PHP获得中文汉字拼音首字母例子

function getfirstchar($s0){  
 $fchar = ord($s0{0});
 if($fchar >= ord("A") and $fchar <= ord("z") )return strtoupper($s0{0});
 $s1 = iconv("UTF-8","gb2312", $s0);
 $s2 = iconv("gb2312","UTF-8", $s1);
 if($s2 == $s0){$s = $s1;}else{$s = $s0;}
 $asc = ord($s{0}) * 256 + ord($s{1}) - 65536;
 if($asc >= -20319 and $asc <= -20284) return "A";
 if($asc >= -20283 and $asc <= -19776) return "B";
 if($asc >= -19775 and $asc <= -19219) return "C";
 if($asc >= -19218 and $asc <= -18711) return "D";
 if($asc >= -18710 and $asc <= -18527) return "E";
 if($asc >= -18526 and $asc <= -18240) return "F";
 if($asc >= -18239 and $asc <= -17923) return "G";
 if($asc >= -17922 and $asc <= -17418) return "H";
 if($asc >= -17417 and $asc <= -16475) return "J";
 if($asc >= -16474 and $asc <= -16213) return "K";
 if($asc >= -16212 and $asc <= -15641) return "L";
 if($asc >= -15640 and $asc <= -15166) return "M";
 if($asc >= -15165 and $asc <= -14923) return "N";
 if($asc >= -14922 and $asc <= -14915) return "O";
 if($asc >= -14914 and $asc <= -14631) return "P";
 if($asc >= -14630 and $asc <= -14150) return "Q";
 if($asc >= -14149 and $asc <= -14091) return "R";
 if($asc >= -14090 and $asc <= -13319) return "S";
 if($asc >= -13318 and $asc <= -12839) return "T";
 if($asc >= -12838 and $asc <= -12557) return "W";
 if($asc >= -12556 and $asc <= -11848) return "X";
 if($asc >= -11847 and $asc <= -11056) return "Y";
 if($asc >= -11055 and $asc <= -10247) return "Z";
 return null;
}

function pinyin1($zh){
 $ret = "";
    $s1 = iconv("UTF-8","gb2312", $zh);
    $s2 = iconv("gb2312","UTF-8", $s1);
    if($s2 == $zh){$zh = $s1;}
 for($i = 0; $i < strlen($zh); $i++){
  $s1 = substr($zh,$i,1);
  $p = ord($s1);
  if($p > 160){
   $s2 = substr($zh,$i++,2);
   $ret .= getfirstchar($s2);
  }else{
   $ret .= $s1;
  }
 }
 return $ret;
}

上面这个函数就是获取汉字拼音首字母的函数，使用示例：

echo pinyin1('这是中文字符串');

function getfirstchar($s0){  
 $fchar = ord($s0{0});
 if($fchar >= ord("A") and $fchar <= ord("z") )return strtoupper($s0{0});

function getFirstChar($string) {
$firstCharOrd = ord(strtoupper($string{0}));
if (($firstCharOrd >= 65 && $firstCharOrd <= 91) || ($firstCharOrd >= 48 && $firstCharOrd <= 57))
return strtoupper($string{0});

<?php
date_default_timezone_set('Asia/Shanghai');//设置时区为东八区
if(!empty($_POST['username'])){
    $name = $_POST['username'];
    $pwd = $_POST['password'];
    if($name = 'admin' && $pwd = 'admin'){
        setCookie('login_now',date('Y-m-d H:i:s'),time()+3600*24);
        echo "<script>alert('登录成功！');location='login_in.php'</script>";
    }else{
        echo "<script>alert('登录失败！');location='login.php'</script>";
    }
}
?>

<?php
echo $_SERVER["HTTP_USER_AGENT"];

?>

if(strpos($_SERVER['HTTP_USER_AGENT'],"MicroMessenger "))

{

    echo "Hello Weixin";

}

Javascript方法：

function isweixin(){

    var ua = navigator.userAgent.toLowerCase();

    if(ua.match(/MicroMessenger/i)=="micromessenger") {

        return true;

    } else {

        return false;
    }

}

QRcode::png('code data text', 'filename.png'); // creates file

QRcode::png('some othertext 1234'); // creates code image and outputs it directly into browser

public static function png($text, $outfile=false, $level=QR_ECLEVEL_L, $size=3, $margin=4, 
$saveandprint=false) 
{
    $enc = QRencode::factory($level, $size, $margin);
    return $enc->encodePNG($text, $outfile, $saveandprint=false);
} 参数$text表示生成二位的的信息文本；参数$outfile表示是否输出二维码图片文件，默认否；参数$level表示容错率，也就是有被覆盖的区域还能识别，分别是 L（QR_ECLEVEL_L，7%），M（QR_ECLEVEL_M，15%），Q（QR_ECLEVEL_Q，25%），H（QR_ECLEVEL_H，30%）； 参数$size表示生成图片大小，默认是3；参数$margin表示二维码周围边框空白区域间距值，默认是4；参数$saveandprint表示是否保存二维码并显示，默认是不保存显示。

include 'phpqrcode.php';
QRcode::png('http://mingzi.111cn.net'); 上面这段代码就输出了这张二维图