关于php常用自定义函数_获取当前页面完整URL地址_字符截取 支持UTF8/GBK以下文字资料是由3搜网小编为大家搜集整理后发布的内容，希望大家阅读完这篇文章能有所收获，下面我们一起来看看这篇“php常用自定义函数_获取当前页面完整URL地址_字符截取 支持UTF8/GBK”文章吧。
/**
* 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 );
}
/**
* 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();
$data = stripslashes($data);
@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
* @param string $expiry 过期时间
* @return string
*/
function sys_auth($string, $operation = 'ENCODE', $key = '', $expiry = 0) {
$key_length = 4;
$key = md5($key != '' ? $key : app_base::load_config('system', 'auth_key'));
$fixedkey = md5($key);
$egiskeys = md5(substr($fixedkey, 16, 16));
$runtokey = $key_length ? ($operation == 'ENCODE' ? substr(md5(microtime(true)), -$key_length) : substr($string, 0, $key_length)) : '';
$keys = md5(substr($runtokey, 0, 16) . substr($fixedkey, 0, 16) . substr($runtokey, 16) . substr($fixedkey, 16));
$string = $operation == 'ENCODE' ? sprintf('%010d', $expiry ? $expiry + time() : 0).substr(md5($string.$egiskeys), 0, 16) . $string : base64_decode(substr($string, $key_length));
$i = 0; $result = '';
$string_length = strlen($string);
for ($i = 0; $i < $string_length; $i++){ $result .= chr(ord($string{$i}) ^ ord($keys{$i % 32})); } if($operation == 'ENCODE') { return $runtokey . str_replace('=', '', base64_encode($result)); } else { if((substr($result, 0, 10) == 0 || substr($result, 0, 10) - time() > 0) && substr($result, 10, 16) == substr(md5(substr($result, 26).$egiskeys), 0, 16)) {
return substr($result, 26);
} else {
return '';
}
}
}
/**
* 语言文件处理
*
* @param string $language 标示符
* @param array $pars 转义的数组,二维数组 ,'key1'=>'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();
static $lang = '';
if(defined('IN_ADMIN')) {
$lang = SYS_STYLE ? SYS_STYLE : 'zh-cn';
} else {
$lang = app_base::load_config('system','lang');
}
if(!$LANG) {
require_once CODE_PATH.'languages'.DIRECTORY_SEPARATOR.$lang.DIRECTORY_SEPARATOR.'system.lang.php';
if(defined('IN_ADMIN')) require_once CODE_PATH.'languages'.DIRECTORY_SEPARATOR.$lang.DIRECTORY_SEPARATOR.'system_menu.lang.php';
if(file_exists(CODE_PATH.'languages'.DIRECTORY_SEPARATOR.$lang.DIRECTORY_SEPARATOR.ROUTE_M.'.lang.php')) require_once CODE_PATH.'languages'.DIRECTORY_SEPARATOR.$lang.DIRECTORY_SEPARATOR.ROUTE_M.'.lang.php';
}
if(!empty($modules)) {
$modules = explode(',',$modules);
foreach($modules AS $m) {
if(!isset($LANG_MODULES[$m])) require_once CODE_PATH.'languages'.DIRECTORY_SEPARATOR.$lang.DIRECTORY_SEPARATOR.$m.'.lang.php';
}
}
if(!array_key_exists($language,$LANG)) {
return $language;
} else {
$language = $LANG[$language];
if($pars) {
foreach($pars AS $_k=>$_v) {
$language = str_replace('{'.$_k.'}',$_v,$language);
}
}
return $language;
}
} 以上就是关于“php常用自定义函数_获取当前页面完整URL地址_字符截取 支持UTF8/GBK”这篇文章的内容，希望分享的内容对大家有帮助，若想了解更多相关的知识内容，请关注3搜网技术频道。
