php 一些经常用到的方法

获取当前url地址

/**
 * 获取当前url
 * @author Red
 * @date
 * @return string
 */
function getRequestURL() {
    if (!isset($_SERVER['HTTPS']) ||
        $_SERVER['HTTPS'] == 'off' ||
        $_SERVER['HTTPS'] == ''
    ) {
        $scheme = 'http';
    } else {
        $scheme = 'https';
    }
    $host = $_SERVER['SERVER_NAME'];
    $port = $_SERVER['SERVER_PORT'];
    $path = $_SERVER['SCRIPT_NAME'];
    $url  = $_SERVER['REQUEST_URI'];

    return $scheme . '://' . $host . (($port == 80) ? '' : ':' . $port) . $url;
}

　对象转换成数组　

/**
 * 对象转换成数组
 * @author Red
 * @date 2016年1月15日15:32:07
 * @param $obj
 * @return mixed
 */
function object_to_array($obj) {
    $_arr = is_object($obj) ? get_object_vars($obj) :$obj;
    foreach ($_arr as $key=>$val){
        $val = (is_array($val) || is_object($val)) ?object_to_array($val):$val;
        $arr[$key] = $val;
    }
    return $arr;
}

　　curl获取文件内容

/**
 * CURL 获取文件内容
 *
 * 用法同 file_get_contents
 *
 * @param string
 * @param integerr
 * @return string
 */
function curl_get_contents($url, $timeout = 10)
{
	if (!function_exists('curl_init'))
	{
		throw new Zend_Exception('CURL not support');
	}

	$curl = curl_init();

	curl_setopt($curl, CURLOPT_URL, $url);
	curl_setopt($curl, CURLOPT_TIMEOUT, $timeout);
	curl_setopt($curl, CURLOPT_RETURNTRANSFER, TRUE);
	curl_setopt($curl, CURLOPT_HEADER, FALSE);
	curl_setopt($curl, CURLOPT_FOLLOWLOCATION, TRUE);
	
	if (defined('WECENTER_CURL_USERAGENT'))
	{
		curl_setopt($curl, CURLOPT_USERAGENT, WECENTER_CURL_USERAGENT);
	}
	else
	{
		curl_setopt($curl, CURLOPT_USERAGENT, 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_4) AppleWebKit/600.7.12 (KHTML, like Gecko) Version/8.0.7 Safari/600.7.12');
	}
	
	if (substr($url, 0, 8) == 'https://')
	{
		curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);
		curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE);

		curl_setopt($curl, CURLOPT_SSLVERSION, CURL_SSLVERSION_TLSv1);
	}

	$result = curl_exec($curl);

	curl_close($curl);

	return $result;
}

　　处理2038时间问题

$date = '2090-10-01';
$datetime = new DateTime($date);
echo $datetime->format('Y-m-d H:i');

　　16进制转字符串

function hex2str($hex){
    $str = '';
    $arr = str_split($hex, 2);
    foreach($arr as $bit){
        $str .= chr(hexdec($bit));
    }
    return $str;
}

字符串转16进制

function str2hex($str){
    $hex = '';
    for($i=0,$length=mb_strlen($str); $i<$length; $i++){
        $hex .= dechex(ord($str{$i}));
    }
    return $hex;
}

根据身份证号码算出年龄

function get_age_by_id_card($idCard)
{
    $date  = strtotime(substr($idCard, 6, 8));//获得出生年月日的时间戳
    $today = strtotime('today');//获得今日的时间戳
    $diff  = floor(($today - $date) / 86400 / 365);//得到两个日期相差的大体年数
    //strtotime加上这个年数后得到那日的时间戳后与今日的时间戳相比
    return strtotime(substr($idCard, 6, 8) . ' +' . $diff . 'years') > $today ? ($diff + 1) : $diff;
}

function get_deadline($endTime, $starTime = 0)
{
    //计算天数
    $timeDiff = $endTime - ($starTime ? $starTime : time());
    $days     = intval($timeDiff / 86400);
    //计算小时数
    $remain = $timeDiff % 86400;
    $hours  = intval($remain / 3600);
    //计算分钟数
    $remain = $remain % 3600;
    $mins   = intval($remain / 60);

    return $days . "天" . $hours . "小时" . $mins . "分钟";
}

时间距离