10

我正在寻找 php 中的代码/库，我将调用它并将文本传递给它，它会告诉我：

  1. 我需要使用什么编码才能将此文本作为 SMS（7、8、16 位）发送
  2. 我将使用多少条短信来发送此文本（计算“分段信息”必须很聪明，例如http://ozekisms.com/index.php?owpn=612）

您是否知道存在任何可以为我执行此操作的代码/库？

同样，我不是在寻找发送 SMS 或转换 SMS，只是为了给我有关文本的信息

更新：

好的，我做了下面的代码，它似乎工作正常，如果你有更好/优化的代码/解决方案/lib，请告诉我

$text = '\@£$¥èéùìòÇØøÅåΔ_ΦΓΛΩΠΨΣΘΞÆæßÉ -./0123456789:;<=>?¡ABCDEFGHIJKLMNOPQRSTUVWXYZÄÖÑܧ¿abcdefghijklmnopqrstuvwxyzäöñüà^{}[~]|€' ; //"\\". //'"';//' ';

print $text . "\n";
print isGsm7bit($text). "\n";
print getNumberOfSMSsegments($text). "\n";




function getNumberOfSMSsegments($text,$MaxSegments=6){
/*
http://en.wikipedia.org/wiki/SMS

Larger content (concatenated SMS, multipart or segmented SMS, or "long SMS") can be sent using multiple messages, 
in which case each message will start with a user data header (UDH) containing segmentation information. 
Since UDH is part of the payload, the number of available characters per segment is lower: 
153 for 7-bit encoding, 
134 for 8-bit encoding and 
67 for 16-bit encoding. 
The receiving handset is then responsible for reassembling the message and presenting it to the user as one long message. 
While the standard theoretically permits up to 255 segments,[35] 6 to 8 segment messages are the practical maximum, 
and long messages are often billed as equivalent to multiple SMS messages. See concatenated SMS for more information. 
Some providers have offered length-oriented pricing schemes for messages, however, the phenomenon is disappearing.
*/
$TotalSegment=0;
$textlen = mb_strlen($text);
if($textlen==0) return false; //I can see most mobile devices will not allow you to send empty sms, with this check we make sure we don't allow empty SMS

if(isGsm7bit($text)){ //7-bit
    $SingleMax=160;
    $ConcatMax=153;
}else{ //UCS-2 Encoding (16-bit)
    $SingleMax=70;
    $ConcatMax=67;
}

if($textlen<=$SingleMax){
    $TotalSegment = 1;
}else{
    $TotalSegment = ceil($textlen/$ConcatMax);
}

if($TotalSegment>$MaxSegments) return false; //SMS is very big.
return $TotalSegment;
}

function isGsm7bit($text){
$gsm7bitChars = "\\\@£\$¥èéùìòÇ\nØø\rÅåΔ_ΦΓΛΩΠΨΣΘΞÆæßÉ !\"#¤%&'()*+,-./0123456789:;<=>?¡ABCDEFGHIJKLMNOPQRSTUVWXYZÄÖÑܧ¿abcdefghijklmnopqrstuvwxyzäöñüà^{}[~]|€";
$textlen = mb_strlen($text);
for ($i = 0;$i < $textlen; $i++){
    if ((strpos($gsm7bitChars, $text[$i])==false) && ($text[$i]!="\\")){return false;} //strpos not able to detect \ in string
}
return true;
}
4

3 回答 3

8

我在这里添加了一些额外的信息，因为之前的答案并不完全正确。

这些是问题：

  • 您需要将当前字符串编码指定为 mb_string，否则可能会被错误地收集
  • 在 7 位 GSM 编码中，基本字符集扩展字符 (^{}\[~]|€) 需要每个 14 位进行编码，因此它们每个都算作两个字符。
  • 在 UCS-2 编码中，您必须警惕 16 位 BMP 之外的表情符号和其他字符，因为...
  • 带有 UCS-2 的 GSM 计算 16 位字符，因此如果您有一个字符 (U+1F4A9)，并且您的运营商和手机偷偷支持 UTF-16 而不仅仅是 UCS-2，它将被编码为 16 的代理对UTF-16 中的 -bit 字符，因此在您的字符串长度中被计为两个 16 位字符。mb_strlen只会将其视为单个字符。

如何计算 7 位字符：

到目前为止，我想出的是以下计算 7 位字符的方法：

// Internal encoding must be set to UTF-8,
// and the input string must be UTF-8 encoded for this to work correctly
protected function count_gsm_string($str)
{
    // Basic GSM character set (one 7-bit encoded char each)
    $gsm_7bit_basic = "@£$¥èéùìòÇ\nØø\rÅåΔ_ΦΓΛΩΠΨΣΘΞÆæßÉ !\"#¤%&'()*+,-./0123456789:;<=>?¡ABCDEFGHIJKLMNOPQRSTUVWXYZÄÖÑܧ¿abcdefghijklmnopqrstuvwxyzäöñüà";

    // Extended set (requires escape code before character thus 2x7-bit encodings per)
    $gsm_7bit_extended = "^{}\\[~]|€&quot;;

    $len = 0;

    for($i = 0; $i < mb_strlen($str); $i++) {
        $c = mb_substr($str, i, 1);
        if(mb_strpos($gsm_7bit_basic, $c) !== FALSE) {
            $len++;
        } else if(mb_strpos($gsm_7bit_extended, $c) !== FALSE) {
            $len += 2;
        } else {
            return -1; // cannot be encoded as GSM, immediately return -1
        }
    }

    return $len;
}

如何计算 16 位字符：

  • 将字符串转换为 UTF-16 表示形式（以使用mb_convert_encoding($str, 'UTF-16', 'UTF-8').
  • 不要转换成 UCS-2，因为这是有损的mb_convert_encoding）
  • 计算字节数count(unpack('C*', $utf16str))并除以 2 以获得计入 GSM 多部分长度的 UCS-2 16 位字符数

*caveat emptor，关于计数字节的一句话：

  • 不要用来strlen计算字节数。虽然它可能有效，但strlen在具有多字节功能的版本的 PHP 安装中经常过载，并且也是未来 API 更改的候选者
  • 避免mb_strlen($str, 'UCS-2')。虽然它目前确实有效，并且会正确返回 2 来表示一堆便便字符（因为它看起来像两个 16 位 UCS-2 字符），但它的稳定伙伴mb_convert_encoding在从 >16 位转换为 UCS-2 时是有损的。谁说 mb_strlen 以后不会有损呢？
  • 避免mb_strlen($str, '8bit') / 2。它目前也可以工作，并在 PHP 文档评论中推荐作为一种计算字节数的方法。但是 IMO 它遇到了与上述 UCS-2 技术相同的问题。
  • 这将最安全的当前方式（IMO）保留为unpack字节数组，并对其进行计数。

那么，这看起来像什么？

// Internal encoding must be set to UTF-8,
// and the input string must be UTF-8 encoded for this to work correctly
protected function count_ucs2_string($str)
{
    $utf16str = mb_convert_encoding($str, 'UTF-16', 'UTF-8');
    // C* option gives an unsigned 16-bit integer representation of each byte
    // which option you choose doesn't actually matter as long as you get one value per byte
    $byteArray = unpack('C*', $utf16str);
    return count($byteArray) / 2;
}

把它们放在一起：

function multipart_count($str)
{
    $one_part_limit = 160; // use a constant i.e. GSM::SMS_SINGLE_7BIT
    $multi_limit = 153; // again, use a constant
    $max_parts = 3; // ... constant

    $str_length = count_gsm_string($str);
    if($str_length === -1) {
        $one_part_limit = 70; // ... constant
        $multi_limit = 67; // ... constant
        $str_length = count_ucs2_string($str);
    }

    if($str_length <= $one_part_limit) {
        // fits in one part
        return 1;
    } else if($str_length > ($max_parts * $multi_limit) {
        // too long
        return -1; // or throw exception, or false, etc.
    } else {
        // divide the string length by multi_limit and round up to get number of parts
        return ceil($str_length / $multi_limit);
    }
}

把它变成图书馆...

https://bitbucket.org/solvam/smstools

于 2015-09-04T03:54:30.207 回答
4

The best solution I have so far:

$text = '\@£$¥èéùìòÇØøÅåΔ_ΦΓΛΩΠΨΣΘΞÆæßÉ -./0123456789:;<=>?¡ABCDEFGHIJKLMNOPQRSTUVWXYZÄÖÑܧ¿abcdefghijklmnopqrstuvwxyzäöñüà^{}[~]|€' ; //"\\". //'"';//' ';

print $text . "\n";
print isGsm7bit($text). "\n";
print getNumberOfSMSsegments($text). "\n";

function getNumberOfSMSsegments($text,$MaxSegments=6){
/*
http://en.wikipedia.org/wiki/SMS

Larger content (concatenated SMS, multipart or segmented SMS, or "long SMS") can be sent using multiple messages, 
in which case each message will start with a user data header (UDH) containing segmentation information. 
Since UDH is part of the payload, the number of available characters per segment is lower: 
153 for 7-bit encoding, 
134 for 8-bit encoding and 
67 for 16-bit encoding. 
The receiving handset is then responsible for reassembling the message and presenting it to the user as one long message. 
While the standard theoretically permits up to 255 segments,[35] 6 to 8 segment messages are the practical maximum, 
and long messages are often billed as equivalent to multiple SMS messages. See concatenated SMS for more information. 
Some providers have offered length-oriented pricing schemes for messages, however, the phenomenon is disappearing.
*/
$TotalSegment=0;
$textlen = mb_strlen($text);
if($textlen==0) return false; //I can see most mobile devices will not allow you to send empty sms, with this check we make sure we don't allow empty SMS

if(isGsm7bit($text)){ //7-bit
    $SingleMax=160;
    $ConcatMax=153;
}else{ //UCS-2 Encoding (16-bit)
    $SingleMax=70;
    $ConcatMax=67;
}

if($textlen<=$SingleMax){
    $TotalSegment = 1;
}else{
    $TotalSegment = ceil($textlen/$ConcatMax);
}

if($TotalSegment>$MaxSegments) return false; //SMS is very big.
return $TotalSegment;
}

function isGsm7bit($text){
$gsm7bitChars = "\\\@£\$¥èéùìòÇ\nØø\rÅåΔ_ΦΓΛΩΠΨΣΘΞÆæßÉ !\"#¤%&'()*+,-./0123456789:;<=>?¡ABCDEFGHIJKLMNOPQRSTUVWXYZÄÖÑܧ¿abcdefghijklmnopqrstuvwxyzäöñüà^{}[~]|€";
$textlen = mb_strlen($text);
for ($i = 0;$i < $textlen; $i++){
    if ((strpos($gsm7bitChars, $text[$i])==false) && ($text[$i]!="\\")){return false;} //strpos not     able to detect \ in string
}
return true;
}
于 2011-12-03T20:10:02.770 回答
-2
  • 第 1 页：160 字节
  • 第 2 页：146 字节
  • 第 3 页：153 字节
  • 第 4 页：153 字节
  • 第 5 页：153 字节，....

所以不管语言：

// strlen($text) show bytes 

           $count = 0;
           $len = strlen($text);
                if ($len > 306) {
                    $len = $len - 306;
                    $count = floor($len / 153) + 3;
                } else if($len>160){
                    $count = 2;
                }else{
                    $count = 1;
                }
于 2020-07-02T13:45:30.837 回答