MarkJane
4/18/2017 - 2:43 AM
PHP-常用开发函数库.php
PHP-常用开发函数库.php
class functionInit {
/**
* 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 ) ? $matches [0] : '';
}
/**
* 方法库-获取随机值
* @return string
*/
public function get_rand($str, $len) {
return substr(md5(uniqid(rand()*strval($str))),0, (int) $len);
}
/**
* 方法库-获取随机Hash值
* @return string
*/
public function get_hash($length = 13) {
$chars = '0123456789abcdefghijklmnopqrstuvwxyz';
$max = strlen($chars) - 1;
mt_srand((double)microtime() * 1000000);
for ($i=0; $i<$length; $i++) {
$hash .= $chars[mt_rand(0, $max)];
}
return $hash;
}
/**
* 方法库-截取字符串-【该函数作者未知】
* @param string $string 字符串
* @param int $length 字符长度
* @param string $dot 截取后是否添加...
* @param string $charset编码
* @return string
*/
public function cutstr($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[$n]); //ASCIIֵ
if($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;
}
/**
* 方法库-字符串是否存在
* @param string $str :字符或字符串
* @param string $string :字符串
* @return string 例子: $str='34' $string='1234' 返回 TRUE
*/
public function is_str_exist($str, $string) {
$string = (string) $string;
$str = (string) $str;
return strstr($string,$str)===false ? false : true;
}
/**
* 方法库-token使用
* @param string $type :encode-加密方法|decode-解密方法
* @return string|bool
*/
public function token($type = 'encode') {
session_start();
if ($type == 'encode') {
$key = $this->get_hash(5);
$_SESSION['init_token'] = $key;
return '<input name="init_token" type="hidden" value="'.$_SESSION['init_token'].'"/>';
} else {
$value = trim($_POST['init_token']);
if ($value !== $_SESSION['init_token']) return false;
return true;
}
}
/**
* 方法库-压缩函数，主要是发送http页面内容过大的时候应用
* @param string $content 内容
* @return string
*/
public function gzip(&$content) {
if(!headers_sent()&&extension_loaded("zlib")&&strstr($_SERVER["HTTP_ACCEPT_ENCODING"],"gzip")){
$content = gzencode($content,2);
header("Content-Encoding: gzip");
header("Vary: Accept-Encoding");
header("Content-Length: ".strlen($content));
}
return $content;
}
/**
* 方法库-向父串中插入子串
* @param string $string : 父串
* @param number $sublen : 长度
* @param string $str : 子串
* @param string $code : 编码
* @return string
*/
public function insert_str($string, $sublen=10, $str="<br/>", $code='UTF-8'){
if ($code == 'UTF-8') {
$pa ="/[\x01-\x7f]|[\xc2-\xdf][\x80-\xbf]|\xe0[\xa0-\xbf][\x80-\xbf]|[\xe1-\xef][\x80-\xbf][\x80-\xbf]|\xf0[\x90-\xbf][\x80-\xbf][\x80-\xbf]|[\xf1-\xf7][\x80-\xbf][\x80-\xbf][\x80-\xbf]/";
preg_match_all($pa, $string, $t_string);
$n = count($t_string[0]);
$floor = ceil($n / $sublen);
if ($n > $sublen) {
for ($i=0; $i < $floor; $i++) {
array_splice($t_string[0], ($sublen * ($i+1))-1, 0, $str);
}
return implode('', $t_string[0]);
} else {
array_splice($t_string[0], $sublen, 0);
return implode('', $t_string[0]);
}
}
}
/**
* 方法库-加密解密函数
* @param string $string 加密的字符串
* @param number $key 加密的密钥
* @param string $type 加密的方法-ENCODE|加密 DECODE|解密
* @return string
*/
public function str_code($string, $key, $type = 'ENCODE') {
$string = ($type == 'DECODE') ? base64_decode($string) : $string;
$key_len = strlen($key);
$key = md5($key);
$string_len = strlen($string);
for ($i=0; $i<$string_len; $i++) {
$j = ($i * $key_len) % 32;
$code .= $string[$i] ^ $key[$j];
}
return ($type == 'ENCODE') ? base64_encode($code) : $code;
}
/**
* 方法库-输出钱的格式
* @param string $num 数值
* @return string
*/
public function format_number($num){
return number_format($num, 2, ".", ",");
}
/**
* 方法库-字节转换-转换成MB格式等
* @param string $num 数值
* @return string
*/
public function bitsize($num) {
if(!preg_match("/^[0-9]+$/", $num)) return 0;
$type = array( "B", "KB", "MB", "GB", "TB", "PB" );
$j = 0;
while($num >= 1024) {
if( $j >= 5 ) return $num.$type[$j];
$num = $num / 1024;
$j++;
}
return $num.$type[$j];
}
/**
* 方法库-数组去除空值
* @param string $num 数值
* @return string
*/
public function array_remove_empty(&$arr, $trim = true) {
if (!is_array($arr)) return false;
foreach($arr as $key => $value){
if (is_array($value)) {
self::array_remove_empty($arr[$key]);
} else {
$value = ($trim == true) ? trim($value) : $value;
if ($value == "") {
unset($arr[$key]);
} else {
$arr[$key] = $value;
}
}
}
}
/**
* 生成 options html 代码
* @param array $arr 健值数组
* @param string $default 默认值
* @return string htmlcode
*/
function generateHtmlOptions($arr, $default = null){
$string = '';
if (!is_array($arr) && count($array)) return $string;
foreach ($arr as $key => $val) {
$selected = ($default == $key) ? 'selected' : '';
$string .= '<option value="'.$key.'" '.$selected.'>';
$string .= $val;
$string .= '</option>';
}
return $string;
}
/**
* 清空数组中的空值
* @param array $array
* @return array
*/
public function clear_array_null(&$array) {
foreach($array as $k => $v){
if(empty($v)) unset($array[$k]);
}
return $array;
}
/**
* 左边清空
* @param string $string
* @return string
*/
public function rltrim($string) {
if (is_string($string)) return trim($string);
foreach($string as $k => $v){
$string[$k] = trim($v);
}
return $string;
}
/**
* 生成唯一的订单号 20110809111259232312
* 2011-年日期
* 08-月份
* 09-日期
* 11-小时
* 12-分
* 59-秒
* 2323-微秒
* 12-随机值
* @return string
*/
public function trade_no() {
list($usec, $sec) = explode(" ", microtime());
$usec = substr(str_replace('0.', '', $usec), 0 ,4);
$str = rand(10,99);
return date("YmdHis").$usec.$str;
}
/**
* 获取接受JS传递中文编码函数
* 作者：Min
* @param string $str
* @return string
*/
public function js_unescape($str){
$ret = '';
$len = strlen($str);
for ($i = 0; $i < $len; $i++) {
if ($str[$i] == '%' && $str[$i+1] == 'u') {
$val = hexdec(substr($str, $i+2, 4));
if ($val < 0x7f) $ret .= chr($val);
else if($val < 0x800) $ret .= chr(0xc0|($val>>6)).chr(0x80|($val&0x3f));
else $ret .= chr(0xe0|($val>>12)).chr(0x80|(($val>>6)&0x3f)).chr(0x80|($val&0x3f));
$i += 5;
} else if ($str[$i] == '%') {
$ret .= urldecode(substr($str, $i, 3));
$i += 2;
}
else $ret .= $str[$i];
}
return $ret;
}
}