Page 122 - Beginning PHP 5.3

Part II: Learning the Language
$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 >

Now run the script by visiting its URL in your Web browser. You should see a page like Figure 5 - 2 . The
first block of text is the original, unjustified text with a ragged right - hand margin. The second block of
text is the justified version with both left and right margins aligned.

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