codemasher/gb2312-table.php

## gb2312-table.php
<?php
/**
 * gb2312-table.php
 *
 * @see https://en.wikipedia.org/wiki/GB_2312
 * @see http://www.herongyang.com/GB2312/Introduction-of-GB2312.html
 * @see https://en.wikipedia.org/wiki/GBK_(character_encoding)#Encoding
 *
 * @created      30.01.2023
 * @author       smiley <smiley@chillerlan.net>
 * @copyright    2023 smiley
 * @license      MIT
 */

$list = [];

for($byte1 = 0xa1; $byte1 < 0xf8; $byte1 += 0x1){

	if($byte1 > 0xa9 && $byte1 < 0xb0){
		continue;
	}

	$list[$byte1] = array_fill(0xa0, 96, null); // 0xa1 - 0xfe

	for($byte2 = 0xa1; $byte2 < 0xff; $byte2++){
		$list[$byte1][$byte2] = chr($byte1).chr($byte2);
	}

}


// output
if(php_sapi_name() !== 'cli'){

	echo '<!doctype html>
<html lang="cn">
<head>
<meta charset="UTF-8">
<title>GB2312 Hanzi Code Table</title>
</head>
<body>
';

	foreach($list as $chars){
		$chars = array_map(fn($chr) => ($chr !== null ? mb_convert_encoding($chr, 'UTF-8', 'GB2312') : null), $chars);

		$rows = [];

		foreach(array_chunk($chars, 16, true) as $row){
			$rows[] = sprintf('<td>%s</td>', implode('</td><td>', $row));
		}

		printf("<table><tr>%s</tr></table>\n", implode('</tr><tr>', $rows));
	}

	echo '</body>';
}
else{

	foreach($list as $chars){
		$chars = array_map(fn($chr) => ($chr !== null ? mb_convert_encoding($chr, 'UTF-8', 'GB2312') : null), $chars);

		$rows = [];

		foreach(array_chunk($chars, 16, true) as $row){
			$rows[] = implode(' ', $row);
		}

		printf("%s\n", implode("\n", $rows));
	}

}


exit;
	<?php
	/**
	* gb2312-table.php
	*
	* @see https://en.wikipedia.org/wiki/GB_2312
	* @see http://www.herongyang.com/GB2312/Introduction-of-GB2312.html
	* @see https://en.wikipedia.org/wiki/GBK_(character_encoding)#Encoding
	*
	* @created 30.01.2023
	* @author smiley <smiley@chillerlan.net>
	* @copyright 2023 smiley
	* @license MIT
	*/

	$list = [];

	for($byte1 = 0xa1; $byte1 < 0xf8; $byte1 += 0x1){

	if($byte1 > 0xa9 && $byte1 < 0xb0){
	continue;
	}

	$list[$byte1] = array_fill(0xa0, 96, null); // 0xa1 - 0xfe

	for($byte2 = 0xa1; $byte2 < 0xff; $byte2++){
	$list[$byte1][$byte2] = chr($byte1).chr($byte2);
	}

	}


	// output
	if(php_sapi_name() !== 'cli'){

	echo '<!doctype html>
	<html lang="cn">
	<head>
	<meta charset="UTF-8">
	<title>GB2312 Hanzi Code Table</title>
	</head>
	<body>
	';

	foreach($list as $chars){
	$chars = array_map(fn($chr) => ($chr !== null ? mb_convert_encoding($chr, 'UTF-8', 'GB2312') : null), $chars);

	$rows = [];

	foreach(array_chunk($chars, 16, true) as $row){
	$rows[] = sprintf('<td>%s</td>', implode('</td><td>', $row));
	}

	printf("<table><tr>%s</tr></table>\n", implode('</tr><tr>', $rows));
	}

	echo '</body>';
	}
	else{

	foreach($list as $chars){
	$chars = array_map(fn($chr) => ($chr !== null ? mb_convert_encoding($chr, 'UTF-8', 'GB2312') : null), $chars);

	$rows = [];

	foreach(array_chunk($chars, 16, true) as $row){
	$rows[] = implode(' ', $row);
	}

	printf("%s\n", implode("\n", $rows));
	}

	}


	exit;