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Justifying Lines of Text

Original text:

But think not that this famous town has
only harpooneers, cannibals, and
bumpkins to show her visitors. Not at
all. Still New Bedford is a queer place.
Had it not been for us whalemen, that
tract of land would this day perhaps
have been in as howling condition as the
coast of Labrador.

Justified text:

But  think not that this famous town has
only    harpooneers,    cannibals,   and
bumpkins  to  show  her visitors. Not at
all. Still New Bedford is a queer place.
Had  it  not  been for us whalemen, that
tract  of  land  would  this day perhaps
have been in as howling condition as the
coast of Labrador.

CODE FOLLOWS


<?php
// Include the header file
include('includes/header.php');
?>


<!DOCTYPE html>
<html lang="en">
<head>
    <title>Justifying Lines of Text</title>
    <link rel="stylesheet" type="text/css" href="common.css" />
</head>
<body>
<h1>Justifying Lines of Text</h1>

<?php

// The text to justify

$myText = <<<END_TEXT
But think not that this famous town has
only harpooneers, cannibals, and
bumpkins to show her visitors. Not at
all. Still New Bedford is a queer place.
Had it not been for us whalemen, that
tract of land would this day perhaps
have been in as howling condition as the
coast of Labrador.

END_TEXT;

$myText = str_replace( "\r\n", "\n", $myText );

$lineLength = 40; // The desired line length
$myTextJustified = "";
$numLines = substr_count( $myText, "\n" );
$startOfLine = 0;

// Move through each line in turn

for ( $i=0; $i <  $numLines; $i++ ) {
    $originalLineLength = strpos( $myText, "\n", $startOfLine ) - $startOfLine;
    $justifiedLine = substr( $myText, $startOfLine, $originalLineLength );
    $justifiedLineLength = $originalLineLength;

    // Keep adding spaces between words until the desired
    // line length is reached

    while ( $i <  $numLines - 1 && $justifiedLineLength <  $lineLength ) {
        for ( $j=0; $j <  $justifiedLineLength; $j++ ) {
            if ( $justifiedLineLength <  $lineLength && $justifiedLine[$j] == " " ) {
                $justifiedLine = substr_replace( $justifiedLine, " ", $j, 0 );
                $justifiedLineLength++;
                $j++;
            }
        }
    }

    // Add the justified line to the string and move to the
    // start of the next line

    $myTextJustified .= "$justifiedLine\n";
    $startOfLine += $originalLineLength + 1;
}

?>

<h2>Original text:</h2>
<pre><?php echo $myText ?></pre>

<h2>Justified text:</h2>
<pre><?php echo $myTextJustified ?></pre>

</body>
</html>

<?php
include('includes/footer.php');
?>

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