php常用方法总结（持续更新中）

港控/mmm° 2022-08-21 05:46 253阅读 0赞

1.  /\*\*  
     \* 检查浏览器是否是移动端  
     \* @return boolean  
     \* true：手机浏览  
     \* false：pc浏览  
     \*/  
    function isMobile()\{  
    // 如果有HTTP\_X\_WAP\_PROFILE则一定是移动设备  
    if (isset ($\_SERVER\['HTTP\_X\_WAP\_PROFILE'\]))  
    return true;  
    //此条摘自TPM智能切换模板引擎，适合TPM开发  
    if(isset ($\_SERVER\['HTTP\_CLIENT'\]) &&'PhoneClient'==$\_SERVER\['HTTP\_CLIENT'\])  
    return true;  
    //如果via信息含有wap则一定是移动设备,部分服务商会屏蔽该信息  
    if (isset ($\_SERVER\['HTTP\_VIA'\]))  
    //找不到为flase,否则为true  
    return stristr($\_SERVER\['HTTP\_VIA'\], 'wap') ? true : false;  
    //判断手机发送的客户端标志,兼容性有待提高  
    if (isset ($\_SERVER\['HTTP\_USER\_AGENT'\])) \{  
    $clientkeywords = array(  
    'nokia','sony','ericsson','mot','samsung','htc','sgh','lg','sharp','sie-','philips','panasonic','alcatel','lenovo','iphone','ipod','blackberry','meizu','android','netfront','symbian','ucweb','windowsce','palm','operamini','operamobi','openwave','nexusone','cldc','midp','wap','mobile'  
    );  
    //从HTTP\_USER\_AGENT中查找手机浏览器的关键字  
    if (preg\_match("/(" . implode('|', $clientkeywords) . ")/i", strtolower($\_SERVER\['HTTP\_USER\_AGENT'\]))) \{  
    return true;  
    \}  
    \}  
    //协议法，因为有可能不准确，放到最后判断  
    if (isset ($\_SERVER\['HTTP\_ACCEPT'\])) \{  
    // 如果只支持wml并且不支持html那一定是移动设备  
    // 如果支持wml和html但是wml在html之前则是移动设备  
    if ((strpos($\_SERVER\['HTTP\_ACCEPT'\], 'vnd.wap.wml') !== false) && (strpos($\_SERVER\['HTTP\_ACCEPT'\], 'text/html') === false || (strpos($\_SERVER\['HTTP\_ACCEPT'\], 'vnd.wap.wml') < strpos($\_SERVER\['HTTP\_ACCEPT'\], 'text/html')))) \{  
    return true;  
    \}  
    \}  
    return false;  
    \}  
    
2.  /\*\*  
    \* 获取当前页面完整URL地址  
     \* @return string 完整URL地址  
    \*/  
    function get\_url() \{  
    $sys\_protocal = isset($\_SERVER\['SERVER\_PORT'\]) && $\_SERVER\['SERVER\_PORT'\] == '443' ? 'https://' : 'http://';  
        $php\_self = $\_SERVER\['PHP\_SELF'\] ? $\_SERVER\['PHP\_SELF'\] : $\_SERVER\['SCRIPT\_NAME'\];  
        $path\_info = isset($\_SERVER\['PATH\_INFO'\]) ? $\_SERVER\['PATH\_INFO'\] : '';  
        $relate\_url = isset($\_SERVER\['REQUEST\_URI'\]) ? $\_SERVER\['REQUEST\_URI'\] : $php\_self.(isset($\_SERVER\['QUERY\_STRING'\]) ? '?'.$\_SERVER\['QUERY\_STRING'\] : $path\_info);  
        return $sys\_protocal.(isset($\_SERVER\['HTTP\_HOST'\]) ? $\_SERVER\['HTTP\_HOST'\] : '').$relate\_url;  
    \}  
    
3.  /\*\*  
    \* 计算距现在的时间  
     \* @return string 时间  
    \*/  
    function computeTime($time)\{  
    $disparity = time() - $time;  
    switch($disparity)\{  
    case $disparity>86400:  
    return floor($disparity/86400).'天前';  
    break;  
    case $disparity>3600:  
    return floor($disparity/3600).'小时前';  
    break;  
    case $disparity>60:  
    return floor($disparity/60).'分钟前';  
    break;  
    default:  
    return $disparity.'秒前';  
    break;  
    \}  
    \}  
    
4.  /\*\*  
     \* 生成数字验证码  
     \* @param number $length：长度  
     \* @return string $key：手机验证码  
     \*/  
    function randomkeys($length)\{  
    $pattern='0123456789';  
    for($i=0;$i<$length;$i++)\{  
    $key .= $pattern\{mt\_rand(0,9)\};    //生成php随机数  
    \}  
    return $key;  
    \}  
    
5.  /\*\*  
     \* 解压rar压缩包，需要服务器配置支持  
     \* @param $zipPath：压缩包原路径  
     \* @param $zipToPath：压缩包解压路径  
     \*/  
    function doRar($zipPath,$zipToPath)\{  
    $rar\_file = rar\_open($zipPath) or die("Can't open Rar archive");  
    $lists = rar\_list($rar\_file);  
    foreach ($lists as $rar) \{  
    $rar->extract($zipToPath);  
    \}  
    rar\_close($rar\_file);  
    \}  
    
6.