php检查字符串中是否包含7位GSM字符的方法

前端技术 2023/09/07 PHP

本文实例讲述了php检查字符串中是否包含7位GSM字符的方法。分享给大家供大家参考。具体分析如下：

下面的代码检查一个字符串是否包含任何7位GSM字符。它对短信平台上工作的人非常有用。

<?php
function check_gsm($str)
{
  $arr = array(
\"0x00\", \"0x01\", \"0x02\", \"0x03\", \"0x04\", 
\"0x05\",\"0x06\",\"0x07\",\"0x08\",\"0x09\",
\"0x0A\",\"0x0B\",\"0x0C\",\"0x0D\",\"0x0E\",\"0x0F\",\"0x10\",\"0x11\",\"0x12\",\"0x13\",
\"0x14\",\"0x15\",\"0x16\",\"0x17\",\"0x18\",\"0x19\",\"0x1A\",\"0x1B\",\"0x1B0A\",
\"0x1B14\",\"0x1B28\",\"0x1B29\",\"0x1B2F\",\"0x1B3C\",\"0x1B3D\",\"0x1B3E\",
\"0x1B40\",\"0x1B65\",\"0x1C\",\"0x1D\",\"0x1E\",\"0x1F\",\"0x20\",\"0x21\",\"0x22\",
\"0x23\",\"0x24\",\"0x25\",\"0x26\",\"0x27\",\"0x28\",\"0x29\",\"0x2A\",\"0x2B\",\"0x2C\",
\"0x2D\",\"0x2E\",\"0x2F\",\"0x30\",\"0x31\",\"0x32\",\"0x33\",\"0x34\",\"0x35\",\"0x36\",
\"0x37\",\"0x38\",\"0x39\",\"0x3A\",\"0x3B\",\"0x3C\",\"0x3D\",\"0x3E\",\"0x3F\",\"0x40\",
\"0x41\",\"0x42\",\"0x43\",\"0x44\",\"0x45\",\"0x46\",\"0x47\",\"0x48\",\"0x49\",\"0x4A\",
\"0x4B\",\"0x4C\",\"0x4D\",\"0x4E\",\"0x4F\",\"0x50\",\"0x51\",\"0x52\",\"0x53\",\"0x54\",
\"0x55\",\"0x56\",\"0x57\",\"0x58\",\"0x59\",\"0x5A\",\"0x5B\",\"0x5C\",\"0x5D\",\"0x5E\",
\"0x5F\",\"0x60\",\"0x61\",\"0x62\",\"0x63\",\"0x64\",\"0x65\",\"0x66\",\"0x67\",\"0x68\",
\"0x69\",\"0x6A\",\"0x6B\",\"0x6C\",\"0x6D\",\"0x6E\",\"0x6F\",\"0x70\",\"0x71\",\"0x72\",
\"0x73\",\"0x74\",\"0x75\",\"0x76\",\"0x77\",\"0x78\",\"0x79\",\"0x7A\",\"0x7B\",\"0x7C\",
\"0x7D\",\"0x7E\",\"0x7F\");
  $strl = strlen($str);
  for ($i = 0;$i < $strl; $i++)
  {
    $char = \'0x\' . bin2hex(substr($str,$i,1));
    $pos = in_array($char,$arr);
    if ($pos == 1)
    {
      $j++;
    }
  }
  if ($j < $strl)
  {
    return false;
  }
  else
  {
    return true;
  }
}
?>

希望本文所述对大家的php程序设计有所帮助。

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