MarkJane
4/18/2017 - 2:42 AM
finecms中摘取的common函数.php
finecms中摘取的common函数.php
/**
* 字符截取 支持UTF8/GBK
*/
function strcut($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 . $dot;
}
/**
* 清除HTML标记
*/
function clearhtml($str) {
$str = str_replace(array(' ', '&', '"', ''', '“', '”', '—', '<', '>', '·', '…'), array(' ', '&', '"', "'", '“', '”', '—', '<', '>', '·', '…'), $str);
$str = preg_replace("/\<[a-z]+(.*)\>/iU", "", $str);
$str = preg_replace("/\<\/[a-z]+\>/iU", "", $str);
$str = str_replace(array(' ',' ', chr(13), chr(10), ' '), array('', '', '', '', ''), $str);
return $str;
}
/**
* 返回经addslashes处理过的字符串或数组
* @param $string 需要处理的字符串或数组
* @return mixed
*/
function new_addslashes($string){
if(!is_array($string)) return addslashes($string);
foreach($string as $key => $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;
}
/**
* 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 ($data == '') return array();
if (is_array($data)) return $data;
if (strpos($data, 'array') !== false && strpos($data, 'array') === 0) {
@eval("\$array = $data;");
return $array;
}
return unserialize($data);
}
/**
* 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 serialize($data);
}
/**
* 编码转换函数
* @param $str
* @param $from
* @param $to
* @return string
*/
function convert($str, $from = 'gbk', $to = 'utf-8') {
if (!$str) return '';
if (strtolower($from) == strtolower($to)) return $str;
$to = str_replace('gb2312', 'gbk', strtolower($to));
$from = str_replace('gb2312', 'gbk', strtolower($from));
if ($form == 'gbk' && $to == 'utf-8') {
return gbk_to_utf8($str);
} elseif ($form == 'utf-8' && $to == 'gbk') {
return utf8_to_gbk($str);
} else {
return $str;
}
}
/**
* utf8转gbk
* @param $utfstr
*/
function utf8_to_gbk($utfstr) {
$filename = EXTENSION_DIR . 'encoding' . DIRECTORY_SEPARATOR . 'gb-unicode.table';
$UC2GBTABLE = array();
$fp = fopen($filename, 'rb');
while($l = fgets($fp, 15)) {
$UC2GBTABLE[hexdec(substr($l, 7, 6))] = hexdec(substr($l, 0, 6));
}
fclose($fp);
$okstr = '';
$ulen = strlen($utfstr);
for($i=0; $i<$ulen; $i++) {
$c = $utfstr[$i];
$cb = decbin(ord($utfstr[$i]));
if(strlen($cb)==8) {
$csize = strpos(decbin(ord($cb)), '0');
for($j = 0; $j < $csize; $j++) {
$i++;
$c .= $utfstr[$i];
}
$c = utf8_to_unicode($c);
if(isset($UC2GBTABLE[$c])) {
$c = dechex($UC2GBTABLE[$c]+0x8080);
$okstr .= chr(hexdec($c[0] . $c[1])) . chr(hexdec($c[2] . $c[3]));
} else {
$okstr .= '&#' . $c . ';';
}
} else {
$okstr .= $c;
}
}
$okstr = trim($okstr);
return $okstr;
}
/**
* gbk转utf8
* @param $gbstr
*/
function gbk_to_utf8($gbstr) {
$filename = EXTENSION_DIR . 'encoding' . DIRECTORY_SEPARATOR . 'gb-unicode.table';
$CODETABLE = array();
$fp = fopen($filename, 'rb');
while ($l = fgets($fp, 15)) {
$CODETABLE[hexdec(substr($l, 0, 6))] = substr($l, 7, 6);
}
fclose($fp);
$ret = '';
$utf8 = '';
while ($gbstr) {
if (ord(substr($gbstr, 0, 1)) > 0x80) {
$thisW = substr($gbstr, 0, 2);
$gbstr = substr($gbstr, 2, strlen($gbstr));
$utf8 = '';
@$utf8 = unicode_to_utf8(hexdec($CODETABLE[hexdec(bin2hex($thisW)) - 0x8080]));
if ($utf8 != '') {
for ($i = 0; $i < strlen($utf8); $i += 3) $ret .= chr(substr($utf8, $i, 3));
}
} else {
$ret .= substr($gbstr, 0, 1);
$gbstr = substr($gbstr, 1, strlen($gbstr));
}
}
return $ret;
}
/**
* unicode转utf8
* @param $c
*/
function unicode_to_utf8($c) {
$str = '';
if ($c < 0x80) {
$str .= $c;
} elseif($c < 0x800) {
$str .= (0xC0 | $c >> 6);
$str .= (0x80 | $c & 0x3F);
} elseif($c < 0x10000) {
$str .= (0xE0 | $c >> 12);
$str .= (0x80 | $c >> 6 & 0x3F);
$str .= (0x80 | $c & 0x3F);
} elseif($c < 0x200000) {
$str .= (0xF0 | $c >> 18);
$str .= (0x80 | $c >> 12 & 0x3F);
$str .= (0x80 | $c >> 6 & 0x3F);
$str .= (0x80 | $c & 0x3F);
}
return $str;
}
/**
* utf8转unicode
* @param $c
*/
function utf8_to_unicode($c) {
switch (strlen($c)) {
case 1:
return ord($c);
case 2:
$n = (ord($c[0]) & 0x3f) << 6;
$n += ord($c[1]) & 0x3f;
return $n;
case 3:
$n = (ord($c[0]) & 0x1f) << 12;
$n += (ord($c[1]) & 0x3f) << 6;
$n += ord($c[2]) & 0x3f;
return $n;
case 4:
$n = (ord($c[0]) & 0x0f) << 18;
$n += (ord($c[1]) & 0x3f) << 12;
$n += (ord($c[2]) & 0x3f) << 6;
$n += ord($c[3]) & 0x3f;
return $n;
}
}
/**
* 格式化输出文件大小
*/
function formatFileSize($fileSize, $round = 2) {
if (empty($fileSize)) return 0;
$i = 0;
$inv = 1 / 1024;
$unit = array(' Bytes', ' KB', ' MB', ' GB', ' TB', ' PB', ' EB', ' ZB', ' YB');
while ($fileSize >= 1024 && $i < 8) {
$fileSize *= $inv;
++$i;
}
$fileSizeTmp = sprintf("%.2f", $fileSize);
$value = $fileSizeTmp - (int)$fileSizeTmp ? $fileSizeTmp : $fileSize;
return round($value, $round) . $unit[$i];
}
/**
* 统计目录大小
*/
function count_dir_size($dir) {
if (!is_dir($dir)) return 0;
set_time_limit(0);
$count = 0;
$handle = opendir($dir);
while (false !== ($file = readdir($handle))) {
if ($file == '.' || $file == '..') continue;
$path = $dir . $file;
if (is_dir($path)) {
$count += count_dir_size($path . '/', $size);
} elseif (is_file($path)) {
$count += filesize($path);
}
}
closedir($handle);
return $count;
}
/**
* 调用远程数据
*/
function fn_geturl($url) {
if (substr($url, 0, 7) != 'http://') return file_get_contents($url);
if (ini_get('allow_url_fopen')) {
return @file_get_contents($url);
} elseif (function_exists('curl_init') && function_exists('curl_exec')) {
$ch = curl_init($url);
$data = '';
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$data = curl_exec($ch);
curl_close($ch);
return $data;
}
}
/**
* 格式SQL查询IN(ID序列)
* @param $str
* @param $glue
* @return boolean|string
*/
function formatStr($str, $glue = ',') {
$arr = explode($glue, $str);
if (!is_array($arr)) return false;
$arr = array_unique($arr);
$ids = '';
foreach ($arr as $id) { if ($id) $ids .= ',' . $id; }
return substr($ids, 1);
}