php常用函数

(1)php判断检测一个数组里有没有重复的值if (count($array) != count(array_unique($array))) { ???????????echo ‘该数组有重复值‘; ??} ?(2)处理从前端传来的json数据public function dealJson($param){ ???????return json_decode(htmlspecialchars_decode($param), true);}(3)字符串转条件public static function str2where($condition) { ???????if (self::check_condition($condition)) { ???????????$condition = preg_replace(‘/^(and|or)/i‘, ‘‘, $condition); ???????????$condition = str_replace(array(‘--‘, ‘__‘), array(‘ ‘, "‘ "), $condition); ???????????$old_char = array(‘ ne ‘, ‘ eq ‘, ‘ lt ‘, ‘ gt ‘, ‘ le ‘, ‘ ge ‘, ‘ ct ‘, ‘ nct ‘); ???????????$new_char = array(" != ‘", " = ‘", " < ‘", " > ‘", " <= ‘", " >= ‘", " like ‘%", " not like ‘%"); ???????????$condition = str_replace($old_char, $new_char, $condition); ???????????$condition = preg_replace("/\s+(like\s+‘[^‘]+)(‘|$)/i", " $1%$2", $condition); ???????????if ($condition != ‘‘) ???????????????$condition .= "‘"; ???????????return $condition; ???????} ???????return null;}(4)获取汉字首字母public function getFirstCharter($str){ ???????if (empty($str)) { ???????????return ‘‘; ???????} ???????$fchar = ord($str{0}); ???????if ($fchar >= ord(‘A‘) && $fchar <= ord(‘z‘)) return strtoupper($str{0}); ???????$s1 = iconv(‘UTF-8‘, ‘gb2312‘, $str); ???????$s2 = iconv(‘gb2312‘, ‘UTF-8‘, $s1); ???????$s = $s2 == $str ? $s1 : $str; ???????$asc = ord($s{0}) * 256 + ord($s{1}) - 65536; ???????if ($asc >= -20319 && $asc <= -20284) return ‘A‘; ???????if ($asc >= -20283 && $asc <= -19776) return ‘B‘; ???????if ($asc >= -19775 && $asc <= -19219) return ‘C‘; ???????if ($asc >= -19218 && $asc <= -18711) return ‘D‘; ???????if ($asc >= -18710 && $asc <= -18527) return ‘E‘; ???????if ($asc >= -18526 && $asc <= -18240) return ‘F‘; ???????if ($asc >= -18239 && $asc <= -17923) return ‘G‘; ???????if ($asc >= -17922 && $asc <= -17418) return ‘H‘; ???????if ($asc >= -17417 && $asc <= -16475) return ‘J‘; ???????if ($asc >= -16474 && $asc <= -16213) return ‘K‘; ???????if ($asc >= -16212 && $asc <= -15641) return ‘L‘; ???????if ($asc >= -15640 && $asc <= -15166) return ‘M‘; ???????if ($asc >= -15165 && $asc <= -14923) return ‘N‘; ???????if ($asc >= -14922 && $asc <= -14915) return ‘O‘; ???????if ($asc >= -14914 && $asc <= -14631) return ‘P‘; ???????if ($asc >= -14630 && $asc <= -14150) return ‘Q‘; ???????if ($asc >= -14149 && $asc <= -14091) return ‘R‘; ???????if ($asc >= -14090 && $asc <= -13319) return ‘S‘; ???????if ($asc >= -13318 && $asc <= -12839) return ‘T‘; ???????if ($asc >= -12838 && $asc <= -12557) return ‘W‘; ???????if ($asc >= -12556 && $asc <= -11848) return ‘X‘; ???????if ($asc >= -11847 && $asc <= -11056) return ‘Y‘; ???????if ($asc >= -11055 && $asc <= -10247) return ‘Z‘; ???????return null;}(5)验证手机号public ?function IsMobile($string){ ???????$rule ?= "/^((13[0-9])|170|147|(15[0-35-9])|(18[0-9]))[0-9]{8}$/"; ???????if(!preg_match($rule,$string)){ ?????????????return false; ???????}else{ ?????????????return true; ???????} }(6)座机号码验证public ?function IsPhone($string){ ???????$rule ?= "/^(0[0-9]{2,3}\-)?([2-9][0-9]{6,7})+(\-[0-9]{1,4})?$/"; ???????if(!preg_match($rule,$string)){ ?????????????return false; ???????}else{ ?????????????return true; ???????}}(7)邮编号码验证public ?function IsPostCode($string){ ???????$rule ?= "/^[0-9]{6}$/"; ???????if(!preg_match($rule,$string)){ ?????????????return false; ???????}else{ ?????????????return true; ???????}}(8)邮箱验证public ?function IsEmail($string){ ???????$rule = "/^[_.0-9a-z-]+@([0-9a-z][0-9a-z-]+.)+[a-z]{2,3}$/"; ???????if(!preg_match($rule,$string)){ ?????????????return false; ???????}else{ ?????????????return true; ???????} }(9)验证是否为数字public ?function IsNumber($string){ ???????$rule ?= "/^[1-9]\d*$/"; ???????if(!preg_match($rule,$string)){ ?????????????return false; ???????}else{ ?????????????return true; ???????}}(10)验证小数点public ?function CheckPoints($str){ ???????if(ceil($str)==$str && floor($str)==$str){ ?????????????return true; ???????}else{ ???????????if (!ereg("^[0-5][.][0-9]{1,}", $str)) { ?????????????????return false; ???????????}else{ ?????????????????return true; ???????????} ???????} }(11)验证金额是否正确public ?function MoneyIsCorrect($string){ ???????$rule ?= "/^(([1-9]\d{0,9})|0)(\.\d{1,2})?$/"; ???????if(!preg_match($rule,$string)){ ?????????????return false; ???????}else{ ?????????????return true; ???????}}(12) 校验日期格式是否正确public function IsDate($date, $format = ‘Y-m-d H:i:s‘) { ???????$unixTime = strtotime($date); ???????if (!$unixTime) { //strtotime转换不对，日期格式显然不对。 ???????????return false; ???????} ???????//校验日期的有效性，只要满足其中一个格式就OK ???????if (date($format, $unixTime) == $date) { ???????????return true; ???????} ???????return false;}(13)验证URL地址是否合法public ?function check_url($url){ ?????$pattern_3=‘/^http[s]?:\/\/‘. ?‘(([0-9]{1,3}\.){3}[0-9]{1,3}‘. ‘|‘. ‘([0-9a-z_!~*\‘()-]+\.)*‘. ‘([0-9a-z][0-9a-z-]{0,61})?[0-9a-z]\.‘. ‘[a-z]{2,6})‘. ?‘(:[0-9]{1,4})?‘. ?‘((\/\?)|‘. ?‘(\/[0-9a-zA-Z_!~\*\‘\(\)\.;\?:@&=\+\$,%#-\/]*)?)$/‘; ?????if(preg_match($pattern_3, $url)){ ???????????return ture; ?????} else{ ???????????return false; ?????}}(14)格式化保留两位小数function normal_number_format($v) { ???????if(empty($v)) { ???????????return ‘0.00‘; ???????} ???????if(!is_numeric($v)) { ???????????return ‘NaN‘; ???????} ???????return number_format($v,2,‘.‘,‘,‘); ???}(15)从html中获取图片地址public function get_img_html($str){ ???????$pattern="/<img.*?src=[\‘|\"](.*?(?:[\.gif|\.jpg]))[\‘|\"].*?[\/]?>/";//取src ???????preg_match_all($pattern,$str,$match); ???????if(isset($match[1])&&!empty($match[1])){ ?????????????return $match[1]; ???????} ???????return ‘‘;}(16)从字符串中获取http开头的地址public ?function get_http_url($str){ ???????$pattern=‘/https?:[^"]+/‘; ???????preg_match_all($pattern,$str,$match); ???????if(isset($match[0])){ ?????????????return $match[0]; ???????} ???????return ‘‘;}(17)验证是否为微信浏览器public function IsWechat() { ??????$agent = isset($_SERVER[‘HTTP_USER_AGENT‘]) ? strtolower($_SERVER[‘HTTP_USER_AGENT‘]) : null; ??????return (strpos($agent, ‘micromessenger‘) !== false);}(18)验证是否为IOSpublic function IsIOS() { ?????$agent = isset($_SERVER[‘HTTP_USER_AGENT‘]) ? strtolower($_SERVER[‘HTTP_USER_AGENT‘]) : null; ?????return (strpos($agent, ‘iphone‘) !== false);}/* (19)作用:取得随机字符串 * 参数: * 1、(int)$length = 32 #随机字符长度 * 2、(int)$mode = 0 ???#随机字符类型，0为大小写英文和数字,1为数字,2为小写字母,3为大写字母, ?4为大小写字母,5为大写字母和数字,6为小写字母和数字 * 返回:取得的字符串 */public function get_code($length = 32, $mode = 0) {//获取随机验证码函数 ???switch ($mode) { ???????case ‘1‘: ?????????????$str = ‘0123456789‘; ?????????????break; ???????case ‘2‘: ?????????????$str = ‘abcdefghijklmnopqrstuvwxyz‘; ?????????????break; ???????case ‘3‘: ?????????????$str = ‘ABCDEFGHIJKLMNOPQRSTUVWXYZ‘; ?????????????break; ???????case ‘4‘: ?????????????$str = ‘ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz‘; ?????????????break; ???????case ‘5‘: ?????????????$str = ‘ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890‘; ?????????????break; ???????case ‘6‘: ?????????????$str = ‘abcdefghijklmnopqrstuvwxyz1234567890‘; ?????????????break; ???????default: ?????????????$str = ‘ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz1234567890‘; ?????????????break; ???} ???$checkstr = ‘‘; ???$len = strlen($str) - 1; ???for ($i = 0; $i < $length; $i++) { ???????????$num = mt_rand(0, $len); //产生一个0到$len之间的随机数 ???????????$checkstr.=$str[$num]; ???} ???return $checkstr;}(20)生成订单编号public static function createOrderNo() { ???????return date(‘YmdHis‘) . substr(implode(NULL, array_map(‘ord‘, str_split(substr(uniqid(), 7, 13), 1))), 0, 6);}/** ?* (21)获取唯一编号号 ?* @param mixed $sql_model ?* $c:前缀，$table：表名，$prefiel：字段 ?* @return string ?*/public function GetNum($c,$table,$prefiel){ ???????$cdh=date(‘YmdHis‘,strtotime($this->GetDateTimeMk(time()))); ???????$lscdh=substr(implode(NULL, array_map(‘ord‘, str_split(substr(uniqid(), 7, 13), 1))), 0, 8); ???????$rdh=$c.substr($cdh,0,12).$lscdh; ???????//判断编号号是否被占用 ???????$table_m=M($table); ???????$rowcount=$table_m->where(‘"{$prefiel}"="‘.$rdh.‘"‘)->count(); ???????if($rowcount>0){ ?????????????$rdh=$this->GetNum(); ???????} ???????return $rdh;}(22)创建短链接public function shortUrl($url){ ???????$base32 = array ( ?????????????‘a‘, ‘b‘, ‘c‘, ‘d‘, ‘e‘, ‘f‘, ‘g‘, ‘h‘, ?????????????‘i‘, ‘j‘, ‘k‘, ‘l‘, ‘m‘, ‘n‘, ‘o‘, ‘p‘, ?????????????‘q‘, ‘r‘, ‘s‘, ‘t‘, ‘u‘, ‘v‘, ‘w‘, ‘x‘, ?????????????‘y‘, ‘z‘, ‘0‘, ‘1‘, ‘2‘, ‘3‘, ‘4‘, ‘5‘ ???????); ???????$hex = md5($url); ???????$hexLength = strlen($hex); ???????$subHexLen = $hexLength / 8; ???????$output = array(); ???????for ($i = 0; $i < $subHexLen; $i++) { ???????????//每循环一次取到8位 ???????????$subHex = substr ($hex, $i * 8, 8); ???????????$int = 0x3FFFFFFF & (1 * (‘0x‘.$subHex)); ???????????$out = ‘‘; ???????????for ($j = 0; $j < 6; $j++) { ???????????????$val = 0x0000001F & $int; ???????????????$out .= $base32[$val]; ???????????????$int = $int >> 5; ???????????} ???????????$output[] = $out; ???????} ???????$re=$this->chechkShortUrl($output[‘0‘]); ???????if($re){ ???????????$this->shortUrl($url); ???????} ???????return $output[0];}// 验证短链接是否唯一public function chechkShortUrl($url){ ???????$count=M(‘promotion_real_url‘)->where(‘short_url="‘.$url.‘"‘)->count(); ???????if($count==0){ ???????????return false;//如果短链接不存在，则返回上面 ???????} ???????return true;//如果存在，则返回短链接}(23)敏感词过滤public function removeBadWords($badWord){ ???????$badword = C(‘bad_words‘); ???????$badword1 = array_combine($badword,array_fill(0,count($badword),‘***‘)); ???????$str = strtr($badWord, $badword1); ???????return $str;}