php中获取中文首字母程序代码

例

<?php
$limit = array( //gb2312 拼音排序
    array(45217,45252), //A
    array(45253,45760), //B
    array(45761,46317), //C
    array(46318,46825), //D
    array(46826,47009), //E
    array(47010,47296), //F
    array(47297,47613), //G
    array(47614,48118), //H
    array(0,0),         //I
    array(48119,49061), //J
    array(49062,49323), //K
    array(49324,49895), //L
    array(49896,50370), //M
    array(50371,50613), //N
    array(50614,50621), //O
    array(50622,50905), //P
    array(50906,51386), //Q
    array(51387,51445), //R
    array(51446,52217), //S
    array(52218,52697), //T
    array(0,0),         //U
    array(0,0),         //V
    array(52698,52979), //W
    array(52980,53688), //X
    array(53689,54480), //Y
    array(54481,55289), //Z
);

$str="A:这是一个测试程序1";
$str= iconv("UTF-8","gb2312", $str);
echo $str."</br>";
$i=0;
while($i<strlen($str) ) {
    $tmp=bin2hex(substr($str,$i,1));
    if($tmp>='B0'){ //汉字的开始
        $t=getLetter(hexdec(bin2hex(substr($str,$i,2))));
        printf("%c",$t==-1 ? '*' : $t );
        $i+=2;
    }
    else{
        printf("%s",substr($str,$i,1));
        $i++;
    }
}

function getLetter($num){
    global $limit;
    $char_index=65;
    foreach($limit as $k=>$v){
        if($num>=$v[0] && $num<=$v[1]){
            $char_index+=$k;
            return $char_index;
        }
    }
    return -1;
}
?>

$urlToEncode="http://gz.altmi.com";
generateQRfromGoogle($urlToEncode);
function generateQRfromGoogle($chl,$widhtHeight ='150',$EC_level='L',$margin='0')
{
    $url = urlencode($url); 
    echo '<img src="http://chart.apis.google.com/chart?chs='.$widhtHeight.'x'.$widhtHeight.'&cht=qr&chld='.$EC_level.'|'.$margin.'&chl='.$chl.'" alt="QR code" widhtHeight="'.$size.'" widhtHeight="'.$size.'"/>';
}

// QR Code + Logo Generator QR图片中间加logo
$data = isset($_GET['data']) ? $_GET['data'] : 'http://www.111cn.net';
$size = isset($_GET['size']) ? $_GET['size'] : '130x130';
$logo = isset($_GET['logo']) ? $_GET['logo'] : './20130128160755.jpg';//中间那logo图

$chl = urlencode($logo);
$png = "http://chart.googleapis.com/chart?chs=$size&cht=qr&chl=$chl&chld=L|1&choe=UTF-8";
$QR = imagecreatefrompng($png);//外面那QR图
if ($logo !== FALSE) {
  $logo = imagecreatefromstring(file_get_contents($logo));
  $QR_width = imagesx($QR);
  $QR_height = imagesy($QR);
  $logo_width = imagesx($logo);
  $logo_height = imagesy($logo);
  $logo_qr_width = $QR_width/5;
  $scale = $logo_width/$logo_qr_width;
  $logo_qr_height = $logo_height/$scale;
  $from_width = ($QR_width-$logo_qr_width)/2;
  imagecopyresampled($QR, $logo, $from_width, $from_width, 0, 0, $logo_qr_width, $logo_qr_height, $logo_width, $logo_height);
}
header('Content-type: image/png');
imagepng($QR);
imagedestroy($QR);

$memcache_obj = memcache_connect(”localhost”, 11211);

memcache_add($memcache_obj, ’var_key’, ’test variable’, false, 30);

$memcache_obj->add(’var_key’, ’test variable’, false, 30);

<?php
//连接
$mem = new Memcache;
$mem->connect(“127.0.0.1″, 11211) or die (“Could not connect”);
//显示版本
$version = $mem->getVersion();
echo “Memcached Server version: “.$version.”<br>”;
//保存数据
$mem->set(‘key1′, ‘This is first value’, 0, 60);
$val = $mem->get(‘key1′);
echo “Get key1 value: ” . $val .”<br>”;
//替换数据
$mem->replace(‘key1′, ‘This is replace value’, 0, 60);
$val = $mem->get(‘key1′);
echo “Get key1 value: ” . $val . “<br>”;
//保存数组
$arr = array(‘aaa’, ‘bbb’, ‘ccc’, ‘ddd’);
$mem->set(‘key2′, $arr, 0, 60);
$val2 = $mem->get(‘key2′);
echo “Get key2 value: “;
print_r($val2);
echo “<br>”;
//删除数据
$mem->delete(‘key1′);
$val = $mem->get(‘key1′);
echo “Get key1 value: ” . $val . “<br>”;
//清除所有数据
$mem->flush();
$val2 = $mem->get(‘key2′);
echo “Get key2 value: “;
print_r($val2);
echo “<br>”;
//关闭连接
$mem->close();
?>

/*socket收发数据
    @host(string) socket服务器IP
    @post(int) 端口
    @str(string) 要发送的数据
    @back 1|0 socket端是否有数据返回
    返回true|false|服务端数据
*/
function sendSocketMsg($host,$port,$str,$back=0){
        $socket = socket_create(AF_INET,SOCK_STREAM,0);
        if ($socket < 0) return false;
        $result = @socket_connect($socket,$host,$port);
        if ($result == false)return false;
        socket_write($socket,$str,strlen($str));
       
        if($back!=0){
            $input = socket_read($socket,1024);
            socket_close ($socket);   
            return $input;
        }else{
            socket_close ($socket);   
            return true;   
        }   
}