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发信人: thinkin (强强), 信区: Linux
标  题: Word Wrap
发信站: BBS 水木清华站 (Thu Feb 17 11:08:30 2000)

<?php
// text_wrap( $text, $max_width, $html_type )
//    $text        -    Text to be formatted (a string)
//    $max_width    -    Column on which to wrap
//    $html_type    -    Should be "PRE" or "BLOCKQUOTE"
//
// Written by Jeffrey D. Webster of Mirada Innovations.
//
// This particular function was written for our clients, so that
// they could embed quotations from persons being interviewed
// without having to pay much attention to how the text was
// entered.
//
// Coming soon:  Full justification function for <PRE> blocks.
//
// Version 1.0
Function text_wrap( $text, $max_width, $html_type )
{
// $cnt keeps track of the position of the last break
$cnt = 0;
if (!strcmp( "PRE", $html_type))
    $line_break =  "\n";
else
    $line_break =  "<BR>\n";
echo  "<$html_type>\n";
for ($i = $max_width; $i < strlen($text); $i += $max_width)
    {
    $width = $max_width;
    while ($text[$i] !=  ' ' && $text[$i] !=  '\n' && $text[i] !=  '\t')
        {
        $i--;
        $width--;
        }
    echo substr($text, $cnt, $width),$line_break;
    $cnt = $i+1;
    }
$last_line = substr($text, $cnt);
if ($last_line[0] !=  ' ')
    echo substr($text, $cnt);
else
    echo substr($text, $cnt+1);
echo  "</$html_type>\n";
}
// Do a little test.
// An arbitrary string ;)
$line =  "\"When considering the use of a server side";
$line =  "$line language, such as php3, you have to weigh";
$line =  "$line the load on your server against the benefits";
$line =  "$line of the language. For many, especially with";
$line =  "$line regards to php3, the benefits are worth the";
$line =  "$line sacrifice. For some tasks it is unimaginable";
$line =  "$line how difficult they would be without server side";
$line =  "$line scripting. There is certainly something to be";
$line =  "$line said for web content that is dynamic -- it";
$line =  "$line keeps people coming back.\" -- The Webmaster";
text_wrap($line, 60,  "BLOCKQUOTE");
?>

--

人生到处知何似？
    应似飞鸿踏雪泥。
        泥上偶然留指爪，
            鸿飞那复计东西！


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