text_word_wrap()

Complexity

Conditions	12
Paths	128

Size

Total Lines	67
Code Lines	29

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

<?php
    function text_word_wrap($string, $limit = 76)
    {
        // Set the character limit
        is_numeric($limit) OR $limit = 76;

        // Reduce multiple spaces
        $string = preg_replace('| +|', ' ', $string);

        // Standardize newlines
        if (strpos($string, "\r") !== false) {
            $string = str_replace(["\r\n", "\r"], "\n", $string);
        }

        // If the current word is surrounded by {unwrap} tags we'll
        // strip the entire chunk and replace it with a marker.
        $unwrap = [];
        if (preg_match_all('|\{unwrap\}(.+?)\{/unwrap\}|s', $string, $matches)) {
            for ($i = 0, $c = count($matches[ 0 ]); $i < $c; $i++) {
                $unwrap[] = $matches[ 1 ][ $i ];
                $string = str_replace($matches[ 0 ][ $i ], '{{unwrapped' . $i . '}}', $string);
            }
        }

        // Use PHP's native function to do the initial wordwrap.
        // We set the cut flag to FALSE so that any individual words that are
        // too long get left alone. In the next step we'll deal with them.
        $string = wordwrap($string, $limit, "\n", false);

        // Split the string into individual lines of text and cycle through them
        $output = '';
        foreach (explode("\n", $string) as $line) {
            // Is the line within the allowed character count?
            // If so we'll join it to the output and continue
            if (mb_strlen($line) <= $limit) {
                $output .= $line . "\n";
                continue;
            }

            $temp = '';
            while (mb_strlen($line) > $limit) {
                // If the over-length word is a URL we won't wrap it
                if (preg_match('!\[url.+\]|://|www\.!', $line)) {
                    break;
                }

                // Trim the word down
                $temp .= mb_substr($line, 0, $limit - 1);
                $line = mb_substr($line, $limit - 1);
            }

            // If $temp contains data it means we had to split up an over-length
            // word into smaller chunks so we'll add it back to our current line
            if ($temp !== '') {
                $output .= $temp . "\n" . $line . "\n";
            } else {
                $output .= $line . "\n";
            }
        }

        // Put our markers back
        if (count($unwrap) > 0) {
            foreach ($unwrap as $key => $val) {
                $output = str_replace('{{unwrapped' . $key . '}}', $val, $output);
            }
        }

        return $output;
    }
}