note 103671 deleted from function.wordwrap by danbrown
| From: | danbrown@php.net | Date: | Wed, 27 Apr 2011 15:12:07 +0000 |
| Subject: | note 103671 deleted from function.wordwrap by danbrown | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-179197@lists.php.net to get a copy of this message | ||
Note Submitter: havelangep at hotmail dot com
----
An updated version of the justify function writen by thomas at toghome dot com.
This version should work on PHP5 (fixed issues with array index type and multibyte sequences)
<?php
// Usage:
//
// echo stringTools::justify( $str, 80 ) . "\n";
//
class stringTools {
const PAD_LEFT = 1; // More spaces are added on the left of the line
const PAD_RIGHT = 2; // More spaces are added on the right of the line
const PAD_BOTH = 4; // Tries to evenly distribute the padding
const PAD_AVERAGE = 8; // Tries to position based on a mix of the three algorithms
/**
* @param string $input
* @param int $width
* @param int $mode
* @return string
* @author MetaNull
*/
function justify($input, $width, $mode = self::PAD_BOTH){
$final = '';
// We want to have n characters wide of text per line.
// Use PHP's wordwrap feature to give us a rough estimate.
$justified = self::wordwrap($input, $width, "\n", false);
$justified = explode("\n", $justified);
// Check each line is the required width. If not, pad it with spaces between words.
foreach($justified as $line){
if(strlen($line) != $width){
// Split by word, then glue together
$words = preg_split('/ /', $line);
$diff = $width - mb_strlen($line);
while($diff > 0) {
// Process the word at this diff
$wordsIndex = null;
if($mode == self::PAD_BOTH) {
$wordsIndex = (int)($diff / count($words));
} else
if($mode == self::PAD_AVERAGE) {
$wordsIndex = (int)((($diff / count($words)) + ($diff % count($words)) + (count($words) -
($diff % count($words)))) / 3);
} else
if($mode == self::PAD_LEFT) {
$wordsIndex = (int)($diff % count($words));
} else
if($mode == self::PAD_RIGHT) {
$wordsIndex = (int)(count($words) - ($diff % count($words)));
}
if( null !== $wordsIndex ) {
if( !array_key_exists($wordsIndex, $words )) {
$words[$wordsIndex] = '';
}
$words[$wordsIndex] .= ' ';
}
// Next diff, please...
$diff--;
}
} else {
$words = preg_split('/ /', $line);
}
$final .= implode(' ', $words) . "\n";
}
// Return the final string
return $final;
}
public static function wordwrap( $string, $width, $break ) {
return wordwrap($string,$width,$break);
}
}
?>