Wrap Text in PHP

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You can make text wrap in a browser in various ways, including using tables, iframes, and textareas, but sometimes you need absolute control over the wrapping in terms of the number of characters at which the wrap should occur, regardless of whether the user resizes their browser window.

Using this plug-in, it’s easy to pass a string of text and have it wrapped using <br />
tags. What’s more it can also indent the start of each new paragraph by an amount of your choosing.

This plug-in takes a string variable containing any text and adds <br /> and &nbsp; tags in
the right places to make the text wrap and indent paragraphs. It takes these arguments:

• $text A string variable containing the text to be wrapped

• $width An integer representing the character at which to force word wrapping
• $indent An integer representing the number of characters by which to indent each paragraph start

• $wrapped String variable containing the wrapped text to be returned
• $paragraphs Array containing the separate paragraphs as determined by n characters
• $paragraph String containing an individual paragraph being processed
• $words Array of all words in a paragraph
• $word String containing the current word being processed
• $len Numeric variable containing the length of the current line
• $wlen Numeric variable containing the length of the next word to be processed.

The plug-in works by first splitting the text passed to it into separate paragraphs using the PHP explode() function with an argument of n, which is the newline character. What this function does is return an array of substrings based on splitting the original string each time a n is encountered. The function returns these paragraphs in the array $paragraphs.
A foreach loop is then entered passing $paragraphs as the input, and then each iteration of the loop places one paragraph at a time into the string variable $paragraph.

To transform unwrapped text into wrapped, call the function like this:
echo PIPHP_WrapText($message, 80, 5);
Here $message is the text to be wrapped, 80 is the character at which to force the wrapping, and 5 is the number of characters by which to indent the start of each paragraph.If you don’t want indenting, just set the third parameter to zero.

function PIPHP_WrapText($text, $width, $indent)
{
$wrapped = “”;
$paragraphs = explode(“n”, $text);
foreach($paragraphs as $paragraph)
{
if ($indent > 0) $wrapped .= str_repeat(“&nbsp;”, $indent);
$words = explode(” “, $paragraph);
$len = $indent;
foreach($words as $word)
{
$wlen = strlen($word);
if (($len + $wlen) < $width)
{
$wrapped .= “$word “;
$len += $wlen + 1;
}
else
{
$wrapped = rtrim($wrapped);
$wrapped .= “<br />n$word “;
$len = $wlen;
}
}
$wrapped = rtrim($wrapped);
$wrapped .= “<br />n”;
}
return $wrapped;
}

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