $pattern = '/'; for ($j = 0; $j < strlen($ra[$i]); $j++) { if ($j > 0) { $pattern .= '('; $pattern .= '(&#[xX]0{0,8}([9ab]);)'; $pattern .= '|'; $pattern .= '|(�{0,8}([9|10|13]);)'; $pattern .= ')*'; } $pattern .= $ra[$i][$j]; } $pattern .= '/i'; $replacement = substr($ra[$i], 0, 2).'<x>'.substr($ra[$i], 2); // add in <> to nerf the tag $val = preg_replace($pattern, $replacement, $val); // filter out the hex tags if ($val_before == $val) { // no replacements were made, so exit the loop $found = false; } } } return $val; }
3、php正则匹配中文
preg_match ( '/^[\x{0391}-\x{FFE5}]{2,6}$/u', $realname )
4、php实现身份证号与姓名验证
/*--------------- 身份证校验接口 ---------------*/ define('idcard_interface','http://ngs.nciic.net.cn/nciic_ws/services/NciicServices?wsdl'); define('idcard_inLicense','?v>xB::^9*3;V]-T_=CZ)FSKJ3?c;t?g3o?h?o?[7_M2K7^X>#TJ/DSB$t?oUlUe@s?o?z-;S$?vE/JvBxa3PpBkM.?x?vQbIyFvXaCaa _tAg?x?vNn[;Fh`3<c?s1/b)4v;v?v<;NnGh`8An?x6a\na8UiTj3f1n3sc_:c>h?v?jVhEfIzQq?x?vCt[;^eHd?x3Q9U1S3$JJ%&P2P:9a?f?hd)?.?v*nOqYkRuRw;n?vSv[yNo^fEl\;NiUk2dMv?g5b>h&e?g?va{@jNhVnFqNtDs\g`38m$rKcLi?j?x?v`}[g^f^uNiIz\l`5_j?x?vSzJh_fcN[lBx[pUi@gEvG.?x8bWk^/GgVl8m&q?h?a?s*w:qJd@eGga4?x?v8eWbZ[cXLyZ;EmPqXkYeEvAg?x<z?j^lb0LhL/F.AlUj2d'); function check_idcard_from_interface($card,$name,$flag =0) { //检查身份证接口,$flag 决定返回结果类型 // SoapClient是php5的扩展，实现简单对象访问协议， // 简单对象访问协议（SOAP）是一种轻量的、简单的、基于 XML 的协议，它被设计成在 WEB 上交换结构化的和固化的信息。 // PHP5中的这个SOAP扩展目的是为了实现PHP对Web services的支持。与其它实现PHP对Web services的支持的方法不同， // SOAP扩展是用C写的，因此它比其它方法具有速度优势。 $client = new SoapClient( idcard_interface, array('trace' => 1 )); $params['inLicense'] = idcard_inLicense; $params['inConditions'] = "<?xml version=\"1.0\" encoding=\"UTF-8\" ?><ROWS><INFO><SBM>武神世纪</SBM></INFO><ROW><GMSFHM>公民身份号码</GMSFHM><XM>姓名</XM></ROW><ROW FSD=\"**\" YWLX=\"**\" > <GMSFHM>{$card}</GMSFHM><XM>{$name}</XM></ROW></ROWS>"; $result = -1; try{ $something = $client->nciicCheck($params); $result = $something->out; if( strstr($result,'<result_xm>一致</result_xm>') ){ $result = 2; //身份证和姓名匹配 }elseif( strstr($result,'<result_gmsfhm>一致</result_gmsfhm>') ){ $result = -3;//身份证合法 }else{ $result = -4;//身份证不合法 } }catch (Exception $e){ $result = -1; } if( $flag==1 ){ if($result == 2){ $result =1; }elseif($result != -1){ $result =0; } } return $result; } $card = "验证的身份证号"; $name = "验证的姓名"; $checkResult = check_idcard_from_interface($card,$name); echo $checkResult;
5、php写系统日志
$facility = LOG_LOCAL5; $priority = LOG_USER|LOG_INFO; $ident = "testsyslog"; $option = LOG_PID; openlog($ident,$option,$facility); syslog($priority,"syslog test message generated in program \n"); closelog();
调用的是操作系统的日志函数，详细可参考：http://www.cnblogs.com/wangkangluo1/archive/2012/05/30/2526011.html
6、产生随机码
//产生随机码 function CreateRandomCode() { $code = time () * 3 * mt_rand ( 1000, 9999 ); return sha1 ( $code ); }
7、校验请求来源
/** * @name CheckRef 校验来源 * @param string $str * @return boolean */ function CheckRef() { if(!empty($_SERVER['HTTP_REFERER'])){ $host = (isset($_SERVER['HTTPS']) && strtolower($_SERVER['HTTPS']) !== 'off' ? 'https' : 'http').'://'.$_SERVER['HTTP_HOST']; $url = parse_url($_SERVER['HTTP_REFERER']); if( $url['scheme'].'://'.$url['host'] == $host) return TRUE; } return FALSE; }
8、截取中文字符串方法
function cutstr($string, $length, $dot = ' ...', $charset = 'utf-8'){ if(strlen($string) <= $length) { return $string; } $string = str_replace(array('&', '"', '<', '>'), array('&', '"', '<', '>'), $string); $strcut = ''; if(strtolower($charset) == 'utf-8') { $n = $tn = $noc = 0; while($n < strlen($string)) { $t = ord($string[$n]); if($t == 9 || $t == 10 || (32 <= $t && $t <= 126)) { $tn = 1; $n++; $noc++; } elseif(194 <= $t && $t <= 223) { $tn = 2; $n += 2; $noc += 2; } elseif(224 <= $t && $t < 239) { $tn = 3; $n += 3; $noc += 2; } elseif(240 <= $t && $t <= 247) { $tn = 4; $n += 4; $noc += 2; } elseif(248 <= $t && $t <= 251) { $tn = 5; $n += 5; $noc += 2; } elseif($t == 252 || $t == 253) { $tn = 6; $n += 6; $noc += 2; } else { $n++; } if($noc >= $length) { break; } } if($noc > $length) { $n -= $tn; } $strcut = substr($string, 0, $n); } else { for($i = 0; $i < $length; $i++) { $strcut .= ord($string[$i]) > 127 ? $string[$i].$string[++$i] : $string[$i]; } } $strcut = str_replace(array('&', '"', '<', '>'), array('&', '"', '<', '>'), $strcut); //return $strcut.$dot; return $strcut; }
9、加密码解密码函数，可用以cookie加密
define('_PSW_ENCODE','aaaaaa');//定义一个用来加密码的用的串
function encode($string) { $iv = mcrypt_create_iv ( mcrypt_get_iv_size ( MCRYPT_3DES, MCRYPT_MODE_ECB ), MCRYPT_RAND ); $encode = base64_encode ( @mcrypt_encrypt ( MCRYPT_3DES, _PSW_ENCODE, $string, MCRYPT_MODE_ECB, $iv ) ); return $encode; } function decode($string) { $decode = @mcrypt_decrypt ( MCRYPT_3DES, _PSW_ENCODE, base64_decode ( $string ), MCRYPT_MODE_ECB ); return $decode; }
10、获取ip，ip转成整型，整型转成ip
//获取ip function getRemoteAddr() { if (getenv ( "HTTP_CLIENT_IP" ) && strcasecmp ( getenv ( "HTTP_CLIENT_IP" ), "unknown" )) { $ip = getenv ( "HTTP_CLIENT_IP" ); } else if (getenv ( "HTTP_X_FORWARDED_FOR" ) && strcasecmp ( getenv ( "HTTP_X_FORWARDED_FOR" ), "unknown" )) { $ip = getenv ( "HTTP_X_FORWARDED_FOR" ); } else if (getenv ( "REMOTE_ADDR" ) && strcasecmp ( getenv ( "REMOTE_ADDR" ), "unknown" )) { $ip = getenv ( "REMOTE_ADDR" ); } else if (isset ( $_SERVER ['REMOTE_ADDR'] ) && $_SERVER ['REMOTE_ADDR'] && strcasecmp ( $_SERVER ['REMOTE_ADDR'], "unknown" )) { $ip = $_SERVER ['REMOTE_ADDR']; } else { $ip = ''; } return $ip; } //整型转ip function longtoip( $ip ) { return long2ip( $ip + 2147483648 ); } //ip转整型，有可能为负值 function iptolong( $ip ) { return sprintf( "%u", ip2long($ip) ) - 2147483648; }
11、输出分页方法
1 /* 2 currentPage:当前页 3 totalPage:总页数 4 url：分页连接 5 count:数据总条数 6 halfPer：分布标签中当前页的两边显示多少项。 7 */ 8 function adminpage($currentPage,$totalPage,$url,$count=0,$halfPer=5) 9 { 10 $total=$totalPage; 11 $url = $url.'&page'; 12 $currentPage=($currentPage<1)?1:$currentPage; 13 $currentPage=($currentPage>$totalPage)?$totalPage:$currentPage; 14 $re="记录总数：$count 条 "; 15 $re .= ( $currentPage > 1 ) 16 ? " <a href=\"$url=1\">首页</a> \n <a href=\"$url=".($currentPage-1)."\">上一页</a> \n" 17 : " 首页 \n"; 18 19 for ( $i = $currentPage - $halfPer,$i >= 1 || $i = 1 ,$j = $currentPage + $halfPer, $j < $totalPage || $j = $totalPage;$i <= $j ;$i++ ) 20 { 21 $re .= ($i == $currentPage)? " <b class=currentPage> $i </b> \n" : " <a href=\"$url=$i\"> $i </a> \n"; 22 } 23 $re .= ( $currentPage < $total ) ? " <a href=\"$url=" . ( $currentPage + 1 ) . "\">下一页</a>\n<a href=\"$url=" . ( $total )."\">尾页</a>\n" : " 尾页 \n"; 24 return $re; 25 }
