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<?
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function split_line($str,$prefix="",$width=76)
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{
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if ($width<=0)
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return $str;
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$result = "";
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$len = mb_strlen($str,'UTF-8');
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$prefix_len = mb_strlen($prefix,'UTF-8');
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$line = $prefix;
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$line_len = $prefix_len;
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for($i=0;$i<$len;$i++)
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{
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$c = mb_substr($str,$i,1,'UTF-8');
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$line.=$c;
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// Each UTF-8 CJK character should use two character length for display
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$line_len += (strlen($c) <= 2 ? 1 : 2);
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if ($line_len >= $width)
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{
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$result .= ($line . "\n");
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$line = $prefix;
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$line_len = $prefix_len;
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}
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}
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$result .= ($line . "\n");
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return $result;
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}
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function str_process($str,$prefix="",$width=76)
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{
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$result = "";
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$lines = explode("\n",str_replace("\r\n","\n",$str));
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foreach($lines as $tmp => $line)
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{
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$result .= split_line($line,$prefix,$width);
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}
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return $result;
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}
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function str_b_lines($str,$max_line=1)
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{
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$result = "";
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$l = 0;
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$lines = explode("\n",str_replace("\r\n","\n",$str));
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foreach($lines as $tmp => $line)
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{
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$result .= ($line."\n");
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$l += (mb_strlen($line,'UTF-8')/128 + 1);
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if ($l >= $max_line)
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break;
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}
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return $result;
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}
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?>
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