native php function to highlight javascript? - php

Question

Is there any native PHP function as highlight_string(); but for javascript ?
Or, if not, is there any PHP function (homemade) to do it?
EDIT: I want to use PHP function to COLORIZE javascript

Answer 1

I have had great success with GeSHi. Easy to use and integrate in your app and it supports a lot of languages.

Answer 2

I understand you want a Syntax Highligher written in PHP. This one (Geshi) has worked for me in the past:
http://qbnz.com/highlighter/

Answer 3

Yes, the PHP function highlight_string() is a native PHP function for PHP.

Answer 4

No.
But there are a lot of javascript libraries that do syntax-highlight on several languages,
from bash-scripting to php and javascript.
eg, like snippet (JQuery) or jQuery.Syntax (my favorite)

Answer 5

Over here you can find an excellent library which enables syntax highlighting in a large amount of languages using javascripts and a css class.
There is no native php function to do this, so either you have to use existing libraries or you have to write something yourself.

Answer 6

Fastest way - you can use also PHP function "highlight_string" with a little trick
(capture function output and remove leading/trailing PHP tags):
$source = '... some javascript ...';
// option 1 - pure JS code
$htmlJs = highlight_string('<?php '.$source.' ?>', true);
$htmlJs = str_replace(array('<?php ', ' ?>'), array('', ''), $htmlJs);
// option 2 - when mixing up with PHP code inside of JS script
$htmlJs = highlight_string('START<?php '.$source.' ?>END', true);
$htmlJs = str_replace(array('START<span style="color: #0000BB"><?php </span>', ' ?>END'), array('', ''), $htmlJs);
// check PHP INI setting for "highlight.keyword" (#0000BB) - http://www.php.net/manual/en/misc.configuration.php#ini.syntax-highlighting

Answer 7

No native function, but rather than using a full stack library just to highlight some javascript you can use this single function :
function format_javascript($data, $options = false, $c_string = "#DD0000", $c_comment = "#FF8000", $c_keyword = "#007700", $c_default = "#0000BB", $c_html = "#0000BB", $flush_on_closing_brace = false)
{
if (is_array($options)) { // check for alternative usage
extract($options, EXTR_OVERWRITE); // extract the variables from the array if so
} else {
$advanced_optimizations = $options; // otherwise carry on as normal
}
#ini_set('highlight.string', $c_string); // Set each colour for each part of the syntax
#ini_set('highlight.comment', $c_comment); // Suppression has to happen as some hosts deny access to ini_set and there is no way of detecting this
#ini_set('highlight.keyword', $c_keyword);
#ini_set('highlight.default', $c_default);
#ini_set('highlight.html', $c_html);
if ($advanced_optimizations) { // if the function has been allowed to perform potential (although unlikely) code-destroying or erroneous edits
$data = preg_replace('/([$a-zA-z09]+) = \((.+)\) \? ([^]*)([ ]+)?\:([ ]+)?([^=\;]*)/', 'if ($2) {' . "\n" . ' $1 = $3; }' . "\n" . 'else {' . "\n" . ' $1 = $5; ' . "\n" . '}', $data); // expand all BASIC ternary statements into full if/elses
}
$data = str_replace(array(') { ', ' }', ";", "\r\n"), array(") {\n", "\n}", ";\n", "\n"), $data); // Newlinefy all braces and change Windows linebreaks to Linux (much nicer!)
$data = preg_replace("/(^[\r\n]*|[\r\n]+)[\s\t]*[\r\n]+/", "\n", $data); // Regex identifies all extra empty lines produced by the str_replace above. It is quicker to do it like this than deal with a more complicated regular expression above.
$data = str_replace("<?php", "<script>", highlight_string("<?php \n" . $data . "\n?>", true));
$data = explode("\n", str_replace(array("<br />"), array("\n"), $data));
# experimental tab level highlighting
$tab = 0;
$output = '';
foreach ($data as $line) {
$lineecho = $line;
if (substr_count($line, "\t") != $tab) {
$lineecho = str_replace("\t", "", trim($lineecho));
$lineecho = str_repeat("\t", $tab) . $lineecho;
}
$tab = $tab + substr_count($line, "{") - substr_count($line, "}");
if ($flush_on_closing_brace && trim($line) == "}") {
$output .= '}';
} else {
$output .= str_replace(array("{}", "[]"), array("<span style='color:" . $c_string . "!important;'>{}</span>", "<span style='color:" . $c_string . " !important;'>[]</span>"), $lineecho . "\n"); // Main JS specific thing that is not matched in the PHP parser
}
}
$output = str_replace(array('?php', '?>'), array('script type="text/javascript">', '</script>'), $output); // Add nice and friendly <script> tags around highlighted text
return '<pre id="code_highlighted">' . $output . "</pre>";
}
Usage :
echo format_javascript('console.log("Here is some highlighted JS code using a single function !");') ;
Credit :
http://css-tricks.com/highlight-code-with-php/
Demo :
http://css-tricks.com/examples/HighlightJavaScript/

Answer 8

Well nice info here . Here is another nice one : http://code.google.com/p/google-code-prettify/