/**
* 邹颢
* zouhao619@gmail.com
*/
/**
* 获取当前毫秒
* @return string
*/
function get_millisecond() {
$t = explode ( " ", microtime () );
$t = $t [1] . ($t [0] * 1000);
$t2 = explode ( ".", $t );
return $t2 [0];
}
/**
* curl模拟http/https post请求
* @param string $url 请求网址
* @param array $data 请求参数
* @return string 网址内容
*/
function curl_post($url,$data=array()){
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER,true) ; // 获取数据返回
curl_setopt($ch, CURLOPT_POST,true) ; // 启用时会发送一个常规的POST请求,类型为:application/x-www-form-urlencoded,就像表单提交的一样。
curl_setopt($ch, CURLOPT_POSTFIELDS,$data); // 在HTTP中的“POST”操作。如果要传送一个文件,需要一个@开头的文件名
if(substr($url,0,5)=='https'){
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
}
$content=curl_exec($ch);
curl_close($ch) ;
return $content;
}
/**
* curl模拟http get请求
* @param string $url 请求网址
* @param string|array $data 请求参数
* @return string 网址内容
*/
function curl_get($url,$data=array()){
$url=rtrim($url,'/');
if(!empty($data)){
if(is_array($data)){
$first=true;
foreach($data as $k=>$v){
if($first){
$url.='?';
$first=false;
}else{
$url.='&';
}
$url.="{$k}={$v}";
}
}else{
$data=ltrim('?',$data);
$url.='?'.$data;
}
}
$ch = curl_init($url);
curl_setopt($ch,CURLOPT_HEADER,false);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true) ; // 获取数据返回
if(substr($url,0,5)=='https'){
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
}
$content = curl_exec($ch);
curl_close($ch);
return $content;
}
/**
* 二维数组按键值排序
* @param array $arr 二维数组
* @param string $keys 键值
* @param string $type 升序:asc,降序:desc(else)
* @return array
*/
function array_sort($arr,$keys,$type='asc'){
$keysvalue = $new_array = array();
foreach ($arr as $k=>$v){
$keysvalue[$k] = $v[$keys];
}
if($type == 'asc'){
asort($keysvalue);
}else{
arsort($keysvalue);
}
reset($keysvalue);
foreach ($keysvalue as $k=>$v){
$new_array[$k] = $arr[$k];
}
return $new_array;
}
/**
* 获取客户端ip
* @param number $type
* @return string
*/
function get_client_ip($type = 0) {
$type = $type ? 1 : 0;
static $ip = NULL;
if ($ip !== NULL) return $ip[$type];
if (isset($_SERVER['HTTP_X_FORWARDED_FOR'])) {
$arr = explode(',', $_SERVER['HTTP_X_FORWARDED_FOR']);
$pos = array_search('unknown',$arr);
if(false !== $pos) unset($arr[$pos]);
$ip = trim($arr[0]);
}elseif (isset($_SERVER['HTTP_CLIENT_IP'])) {
$ip = $_SERVER['HTTP_CLIENT_IP'];
}elseif (isset($_SERVER['REMOTE_ADDR'])) {
$ip = $_SERVER['REMOTE_ADDR'];
}
// IP地址合法验证
$long = sprintf("%u",ip2long($ip));
$ip = $long ? array($ip, $long) : array('0.0.0.0', 0);
return $ip[$type];
}
/**
* 将字符串转换为驼峰式命名
*
* @param string $str
* @param boolean $big
* true大驼峰式 false小驼峰式
* @return string
*/
function hump_type($str, $big = false) {
$str = strtolower ( $str );
$big and ucfirst ( $str );
$str = preg_replace ( "/_([a-zA-Z])/e", "strtoupper('\\1')", $str );
return $str;
}
/**
* 遍历删除文件夹
*
* @param string $path
* 文件夹地址
* @return boolean
*/
function delete_files($path) {
if (is_file ( $path )) {
return unlink ( $path );
}
if (is_dir ( $path )) {
$handle = opendir ( $path );
if ($handle != false) {
while ( false !== ($file = readdir ( $handle )) ) {
if (in_array ( $file, array (
'.',
'..'
) ))
continue;
$file = $path . '/' . $file;
if (is_dir ( $file )) {
delete_files ( $file );
} else if (is_file ( $file )) {
if (unlink ( $file ) == false)
return false;
}
}
closedir ( $handle );
}
return true;
}
}
/**
* 截取字符串(可截取utf8的)
*
* @param string $str
* @param int $start
* @param int $length
* @param string $trim
* @param string $charset
* @return string
*/
function sub($str, $start, $length, $trim = "...", $charset = 'UTF-8') {
$length+=2;
if (function_exists ( 'mb_get_info' )) {
$iLength = mb_strlen ( $str, $charset );
$str = mb_substr ( $str, $start, $length, $charset );
if($length< $iLength - $start){
$length-=2;
return mb_substr ( $str, $start, $length, $charset ).$trim;
}else{
return $str;
}
} else {
preg_match_all ( "/[\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]/", $str, $info );
$str = join ( "", array_slice ( $info [0], $start, $length ) );
return ($length < (sizeof ( $info [0] ) - $start)) ? $str . $trim : $str;
}
}
/**
* 游览器友好输出
* 无线参数
*/
function dump() {
$data=func_get_args();
ob_start ();
foreach($data as $v){
var_dump ( $v );
}
$output = ob_get_clean ();
if (! extension_loaded ( 'xdebug' )) {
$output = preg_replace ( '/\]\=\>\n(\s+)/m', '] => ', $output );
$output = '<pre>' . htmlspecialchars ( $output, ENT_QUOTES ) . '</pre>';
}
echo ($output);
}
/**
* 从左边查询子串,找到则删除子串,只删除一次
*
* @param string $str
* @param string $find
* @return string
*/
function substr_left_once($str, $find) {
$start = strpos ( $str, $find );
if (is_bool ( $start )) {
return $str;
} else {
return substr ( $str, $start + strlen ( $find ), strlen ( $str ) );
}
}
/**
* 从右边查询子串,找到则删除子串,只删除一次
*
* @param string $str
* @param string $find
* @return string
*/
function substr_right_once($str, $find) {
$end = strrpos ( $str, $find );
if (is_bool ( $end )) {
return $str;
} else {
return substr ( $str, 0, $end );
}
}
一些常用的PHP函数(整理),布布扣,bubuko.com
一些常用的PHP函数(整理)