我知道这不是 php 代码，但我认为它可能会有所帮助。这就是我在我编写的应用程序中执行此操作的方式，以检测它是否可以作为 GSM 03.38 发送（您可以对纯文本执行类似的操作）。它有两个翻译表，一个用于普通 GSM，一个用于扩展。然后是一个循环遍历所有字符的函数，检查它是否可以转换。
#define UCS2_TO_GSM_LOOKUP_TABLE_SIZE 0x100
#define NON_GSM 0x80
#define UCS2_GCL_RANGE 24
#define UCS2_GREEK_CAPITAL_LETTER_ALPHA 0x0391
#define EXTEND 0x001B
// note that the ` character is mapped to ' so that all characters that can be typed on
// a standard north american keyboard can be converted to the GSM default character set
static unsigned char Ucs2ToGsm[UCS2_TO_GSM_LOOKUP_TABLE_SIZE] =
{ /*+0x0 +0x1 +0x2 +0x3 +0x4 +0x5 +0x6 +0x7*/
/*0x00*/ NON_GSM, NON_GSM, NON_GSM, NON_GSM, NON_GSM, NON_GSM, NON_GSM, NON_GSM,
/*0x08*/ NON_GSM, NON_GSM, 0x0a, NON_GSM, NON_GSM, 0x0d, NON_GSM, NON_GSM,
/*0x10*/ NON_GSM, NON_GSM, NON_GSM, NON_GSM, NON_GSM, NON_GSM, NON_GSM, NON_GSM,
/*0x18*/ NON_GSM, NON_GSM, NON_GSM, NON_GSM, NON_GSM, NON_GSM, NON_GSM, NON_GSM,
/*0x20*/ 0x20, 0x21, 0x22, 0x23, 0x02, 0x25, 0x26, 0x27,
/*0x28*/ 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
/*0x30*/ 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
/*0x38*/ 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
/*0x40*/ 0x00, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
/*0x48*/ 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
/*0x50*/ 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57,
/*0x58*/ 0x58, 0x59, 0x5a, EXTEND, EXTEND, EXTEND, EXTEND, 0x11,
/*0x60*/ 0x27, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
/*0x68*/ 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
/*0x70*/ 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
/*0x78*/ 0x78, 0x79, 0x7a, EXTEND, EXTEND, EXTEND, EXTEND, NON_GSM,
/*0x80*/ NON_GSM, NON_GSM, NON_GSM, NON_GSM, NON_GSM, NON_GSM, NON_GSM, NON_GSM,
/*0x88*/ NON_GSM, NON_GSM, NON_GSM, NON_GSM, NON_GSM, NON_GSM, NON_GSM, NON_GSM,
/*0x90*/ NON_GSM, NON_GSM, NON_GSM, NON_GSM, NON_GSM, NON_GSM, NON_GSM, NON_GSM,
/*0x98*/ NON_GSM, NON_GSM, NON_GSM, NON_GSM, NON_GSM, NON_GSM, NON_GSM, NON_GSM,
/*0xa0*/ NON_GSM, 0x40, NON_GSM, 0x01, 0x24, 0x03, NON_GSM, 0x5f,
/*0xa8*/ NON_GSM, NON_GSM, NON_GSM, NON_GSM, NON_GSM, NON_GSM, NON_GSM, NON_GSM,
/*0xb0*/ NON_GSM, NON_GSM, NON_GSM, NON_GSM, NON_GSM, NON_GSM, NON_GSM, NON_GSM,
/*0xb8*/ NON_GSM, NON_GSM, NON_GSM, NON_GSM, NON_GSM, NON_GSM, NON_GSM, 0x60,
/*0xc0*/ NON_GSM, NON_GSM, NON_GSM, NON_GSM, 0x5b, 0x0e, 0x1c, 0x09,
/*0xc8*/ NON_GSM, 0x1f, NON_GSM, NON_GSM, NON_GSM, NON_GSM, NON_GSM, 0x60,
/*0xd0*/ NON_GSM, 0x5d, NON_GSM, NON_GSM, NON_GSM, NON_GSM, 0x5c, NON_GSM,
/*0xd8*/ 0x0b, NON_GSM, NON_GSM, NON_GSM, 0x5e, NON_GSM, NON_GSM, 0x1e,
/*0xe0*/ 0x7f, NON_GSM, NON_GSM, NON_GSM, 0x7b, 0x0f, 0x1d, NON_GSM,
/*0xe8*/ 0x04, 0x05, NON_GSM, NON_GSM, 0x07, NON_GSM, NON_GSM, NON_GSM,
/*0xf0*/ NON_GSM, 0x7d, 0x08, NON_GSM, NON_GSM, NON_GSM, 0x7c, NON_GSM,
/*0xf8*/ 0x0c, 0x06, NON_GSM, NON_GSM, 0x7e, NON_GSM, NON_GSM, NON_GSM
};
static unsigned char Ucs2GclToGsm[UCS2_GCL_RANGE + 1] =
{
/*0x0391*/ 0x41, // Alpha A
/*0x0392*/ 0x42, // Beta B
/*0x0393*/ 0x13, // Gamma
/*0x0394*/ 0x10, // Delta
/*0x0395*/ 0x45, // Epsilon E
/*0x0396*/ 0x5A, // Zeta Z
/*0x0397*/ 0x48, // Eta H
/*0x0398*/ 0x19, // Theta
/*0x0399*/ 0x49, // Iota I
/*0x039a*/ 0x4B, // Kappa K
/*0x039b*/ 0x14, // Lambda
/*0x039c*/ 0x4D, // Mu M
/*0x039d*/ 0x4E, // Nu N
/*0x039e*/ 0x1A, // Xi
/*0x039f*/ 0x4F, // Omicron O
/*0x03a0*/ 0X16, // Pi
/*0x03a1*/ 0x50, // Rho P
/*0x03a2*/ NON_GSM,
/*0x03a3*/ 0x18, // Sigma
/*0x03a4*/ 0x54, // Tau T
/*0x03a5*/ 0x59, // Upsilon Y
/*0x03a6*/ 0x12, // Phi
/*0x03a7*/ 0x58, // Chi X
/*0x03a8*/ 0x17, // Psi
/*0x03a9*/ 0x15 // Omega
};
bool Gsm0338Encoding::IsNotGSM( wchar_t szUnicodeChar )
{
bool result = true;
if( szUnicodeChar < UCS2_TO_GSM_LOOKUP_TABLE_SIZE )
{
result = ( Ucs2ToGsm[szUnicodeChar] == NON_GSM );
}
else if( (szUnicodeChar >= UCS2_GREEK_CAPITAL_LETTER_ALPHA) &&
(szUnicodeChar <= (UCS2_GREEK_CAPITAL_LETTER_ALPHA + UCS2_GCL_RANGE)) )
{
result = ( Ucs2GclToGsm[szUnicodeChar - UCS2_GREEK_CAPITAL_LETTER_ALPHA] == NON_GSM );
}
else if( szUnicodeChar == 0x20AC ) // €
{
result = false;
}
return result;
}
bool Gsm0338Encoding::IsGSM( const std::wstring& str )
{
bool result = true;
if( std::find_if( str.begin(), str.end(), IsNotGSM ) != str.end() )
{
result = false;
}
return result;
}