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常用的php自定义函数
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作者:巩文
2013.09.13 19:41
热度:8606
常用的php自定义函数,分享一下。 ```php $val) $string[$key] = new_addslashes($val); return $string; } /** * 返回经stripslashes处理过的字符串或数组 * @param $string 需要处理的字符串或数组 * @return mixed */ function new_stripslashes($string) { if(!is_array($string)) return stripslashes($string); foreach($string as $key => $val) $string[$key] = new_stripslashes($val); return $string; } /** * 返回经addslashe处理过的字符串或数组 * @param $obj 需要处理的字符串或数组 * @return mixed */ function new_html_special_chars($string) { if(!is_array($string)) return htmlspecialchars($string); foreach($string as $key => $val) $string[$key] = new_html_special_chars($val); return $string; } /** * 安全过滤函数 * * @param $string * @return string */ function safe_replace($string) { $string = str_replace('%20','',$string); $string = str_replace('%27','',$string); $string = str_replace('%2527','',$string); $string = str_replace('*','',$string); $string = str_replace('"','"',$string); $string = str_replace("'",'',$string); $string = str_replace('"','',$string); $string = str_replace(';','',$string); $string = str_replace('<','<',$string); $string = str_replace('>','>',$string); $string = str_replace("{",'',$string); $string = str_replace('}','',$string); return $string; } /** * 过滤ASCII码从0-28的控制字符 * @return String */ function trim_unsafe_control_chars($str) { $rule = '/[' . chr ( 1 ) . '-' . chr ( 8 ) . chr ( 11 ) . '-' . chr ( 12 ) . chr ( 14 ) . '-' . chr ( 31 ) . ']*/'; return str_replace ( chr ( 0 ), '', preg_replace ( $rule, '', $str ) ); } /** * 格式化文本域内容 * * @param $string 文本域内容 * @return string */ function trim_textarea($string) { $string = nl2br ( str_replace ( ' ', ' ', $string ) ); return $string; } /** * 将文本格式成适合js输出的字符串 * @param string $string 需要处理的字符串 * @param intval $isjs 是否执行字符串格式化,默认为执行 * @return string 处理后的字符串 */ function format_js($string, $isjs = 1) { $string = addslashes(str_replace(array("\r", "\n"), array('', ''), $string)); return $isjs ? 'document.write("'.$string.'");' : $string; } /** * 转义 javascript 代码标记 * * @param $str * @return mixed */ function trim_script($str) { $str = preg_replace ( '/\<([\/]?)script([^\>]*?)\>/si', '<\\1script\\2>', $str ); $str = preg_replace ( '/\<([\/]?)iframe([^\>]*?)\>/si', '<\\1iframe\\2>', $str ); $str = preg_replace ( '/\<([\/]?)frame([^\>]*?)\>/si', '<\\1frame\\2>', $str ); $str = preg_replace ( '/]]\>/si', ']] >', $str ); return $str; } /** * 获取当前页面完整URL地址 */ function get_url() { $sys_protocal = isset($_SERVER['SERVER_PORT']) && $_SERVER['SERVER_PORT'] == '443' ? 'https://' : 'http://'; $php_self = $_SERVER['PHP_SELF'] ? safe_replace($_SERVER['PHP_SELF']) : safe_replace($_SERVER['SCRIPT_NAME']); $path_info = isset($_SERVER['PATH_INFO']) ? safe_replace($_SERVER['PATH_INFO']) : ''; $relate_url = isset($_SERVER['REQUEST_URI']) ? safe_replace($_SERVER['REQUEST_URI']) : $php_self.(isset($_SERVER['QUERY_STRING']) ? '?'.safe_replace($_SERVER['QUERY_STRING']) : $path_info); return $sys_protocal.(isset($_SERVER['HTTP_HOST']) ? $_SERVER['HTTP_HOST'] : '').$relate_url; } /** * 字符截取 支持UTF8/GBK * @param $string * @param $length * @param $dot */ function str_cut($string, $length, $dot = '...') { $strlen = strlen($string); if($strlen <= $length) return $string; $string = str_replace(array(' ',' ', '&', '"', ''', '“', '”', '—', '<', '>', '·', '…'), array('∵',' ', '&', '"', "'", '“', '”', '—', '<', '>', '·', '…'), $string); $strcut = ''; if(strtolower(CHARSET) == 'utf-8') { $length = intval($length-strlen($dot)-$length/3); $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); $strcut = str_replace(array('∵',' ', '&', '"', "'", '“', '”', '—', '<', '>', '·', '…'), array(' ',' ', '&', '"', ''', '“', '”', '—', '<', '>', '·', '…'), $strcut); } else { $dotlen = strlen($dot); $maxi = $length - $dotlen - 1; $current_str = ''; $search_arr = array('&',' ', '"', "'", '“', '”', '—', '<', '>', '·', '…','∵'); $replace_arr = array('&',' ', '"', ''', '“', '”', '—', '<', '>', '·', '…',' '); $search_flip = array_flip($search_arr); for ($i = 0; $i < $maxi; $i++) { $current_str = ord($string[$i]) > 127 ? $string[$i].$string[++$i] : $string[$i]; if (in_array($current_str, $search_arr)) { $key = $search_flip[$current_str]; $current_str = str_replace($search_arr[$key], $replace_arr[$key], $current_str); } $strcut .= $current_str; } } return $strcut.$dot; } /** * 获取请求ip * * @return ip地址 */ function ip() { if(getenv('HTTP_CLIENT_IP') && strcasecmp(getenv('HTTP_CLIENT_IP'), 'unknown')) { $ip = getenv('HTTP_CLIENT_IP'); } elseif(getenv('HTTP_X_FORWARDED_FOR') && strcasecmp(getenv('HTTP_X_FORWARDED_FOR'), 'unknown')) { $ip = getenv('HTTP_X_FORWARDED_FOR'); } elseif(getenv('REMOTE_ADDR') && strcasecmp(getenv('REMOTE_ADDR'), 'unknown')) { $ip = getenv('REMOTE_ADDR'); } elseif(isset($_SERVER['REMOTE_ADDR']) && $_SERVER['REMOTE_ADDR'] && strcasecmp($_SERVER['REMOTE_ADDR'], 'unknown')) { $ip = $_SERVER['REMOTE_ADDR']; } return preg_match ( '/[\d\.]{7,15}/', $ip, $matches ) ? $matches [0] : ''; } function get_cost_time() { $microtime = microtime ( TRUE ); return $microtime - SYS_START_TIME; } /** * 程序执行时间 * * @return int 单位ms */ function execute_time() { $stime = explode ( ' ', SYS_START_TIME ); $etime = explode ( ' ', microtime () ); return number_format ( ($etime [1] + $etime [0] - $stime [1] - $stime [0]), 6 ); } /** * 产生随机字符串 * * @param int $length 输出长度 * @param string $chars 可选的 ,默认为 0123456789 * @return string 字符串 */ function random($length, $chars = '0123456789') { $hash = ''; $max = strlen($chars) - 1; for($i = 0; $i < $length; $i++) { $hash .= $chars[mt_rand(0, $max)]; } return $hash; } /** * 将字符串转换为数组 * * @param string $data 字符串 * @return array 返回数组格式,如果,data为空,则返回空数组 */ function string2array($data) { if($data == '') return array(); eval("\$array = $data;"); return $array; } /** * 将数组转换为字符串 * * @param array $data 数组 * @param bool $isformdata 如果为0,则不使用new_stripslashes处理,可选参数,默认为1 * @return string 返回字符串,如果,data为空,则返回空 */ function array2string($data, $isformdata = 1) { if($data == '') return ''; if($isformdata) $data = new_stripslashes($data); return addslashes(var_export($data, TRUE)); } /** * 转换字节数为其他单位 * * * @param string $filesize 字节大小 * @return string 返回大小 */ function sizecount($filesize) { if ($filesize >= 1073741824) { $filesize = round($filesize / 1073741824 * 100) / 100 .' GB'; } elseif ($filesize >= 1048576) { $filesize = round($filesize / 1048576 * 100) / 100 .' MB'; } elseif($filesize >= 1024) { $filesize = round($filesize / 1024 * 100) / 100 . ' KB'; } else { $filesize = $filesize.' Bytes'; } return $filesize; } /** * 字符串加密、解密函数 * * * @param string $txt 字符串 * @param string $operation ENCODE为加密,DECODE为解密,可选参数,默认为ENCODE, * @param string $key 密钥:数字、字母、下划线 * @return string */ function sys_auth($txt, $operation = 'ENCODE', $key = '') { $key = $key ? $key : pc_base::load_config('system', 'auth_key'); $txt = $operation == 'ENCODE' ? (string)$txt : base64_decode($txt); $len = strlen($key); $code = ''; for($i=0; $i
'value1','key2'=>'value2', * @param string $modules 多个模块之间用半角逗号隔开,如:member,guestbook * @return string 语言字符 */ function L($language = 'no_language',$pars = array(), $modules = '') { static $LANG = array(); static $LANG_MODULES = array(); $lang = pc_base::load_config('system','lang'); if(!$LANG) { require_once PC_PATH.'languages'.DIRECTORY_SEPARATOR.$lang.DIRECTORY_SEPARATOR.'system.lang.php'; if(defined('IN_ADMIN')) require_once PC_PATH.'languages'.DIRECTORY_SEPARATOR.$lang.DIRECTORY_SEPARATOR.'system_menu.lang.php'; if(file_exists(PC_PATH.'languages'.DIRECTORY_SEPARATOR.$lang.DIRECTORY_SEPARATOR.ROUTE_M.'.lang.php')) require PC_PATH.'languages'.DIRECTORY_SEPARATOR.$lang.DIRECTORY_SEPARATOR.ROUTE_M.'.lang.php'; } if(!empty($modules)) { $modules = explode(',',$modules); foreach($modules AS $m) { if(!isset($LANG_MODULES[$m])) require PC_PATH.'languages'.DIRECTORY_SEPARATOR.$lang.DIRECTORY_SEPARATOR.$m.'.lang.php'; } } if(!array_key_exists($language,$LANG)) { return $LANG['no_language'].'['.$language.']'; } else { $language = $LANG[$language]; if($pars) { foreach($pars AS $_k=>$_v) { $language = str_replace('{'.$_k.'}',$_v,$language); } } return $language; } } /** * 模板调用 * * @param $module * @param $template * @param $istag * @return unknown_type */ function template($module = 'content', $template = 'index', $style = '') { if(!empty($style) && !defined('STYLE')) { define('STYLE', $style); } elseif (empty($style) && !defined('STYLE')) { if(defined('SITEID')) { $siteid = SITEID; } else { $siteid = param::get_cookie('websiteid'); } $sitelist = getcache('sitelist','commons'); if(!empty($siteid)) { $style = $sitelist[$siteid]['default_style']; } } elseif (empty($style) && defined('STYLE')) { $style = STYLE; } else { $style = 'default'; } if(!$style) $style = 'default'; $template_cache = pc_base::load_sys_class('template_cache'); $compiledtplfile = PHPCMS_PATH.'caches'.DIRECTORY_SEPARATOR.'caches_template'.DIRECTORY_SEPARATOR.$style.DIRECTORY_SEPARATOR.$module.DIRECTORY_SEPARATOR.$template.'.php'; if(file_exists(PC_PATH.'templates'.DIRECTORY_SEPARATOR.$style.DIRECTORY_SEPARATOR.$module.DIRECTORY_SEPARATOR.$template.'.html')) { if(!file_exists($compiledtplfile) || (@filemtime(PC_PATH.'templates'.DIRECTORY_SEPARATOR.$style.DIRECTORY_SEPARATOR.$module.DIRECTORY_SEPARATOR.$template.'.html') > @filemtime($compiledtplfile))) { $template_cache->template_compile($module, $template, $style); } } else { $compiledtplfile = PHPCMS_PATH.'caches'.DIRECTORY_SEPARATOR.'caches_template'.DIRECTORY_SEPARATOR.'default'.DIRECTORY_SEPARATOR.$module.DIRECTORY_SEPARATOR.$template.'.php'; if(!file_exists($compiledtplfile) || (file_exists(PC_PATH.'templates'.DIRECTORY_SEPARATOR.'default'.DIRECTORY_SEPARATOR.$module.DIRECTORY_SEPARATOR.$template.'.html') && filemtime(PC_PATH.'templates'.DIRECTORY_SEPARATOR.'default'.DIRECTORY_SEPARATOR.$module.DIRECTORY_SEPARATOR.$template.'.html') > filemtime($compiledtplfile))) { $template_cache->template_compile($module, $template, 'default'); } elseif (!file_exists(PC_PATH.'templates'.DIRECTORY_SEPARATOR.'default'.DIRECTORY_SEPARATOR.$module.DIRECTORY_SEPARATOR.$template.'.html')) { showmessage('Template does not exist.'.DIRECTORY_SEPARATOR.$style.DIRECTORY_SEPARATOR.$module.DIRECTORY_SEPARATOR.$template.'.html'); } } return $compiledtplfile; } /** * 输出自定义错误 * * @param $errno 错误号 * @param $errstr 错误描述 * @param $errfile 报错文件地址 * @param $errline 错误行号 * @return string 错误提示 */ function my_error_handler($errno, $errstr, $errfile, $errline) { if($errno==8) return ''; $errfile = str_replace(PHPCMS_PATH,'',$errfile); if(pc_base::load_config('system','errorlog')) { error_log(date('m-d H:i:s',SYS_TIME).' | '.$errno.' | '.str_pad($errstr,30).' | '.$errfile.' | '.$errline."\r\n", 3, CACHE_PATH.'error_log.php'); } else { $str = '
errorno:' . $errno . ',str:' . $errstr . ',file:
' . $errfile . '
,line' . $errline .'
Need Help?
'; echo $str; } } /** * 提示信息页面跳转,跳转地址如果传入数组,页面会提示多个地址供用户选择,默认跳转地址为数组的第一个值,时间为5秒。 * showmessage('登录成功', array('默认跳转地址'=>'http://www.phpcms.cn')); * @param string $msg 提示信息 * @param mixed(string/array) $url_forward 跳转地址 * @param int $ms 跳转等待时间 */ function showmessage($msg, $url_forward = 'goback', $ms = 1250, $dialog = '', $returnjs = '') { if(defined('IN_ADMIN')) { include(admin::admin_tpl('showmessage', 'admin')); } else { include(template('content', 'message')); } exit; } /** * 查询字符是否存在于某字符串 * * @param $haystack 字符串 * @param $needle 要查找的字符 * @return bool */ function str_exists($haystack, $needle) { return !(strpos($haystack, $needle) === FALSE); } /** * 取得文件扩展 * * @param $filename 文件名 * @return 扩展名 */ function fileext($filename) { return strtolower(trim(substr(strrchr($filename, '.'), 1, 10))); } /** * 加载模板标签缓存 * @param string $name 缓存名 * @param integer $times 缓存时间 */ function tpl_cache($name,$times = 0) { $filepath = 'tpl_data'; $info = getcacheinfo($name, $filepath); if (SYS_TIME - $info['filemtime'] >= $times) { return false; } else { return getcache($name,$filepath); } } /** * 写入缓存,默认为文件缓存,不加载缓存配置。 * @param $name 缓存名称 * @param $data 缓存数据 * @param $filepath 数据路径(模块名称) caches/cache_$filepath/ * @param $type 缓存类型[file,memcache,apc] * @param $config 配置名称 * @param $timeout 过期时间 */ function setcache($name, $data, $filepath='', $type='file', $config='', $timeout='') { pc_base::load_sys_class('cache_factory','',0); if($config) { $cacheconfig = pc_base::load_config('cache'); $cache = cache_factory::get_instance($cacheconfig)->get_cache($config); } else { $cache = cache_factory::get_instance()->get_cache($type); } return $cache->set($name, $data, $timeout, '', $filepath); } /** * 读取缓存,默认为文件缓存,不加载缓存配置。 * @param string $name 缓存名称 * @param $filepath 数据路径(模块名称) caches/cache_$filepath/ * @param string $config 配置名称 */ function getcache($name, $filepath='', $type='file', $config='') { pc_base::load_sys_class('cache_factory','',0); if($config) { $cacheconfig = pc_base::load_config('cache'); $cache = cache_factory::get_instance($cacheconfig)->get_cache($config); } else { $cache = cache_factory::get_instance()->get_cache($type); } return $cache->get($name, '', '', $filepath); } /** * 删除缓存,默认为文件缓存,不加载缓存配置。 * @param $name 缓存名称 * @param $filepath 数据路径(模块名称) caches/cache_$filepath/ * @param $type 缓存类型[file,memcache,apc] * @param $config 配置名称 */ function delcache($name, $filepath='', $type='file', $config='') { pc_base::load_sys_class('cache_factory','',0); if($config) { $cacheconfig = pc_base::load_config('cache'); $cache = cache_factory::get_instance($cacheconfig)->get_cache($config); } else { $cache = cache_factory::get_instance()->get_cache($type); } return $cache->delete($name, '', '', $filepath); } /** * 读取缓存,默认为文件缓存,不加载缓存配置。 * @param string $name 缓存名称 * @param $filepath 数据路径(模块名称) caches/cache_$filepath/ * @param string $config 配置名称 */ function getcacheinfo($name, $filepath='', $type='file', $config='') { pc_base::load_sys_class('cache_factory'); if($config) { $cacheconfig = pc_base::load_config('cache'); $cache = cache_factory::get_instance($cacheconfig)->get_cache($config); } else { $cache = cache_factory::get_instance()->get_cache($type); } return $cache->cacheinfo($name, '', '', $filepath); } /** * 生成sql语句,如果传入$in_cloumn 生成格式为 IN('a', 'b', 'c') * @param $data 条件数组或者字符串 * @param $front 连接符 * @param $in_column 字段名称 * @return string */ function to_sqls($data, $front = ' AND ', $in_column = false) { if($in_column && is_array($data)) { $ids = '\''.implode('\',\'', $data).'\''; $sql = "$in_column IN ($ids)"; return $sql; } else { if ($front == '') { $front = ' AND '; } if(is_array($data) && count($data) > 0) { $sql = ''; foreach ($data as $key => $val) { $sql .= $sql ? " $front `$key` = '$val' " : " `$key` = '$val' "; } return $sql; } else { return $data; } } } /** * 分页函数 * * @param $num 信息总数 * @param $curr_page 当前分页 * @param $perpage 每页显示数 * @param $urlrule URL规则 * @param $array 需要传递的数组,用于增加额外的方法 * @return 分页 */ function pages($num, $curr_page, $perpage = 20, $urlrule = '', $array = array(),$setpages = 10) { if(defined('URLRULE')) { $urlrule = URLRULE; $array = $GLOBALS['URL_ARRAY']; } elseif($urlrule == '') { $urlrule = url_par('page={$page}'); } $multipage = ''; if($num > $perpage) { $page = $setpages+1; $offset = ceil($setpages/2-1); $pages = ceil($num / $perpage); if (defined('IN_ADMIN') && !defined('PAGES')) define('PAGES', $pages); $from = $curr_page - $offset; $to = $curr_page + $offset; $more = 0; if($page >= $pages) { $from = 2; $to = $pages-1; } else { if($from <= 1) { $to = $page-1; $from = 2; } elseif($to >= $pages) { $from = $pages-($page-2); $to = $pages-1; } $more = 1; } $multipage .= '
'.$num.L('page_item').'
'; if($curr_page>0) { $multipage .= '
'.L('previous').'
'; if($curr_page==1) { $multipage .= '
1
'; } elseif($curr_page>6 && $more) { $multipage .= '
1
..'; } else { $multipage .= '
1
'; } } for($i = $from; $i <= $to; $i++) { if($i != $curr_page) { $multipage .= '
'.$i.'
'; } else { $multipage .= '
'.$i.'
'; } } if($curr_page<$pages) { if($curr_page<$pages-5 && $more) { $multipage .= ' ..
'.$pages.'
'.L('next').'
'; } else { $multipage .= '
'.$pages.'
'.L('next').'
'; } } elseif($curr_page==$pages) { $multipage .= '
'.$pages.'
'.L('next').'
'; } else { $multipage .= '
'.$pages.'
'.L('next').'
'; } } return $multipage; } /** * 返回分页路径 * * @param $urlrule 分页规则 * @param $page 当前页 * @param $array 需要传递的数组,用于增加额外的方法 * @return 完整的URL路径 */ function pageurl($urlrule, $page, $array = array()) { if(strpos($urlrule, '~')) { $urlrules = explode('~', $urlrule); $urlrule = $page < 2 ? $urlrules[0] : $urlrules[1]; } $findme = array('{$page}'); $replaceme = array($page); if (is_array($array)) foreach ($array as $k=>$v) { $findme[] = '{$'.$k.'}'; $replaceme[] = $v; } $url = str_replace($findme, $replaceme, $urlrule); $url = str_replace(array('http://','//','~'), array('~','/','http://'), $url); return $url; } /** * URL路径解析,pages 函数的辅助函数 * * @param $par 传入需要解析的变量 默认为,page={$page} * @param $url URL地址 * @return URL */ function url_par($par, $url = '') { if($url == '') $url = get_url(); $pos = strpos($url, '?'); if($pos === false) { $url .= '?'.$par; } else { $querystring = substr(strstr($url, '?'), 1); parse_str($querystring, $pars); $query_array = array(); foreach($pars as $k=>$v) { $query_array[$k] = $v; } $querystring = http_build_query($query_array).'&'.$par; $url = substr($url, 0, $pos).'?'.$querystring; } return $url; } /** * 判断email格式是否正确 * @param $email */ function is_email($email) { return strlen($email) > 6 && preg_match("/^[\w\-\.]+@[\w\-\.]+(\.\w+)+$/", $email); } /** * iconv 编辑转换 */ if (!function_exists('iconv')) { function iconv($in_charset, $out_charset, $str) { $in_charset = strtoupper($in_charset); $out_charset = strtoupper($out_charset); if (function_exists('mb_convert_encoding')) { return mb_convert_encoding($str, $out_charset, $in_charset); } else { pc_base::load_sys_func('iconv'); $in_charset = strtoupper($in_charset); $out_charset = strtoupper($out_charset); if ($in_charset == 'UTF-8' && ($out_charset == 'GBK' || $out_charset == 'GB2312')) { return utf8_to_gbk($str); } if (($in_charset == 'GBK' || $in_charset == 'GB2312') && $out_charset == 'UTF-8') { return gbk_to_utf8($str); } return $str; } } } /** * 代码广告展示函数 * @param intval $siteid 所属站点 * @param intval $id 广告ID * @return 返回广告代码 */ function show_ad($siteid, $id) { $siteid = intval($siteid); $id = intval($id); if(!$id || !$siteid) return false; $p = pc_base::load_model('poster_model'); $r = $p->get_one(array('spaceid'=>$id, 'siteid'=>$siteid), 'setting', '`id` ASC'); if ($r['setting']) { $c = string2array($r['setting']); } else { $r['code'] = ''; } return $c['code']; } /** * 获取当前的站点ID */ function get_siteid() { static $siteid; if (!empty($siteid)) return $siteid; if (defined('IN_ADMIN')) { if ($d = param::get_cookie('siteid')) { $siteid = $d; } else { return ''; ```
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