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330 lines (282 loc) · 10.2 KB
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<?php
header('content-type:text/html;charset=utf-8');
/**
* 字符串相关操作的工具类
* Class StringTools
*/
class StringTools{
/**
* @desc 字符串截取，支持中文和其他编码, 字符串截取是一个开发者都要面对的基本技能，毕竟你要处理数据，支持中文和其他编码
* @desc 这里的关键，$charset="utf-8"，对中文支持是很重要的！不然出现一些？号，就要挨批了！
* @param [string] $str [字符串]
* @param integer $start [起始位置]
* @param integer $length [截取长度]
* @param string $charset [字符串编码]
* @param boolean $suffix [是否有省略号]
* @return [type] [description]
*/
public function mSubStr($str, $start=0, $length=15, $charset="utf-8", $suffix=true) {
if(function_exists("mb_substr")) {
return mb_substr($str, $start, $length, $charset);
} elseif(function_exists('iconv_substr')) {
return iconv_substr($str,$start,$length,$charset);
}
$re['utf-8'] = "/[\x01-\x7f]|[\xc2-\xdf][\x80-\xbf]|[\xe0-\xef][\x80-\xbf]{2}|[\xf0-\xff][\x80-\xbf]{3}/";
$re['gb2312'] = "/[\x01-\x7f]|[\xb0-\xf7][\xa0-\xfe]/";
$re['gbk'] = "/[\x01-\x7f]|[\x81-\xfe][\x40-\xfe]/";
$re['big5'] = "/[\x01-\x7f]|[\x81-\xfe]([\x40-\x7e]|\xa1-\xfe])/";
preg_match_all($re[$charset], $str, $match);
$slice = join("",array_slice($match[0], $start, $length));
if($suffix) {
return $slice."…";
}
return $slice;
}
/*
使用方法如下：
echo mSubStr($str, $start=0, $length=15, $charset="utf-8", $suffix=true)
*/
/**
* @desc PHP利用正则表达式实现手机号码中间4位用星号替换显示
* @param $phone
* @return null|string|string[]
*/
public function hideTel($phone){
$IsWhat = preg_match('/(0[0-9]{2,3}[-]?[2-9][0-9]{6,7}[-]?[0-9]?)/i',$phone); //固定电话
if($IsWhat == 1){
return preg_replace('/(0[0-9]{2,3}[-]?[2-9])[0-9]{3,4}([0-9]{3}[-]?[0-9]?)/i','$1****$2',$phone);
}else{
return preg_replace('/(1[358]{1}[0-9])[0-9]{4}([0-9]{4})/i','$1****$2',$phone);
}
}
/*
$phone = "13966778888";
echo hideTel($phone);
*/
/**
* @desc 获取指定文件的后缀名
* @param array $input 输入的数组
* @param string $columnKey 指定数组列明
* @param null $indexKey
* @return array
*/
public function getFileExt($file) {
//SPLFileInfo类的getExtension方法，需要5.3.6+版本
if(version_compare(PHP_VERSION,'5.3.6','>=')){
$fileInfo = new splFileInfo($file);
return $fileInfo->getExtension();
}else{
$fileInfo = pathinfo($file);
return $fileInfo['extension'];
}
}
/*
$file = 'C:\Users\Administrator\Desktop\新建文件夹\127.0.0.1\test.txt';
//输出 txt
echo getFileExt($file);
*/
/**
* @desc 判断字符串是utf-8 还是gb2312
* @param $str
* @param string $default
* @return string
*/
public static function is_utf8_gb2312($str, $default = 'gb2312')
{
$str = preg_replace("/[\x01-\x7F]+/", "", $str);
if (empty($str)) return $default;
$preg = array(
"gb2312" => "/^([\xA1-\xF7][\xA0-\xFE])+$/", //正则判断是否是gb2312
"utf-8" => "/^[\x{4E00}-\x{9FA5}]+$/u", //正则判断是否是汉字(utf8编码的条件了)，这个范围实际上已经包含了繁体中文字了
);
if ($default == 'gb2312') {
$option = 'utf-8';
} else {
$option = 'gb2312';
}
if (!preg_match($preg[$default], $str)) {
return $option;
}
$str = @iconv($default, $option, $str);
//不能转成 $option, 说明原来的不是 $default
if (empty($str)) {
return $option;
}
return $default;
}
/**
* @desc utf-8和gb2312自动转化
* @param $string
* @param string $outEncoding
* @return string
*/
public static function safeEncoding($string,$outEncoding = 'UTF-8')
{
$encoding = "UTF-8";
for($i = 0; $i < strlen ( $string ); $i ++) {
if (ord ( $string {$i} ) < 128)
continue;
if ((ord ( $string {$i} ) & 224) == 224) {
// 第一个字节判断通过
$char = $string {++ $i};
if ((ord ( $char ) & 128) == 128) {
// 第二个字节判断通过
$char = $string {++ $i};
if ((ord ( $char ) & 128) == 128) {
$encoding = "UTF-8";
break;
}
}
}
if ((ord ( $string {$i} ) & 192) == 192) {
// 第一个字节判断通过
$char = $string {++ $i};
if ((ord ( $char ) & 128) == 128) {
// 第二个字节判断通过
$encoding = "GB2312";
break;
}
}
}
if (strtoupper ( $encoding ) == strtoupper ( $outEncoding ))
return $string;
else
return @iconv ( $encoding, $outEncoding, $string );
}
/**
* @desc 将用户名进行处理，中间用星号表示，可用于中文，https://www.whmblog.cn/php/40.html
* @param $user_name
* @return string
*/
public function subStrCut($user_name){
//获取字符串长度
$strlen = mb_strlen($user_name, 'utf-8');
//如果字符创长度小于2，不做任何处理
if($strlen<2){
return $user_name;
}else{
//mb_substr — 获取字符串的部分
$firstStr = mb_substr($user_name, 0, 1, 'utf-8');
$lastStr = mb_substr($user_name, -1, 1, 'utf-8');
//str_repeat — 重复一个字符串
return $strlen == 2 ? $firstStr . str_repeat('*', mb_strlen($user_name, 'utf-8') - 1) : $firstStr . str_repeat("*", $strlen - 2) . $lastStr;
}
}
/**
* @desc 随机字符串生成
* @param int $len 生成的字符串长度
* @return string
*/
function randomString($len = 6) {
$chars = 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", "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", "6", "7", "8", "9"
);
$charsLen = count($chars) - 1;
shuffle($chars); // 将数组打乱
$output = "";
for ($i = 0; $i < $len; $i++) {
$output .= $chars[mt_rand(0, $charsLen)];
}
return $output;
}
/**
* @desc 随机字符
* @param number $length 长度
* @param string $type 类型
* @param number $convert 转换大小写
* @return string
*/
public function random($length=6, $type='string', $convert=0){
$config = array(
'number'=>'1234567890',
'letter'=>'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ',
'string'=>'abcdefghjkmnpqrstuvwxyzABCDEFGHJKMNPQRSTUVWXYZ23456789',
'all'=>'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890'
);
if(!isset($config[$type])) $type = 'string';
$string = $config[$type];
$code = '';
$strlen = strlen($string) -1;
for($i = 0; $i < $length; $i++){
$code .= $string{mt_rand(0, $strlen)};
}
if(!empty($convert)){
$code = ($convert > 0)? strtoupper($code) : strtolower($code);
}
return $code;
}
/**
* @desc 查询字符是否存在于某字符串
* @param $haystack 字符串
* @param $needle 要查找的字符
* @return bool
*/
public function strExists($haystack, $needle)
{
return !(strpos($haystack, $needle) === FALSE);
}
/**
* @desc 实现中文字串截取无乱码的方法
* @param $string
* @param $start
* @param $length
* @return string
*/
public function getSubstr($string, $start, $length) {
if(mb_strlen($string,'utf-8')>$length){
$str = mb_substr($string, $start, $length,'utf-8');
return $str.'...';
}else{
return $string;
}
}
/**
* @desc 手机号隐藏中间
* @param $mobile
* @return mixed
*/
public function mobileHide($mobile){
return substr_replace($mobile,'****',3,4);
}
/**
* @desc 自动转换字符集 支持数组转换
* @param $string 需要转换的字符串或数组
* @param string $from 以什么字符集编码开始转换
* @param string $to 转换成什么字符集编码
* @return array|string
*/
public static function autoCharset($string, $from='gbk', $to='utf-8') {
$from = strtoupper($from) == 'UTF8' ? 'utf-8' : $from;
$to = strtoupper($to) == 'UTF8' ? 'utf-8' : $to;
if (strtoupper($from) === strtoupper($to) || empty($string) || (is_scalar($string) && !is_string($string))) {
//如果编码相同或者非字符串标量则不转换
return $string;
}
if (is_string($string)) {
if (function_exists('mb_convert_encoding')) {
return mb_convert_encoding($string, $to, $from);
} elseif (function_exists('iconv')) {
return iconv($from, $to, $string);
} else {
return $string;
}
} elseif (is_array($string)) {
foreach ($string as $key => $val) {
$_key = self::autoCharset($key, $from, $to);
$string[$_key] = self::autoCharset($val, $from, $to);
if ($key != $_key){
unset($string[$key]);
}
}
return $string;
}
else {
return $string;
}
}
}