PHP code :--------------------------------------------------------------------------------? Php *** medium-speed version, medium-memory usage, used for large text segments that generally require or have a large number of repeated words * @ text: string to be converted * @ table_file: conversion ing table file name * functionencode_trans1 ($ text, $ tabl PHP code :--------------------------------------------------------------------------------
/**
* Medium speed edition, medium memory usage, used for large text segments that generally require or have a large number of repeated words
* @ Text: string to be converted
* @ Table_file: name of the conversion ing table file
*/
Function encode_trans1 ($ text, $ table_file = 'gb2big5 '){
$ Fp = fopen ($ table_file. '. table', "r ");
$ Cache = array ();
$ Max = strlen ($ text)-1;
For ($ I = 0; $ I <$ max; $ I ++ ){
$ H = ord ($ text [$ I]);
If ($ h> = 160 ){
$ L = ord ($ text [$ I + 1]);
If ($ h = 161 & $ l = 64 ){
$ Text [$ I] = "";
} Else {
$ Cut = substr ($ text, $ I, 2 );
If (! $ Cache [$ cut]) {
Fseek ($ fp, ($ h-160) * 510 + ($ L-1) * 2 );
$ Cache [$ cut] = fread ($ fp, 2 );
}
$ Text [$ I] = $ cache [$ cut] [0];
$ Text [++ $ I] = $ cache [$ cut] [1];
}
}
}
Fclose ($ fp );
Return $ text;
}
/**
* Low-speed version, with the lowest memory usage, when using a few characters
* @ Text: string to be converted
* @ Table_file: name of the conversion ing table file
*/
Function encode_trans2 ($ text, $ table_file = 'gb2big5 '){
$ Fp = fopen ($ table_file. '. table', "r ");
$ Max = strlen ($ text)-1;
For ($ I = 0; $ I <$ max; $ I ++ ){
$ H = ord ($ text [$ I]);
If ($ h> = 160 ){
$ L = ord ($ text [$ I + 1]);
If ($ h = 161 & $ l = 64 ){
$ Gb = "";
} Else {
Fseek ($ fp, ($ h-160) * 510 + ($ L-1) * 2 );
$ Gb = fread ($ fp, 2 );
}
$ Text [$ I] = $ gb [0];
$ Text [$ I + 1] = $ gb [1]; $ I ++;
}
}
Fclose ($ fp );
Return $ text;
}
/**
* High-speed edition with maximum memory usage, used for large text segments
* @ Text: string to be converted
* @ Table_file: name of the conversion ing table file
*/
Function encode_trans3 ($ text, $ table_file = 'gb2big5 '){
$ Fp = fopen ($ table_file. '. table', "r ");
$ Str = fread ($ fp, strlen ($ table_file. '. table '));
Fclose ($ fp );
$ Max = strlen ($ text)-1;
For ($ I = 0; $ I <$ max; $ I ++ ){
$ H = ord ($ text [$ I]);
If ($ h> = 160 ){
$ L = ord ($ text [$ I + 1]);
If ($ h = 161 & $ l = 64 ){
$ Text [$ I] = '';
$ Text [++ $ I] = '';
} Else {
$ Pos = ($ h-160) * 510 + ($ L-1) * 2;
$ Text [$ I] = $ str [$ pos];
$ Text [++ $ I] = $ str [$ pos + 1];
}
}
}
Return $ text;
}
?>
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.