Text helper class. Provides simple methods for working with text.
Class declared in SYSPATH/classes/Text.php on line 3.
array $unitsnumber units and text equivalents
array(31) ( 1000000000 => string(7) "billion" 1000000 => string(7) "million" 1000 => string(8) "thousand" 100 => string(7) "hundred" 90 => string(6) "ninety" 80 => string(6) "eighty" 70 => string(7) "seventy" 60 => string(5) "sixty" 50 => string(5) "fifty" 40 => string(5) "forty" 30 => string(6) "thirty" 20 => string(6) "twenty" 19 => string(8) "nineteen" 18 => string(8) "eighteen" 17 => string(9) "seventeen" 16 => string(7) "sixteen" 15 => string(7) "fifteen" 14 => string(8) "fourteen" 13 => string(8) "thirteen" 12 => string(6) "twelve" 11 => string(6) "eleven" 10 => string(3) "ten" 9 => string(4) "nine" 8 => string(5) "eight" 7 => string(5) "seven" 6 => string(3) "six" 5 => string(4) "five" 4 => string(4) "four" 3 => string(5) "three" 2 => string(3) "two" 1 => string(3) "one" )
Alternates between two or more strings.
echo Text::alternate('one', 'two'); // "one"
echo Text::alternate('one', 'two'); // "two"
echo Text::alternate('one', 'two'); // "one"
Note that using multiple iterations of different strings may produce unexpected results.
stringpublic static function alternate()
{
static $i;
if (func_num_args() === 0) {
$i = 0;
return '';
}
$args = func_get_args();
return $args[($i++ % count($args))];
}Converts text email addresses and anchors into links. Existing links will not be altered.
echo Text::auto_link($text);
This method is not foolproof since it uses regex to parse HTML.
string
$text
required - Text to auto link stringpublic static function auto_link($text)
{
// Auto link emails first to prevent problems with "[email protected]"
return Text::auto_link_urls(Text::auto_link_emails($text));
}Converts text email addresses into links. Existing links will not be altered.
echo Text::auto_link_emails($text);
This method is not foolproof since it uses regex to parse HTML.
string
$text
required - Text to auto link stringpublic static function auto_link_emails($text)
{
// Find and replace all email addresses that are not part of an existing html mailto anchor
// Note: The "58;" negative lookbehind prevents matching of existing encoded html mailto anchors
// The html entity for a colon (:) is : or : or : etc.
return preg_replace_callback('~\b(?<!href="mailto:|58;)(?!\.)[-+_a-z0-9.]++(?<!\.)@(?![-.])[-a-z0-9.]+(?<!\.)\.[a-z]{2,6}\b(?!</a>)~i', 'Text::_auto_link_emails_callback', $text);
}Converts text anchors into links. Existing links will not be altered.
echo Text::auto_link_urls($text);
This method is not foolproof since it uses regex to parse HTML.
string
$text
required - Text to auto link stringpublic static function auto_link_urls($text)
{
// Find and replace all http/https/ftp/ftps links that are not part of an existing html anchor
$text = preg_replace_callback('~\b(?<!href="|">)(?:ht|f)tps?://[^<\s]+(?:/|\b)~i', 'Text::_auto_link_urls_callback1', $text);
// Find and replace all naked www.links.com (without http://)
return preg_replace_callback('~\b(?<!://|">)www(?:\.[a-z0-9][-a-z0-9]*+)+\.[a-z]{2,6}[^<\s]*\b~i', 'Text::_auto_link_urls_callback2', $text);
}Automatically applies "p" and "br" markup to text. Basically nl2br on steroids.
echo Text::auto_p($text);
This method is not foolproof since it uses regex to parse HTML.
string
$str
required - Subject boolean
$br
= bool TRUE - Convert single linebreaks to stringpublic static function auto_p($str, $br = true)
{
// Trim whitespace
if (($str = trim($str)) === '')
return '';
// Standardize newlines
$str = str_replace(["\r\n", "\r"], "\n", $str);
// Trim whitespace on each line
$str = preg_replace('~^[ \t]+~m', '', $str);
$str = preg_replace('~[ \t]+$~m', '', $str);
// The following regexes only need to be executed if the string contains html
if ($html_found = (strpos($str, '<') !== false)) {
// Elements that should not be surrounded by p tags
$no_p = '(?:p|div|h[1-6r]|ul|ol|li|blockquote|d[dlt]|pre|t[dhr]|t(?:able|body|foot|head)|c(?:aption|olgroup)|form|s(?:elect|tyle)|a(?:ddress|rea)|ma(?:p|th))';
// Put at least two linebreaks before and after $no_p elements
$str = preg_replace('~^<' . $no_p . '[^>]*+>~im', "\n$0", $str);
$str = preg_replace('~</' . $no_p . '\s*+>$~im', "$0\n", $str);
}
// Do the <p> magic!
$str = '<p>' . trim($str) . '</p>';
$str = preg_replace('~\n{2,}~', "</p>\n\n<p>", $str);
// The following regexes only need to be executed if the string contains html
if ($html_found !== false) {
// Remove p tags around $no_p elements
$str = preg_replace('~<p>(?=</?' . $no_p . '[^>]*+>)~i', '', $str);
$str = preg_replace('~(</?' . $no_p . '[^>]*+>)</p>~i', '$1', $str);
}
// Convert single linebreaks to <br />
if ($br === true) {
$str = preg_replace('~(?<!\n)\n(?!\n)~', "<br />\n", $str);
}
return $str;
}Returns human readable sizes. Based on original functions written by Aidan Lister and Quentin Zervaas.
echo Text::bytes(filesize($file));
integer
$bytes
required - Size in bytes string
$force_unit
= NULL - A definitive unit string
$format
= NULL - The return string format boolean
$si
= bool TRUE - Whether to use SI prefixes or IEC stringpublic static function bytes($bytes, $force_unit = null, $format = null, $si = true)
{
// Format string
$format = ($format === null) ? '%01.2f %s' : (string) $format;
// IEC prefixes (binary)
if ($si == false OR strpos($force_unit, 'i') !== false) {
$units = ['B', 'KiB', 'MiB', 'GiB', 'TiB', 'PiB'];
$mod = 1024;
}
// SI prefixes (decimal)
else {
$units = ['B', 'kB', 'MB', 'GB', 'TB', 'PB'];
$mod = 1000;
}
// Determine unit to use
if (($power = array_search((string) $force_unit, $units)) === false) {
$power = ($bytes > 0) ? floor(log($bytes, $mod)) : 0;
}
return sprintf($format, $bytes / pow($mod, $power), $units[$power]);
}Replaces the given words with a string.
// Displays "What the #####, man!"
echo Text::censor('What the frick, man!', [
'frick' => '#####',
]);
string
$str
required - Phrase to replace words in array
$badwords
required - Words to replace string
$replacement
= string(1) "#" - Replacement string boolean
$replace_partial_words
= bool TRUE - Replace words across word boundaries (space, period, etc) stringpublic static function censor($str, $badwords, $replacement = '#', $replace_partial_words = true)
{
foreach ((array) $badwords as $key => $badword) {
$badwords[$key] = str_replace('\*', '\S*?', preg_quote((string) $badword));
}
$regex = '(' . implode('|', $badwords) . ')';
if ($replace_partial_words === false) {
// Just using \b isn't sufficient when we need to replace a badword that already contains word boundaries itself
$regex = '(?<=\b|\s|^)' . $regex . '(?=\b|\s|$)';
}
$regex = '!' . $regex . '!ui';
// if $replacement is a single character: replace each of the characters of the badword with $replacement
if (UTF8::strlen($replacement) == 1) {
return preg_replace_callback($regex, function($matches) use ($replacement) {
return str_repeat($replacement, UTF8::strlen($matches[1]));
}, $str);
}
// if $replacement is not a single character, fully replace the badword with $replacement
return preg_replace($regex, $replacement, $str);
}Limits a phrase to a given number of characters.
$text = Text::limit_chars($text);
string
$str
required - Phrase to limit characters of integer
$limit
= integer 100 - Number of characters to limit to string
$end_char
= NULL - End character or entity boolean
$preserve_words
= bool FALSE - Enable or disable the preservation of words while limiting stringpublic static function limit_chars($str, $limit = 100, $end_char = null, $preserve_words = false)
{
$end_char = ($end_char === null) ? '…' : $end_char;
$limit = (int) $limit;
if (trim($str) === '' OR UTF8::strlen($str) <= $limit)
return $str;
if ($limit <= 0)
return $end_char;
if ($preserve_words === false)
return rtrim(UTF8::substr($str, 0, $limit)) . $end_char;
// Don't preserve words. The limit is considered the top limit.
// No strings with a length longer than $limit should be returned.
if (!preg_match('/^.{0,' . $limit . '}\s/us', $str, $matches))
return $end_char;
return rtrim($matches[0]) . ((strlen($matches[0]) === strlen($str)) ? '' : $end_char);
}Limits a phrase to a given number of words.
$text = Text::limit_words($text);
string
$str
required - Phrase to limit words of integer
$limit
= integer 100 - Number of words to limit to string
$end_char
= NULL - End character or entity stringpublic static function limit_words($str, $limit = 100, $end_char = null)
{
$limit = (int) $limit;
$end_char = ($end_char === null) ? '…' : $end_char;
if (trim($str) === '')
return $str;
if ($limit <= 0)
return $end_char;
preg_match('/^\s*+(?:\S++\s*+){1,' . $limit . '}/u', $str, $matches);
// Only attach the end character if the matched string is shorter
// than the starting string.
return rtrim($matches[0]) . ((strlen($matches[0]) === strlen($str)) ? '' : $end_char);
}Format a number to human-readable text.
// Display: one thousand and twenty-four
echo Text::number(1024);
// Display: five million, six hundred and thirty-two
echo Text::number(5000632);
integer
$number
required - Number to format stringpublic static function number($number)
{
// The number must always be an integer
$number = (int) $number;
// Uncompiled text version
$text = [];
// Last matched unit within the loop
$last_unit = null;
// The last matched item within the loop
$last_item = '';
foreach (Text::$units as $unit => $name) {
if ($number / $unit >= 1) {
// $value = the number of times the number is divisible by unit
$number -= $unit * ($value = (int) floor($number / $unit));
// Temporary var for textifying the current unit
$item = '';
if ($unit < 100) {
if ($last_unit < 100 AND $last_unit >= 20) {
$last_item .= '-' . $name;
} else {
$item = $name;
}
} else {
$item = Text::number($value) . ' ' . $name;
}
// In the situation that we need to make a composite number (i.e. twenty-three)
// then we need to modify the previous entry
if (empty($item)) {
array_pop($text);
$item = $last_item;
}
$last_item = $text[] = $item;
$last_unit = $unit;
}
}
if (count($text) > 1) {
$and = array_pop($text);
}
$text = implode(', ', $text);
if (isset($and)) {
$text .= ' and ' . $and;
}
return $text;
}Generates a random string of a given type and length.
$str = Text::random(); // 8 character random string
The following types are supported:
You can also create a custom type by providing the "pool" of characters as the type.
string
$type
= NULL - A type of pool, or a string of characters to use as the pool integer
$length
= integer 8 - Length of string to return stringpublic static function random($type = null, $length = 8)
{
if ($type === null) {
// Default is to generate an alphanumeric string
$type = 'alnum';
}
$utf8 = false;
switch ($type) {
case 'alnum':
$pool = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
break;
case 'alpha':
$pool = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
break;
case 'hexdec':
$pool = '0123456789abcdef';
break;
case 'numeric':
$pool = '0123456789';
break;
case 'nozero':
$pool = '123456789';
break;
case 'distinct':
$pool = '2345679ACDEFHJKLMNPRSTUVWXYZ';
break;
default:
$pool = (string) $type;
$utf8 = !UTF8::is_ascii($pool);
break;
}
// Split the pool into an array of characters
$pool = ($utf8 === true) ? UTF8::str_split($pool, 1) : str_split($pool, 1);
// Largest pool key
$max = count($pool) - 1;
$str = '';
for ($i = 0; $i < $length; $i++) {
// Select a random character from the pool and add it to the string
$str .= $pool[mt_rand(0, $max)];
}
// Make sure alnum strings contain at least one letter and one digit
if ($type === 'alnum' AND $length > 1) {
if (ctype_alpha($str)) {
// Add a random digit
$str[mt_rand(0, $length - 1)] = chr(mt_rand(48, 57));
} elseif (ctype_digit($str)) {
// Add a random letter
$str[mt_rand(0, $length - 1)] = chr(mt_rand(65, 90));
}
}
return $str;
}Reduces multiple slashes in a string to single slashes.
$str = Text::reduce_slashes('foo//bar/baz'); // "foo/bar/baz"
string
$str
required - String to reduce slashes of stringpublic static function reduce_slashes($str)
{
return preg_replace('#(?<!:)//+#', '/', $str);
}Finds the text that is similar between a set of words.
$match = Text::similar(['fred', 'fran', 'free']); // "fr"
array
$words
required - Words to find similar text of stringpublic static function similar(array $words)
{
// First word is the word to match against
$word = current($words);
for ($i = 0, $max = strlen($word); $i < $max; ++$i) {
foreach ($words as $w) {
// Once a difference is found, break out of the loops
if (!isset($w[$i]) OR $w[$i] !== $word[$i])
break 2;
}
}
// Return the similar text
return substr($word, 0, $i);
}Uppercase words that are not separated by spaces, using a custom delimiter or the default.
$str = Text::ucfirst('content-type'); // returns "Content-Type"
string
$string
required - String to transform string
$delimiter
= string(1) "-" - Delimiter to use stringpublic static function ucfirst($string, $delimiter = '-')
{
// Put the keys back the Case-Convention expected
return implode($delimiter, array_map('UTF8::ucfirst', explode($delimiter, $string)));
}Returns information about the client user agent.
// Returns "Chrome" when using Google Chrome
$browser = Text::user_agent($agent, 'browser');
Multiple values can be returned at once by using an array:
// Get the browser and platform with a single call
$info = Text::user_agent($agent, ['browser', 'platform']);
When using an array for the value, an associative array will be returned.
string
$agent
required - User_agent mixed
$value
required - Array or string to return: browser, version, robot, mobile, platform mixed - Requested information, false if nothing is foundpublic static function user_agent($agent, $value)
{
if (is_array($value)) {
$data = [];
foreach ($value as $part) {
// Add each part to the set
$data[$part] = Text::user_agent($agent, $part);
}
return $data;
}
if ($value === 'browser' OR $value == 'version') {
// Extra data will be captured
$info = [];
// Load browsers
$browsers = Kohana::$config->load('user_agents')->browser;
foreach ($browsers as $search => $name) {
if (stripos($agent, $search) !== false) {
// Set the browser name
$info['browser'] = $name;
if (preg_match('#' . preg_quote($search) . '[^0-9.]*+([0-9.][0-9.a-z]*)#i', $agent, $matches)) {
// Set the version number
$info['version'] = $matches[1];
} else {
// No version number found
$info['version'] = false;
}
return $info[$value];
}
}
} else {
// Load the search group for this type
$group = Kohana::$config->load('user_agents')->$value;
foreach ($group as $search => $name) {
if (stripos($agent, $search) !== false) {
// Set the value name
return $name;
}
}
}
// The value requested could not be found
return false;
}Prevents widow words by inserting a non-breaking space between the last two words.
echo Text::widont($text);
regex courtesy of the Typogrify project
string
$str
required - Text to remove widows from stringpublic static function widont($str)
{
// use '%' as delimiter and 'x' as modifier
$widont_regex = "%
(?:</?(?:a|em|span|strong|i|b)[^>]*>)|[^<>\s]) # must be proceeded by an approved inline opening or closing tag or a nontag/nonspace
s+ # the space to replace
[^<>\s]+ # must be flollowed by non-tag non-space characters
s* # optional white space!
</(a|em|span|strong|i|b)>\s*)* # optional closing inline tags with optional white space after each
(</(p|h[1-6]|li|dt|dd)>)|$)) # end with a closing p, h1-6, li or the end of the string
";
return preg_replace($widont_regex, '$1 $2', $str);
}protected static function _auto_link_emails_callback($matches)
{
return HTML::mailto($matches[0]);
}protected static function _auto_link_urls_callback1($matches)
{
return HTML::anchor($matches[0]);
}protected static function _auto_link_urls_callback2($matches)
{
return HTML::anchor('http://' . $matches[0], $matches[0]);
}