Compress PHP code for multiple CSS and JS files

Header (' content-type:text/css '); Ob_start ("compress"); function Compress ($buffer) { /* Remove Comments */ $buffer = Preg_replace ('!/\*[^*]*\*+ ([^/][^*]*\*+) */! ', ' ', $buffer); /* Remove tabs, spaces, newlines, etc. */ $buffer = Str_replace ("r \ n", "\ r", "\ n", "\ T", "', '", "),", $buffer); return $buffer; } /* Your CSS files */ Include (' galleria.css '); Include (' articles.css '); Ob_end_flush (); ?> Copy Code Instantiation: test.php Test Copy Code 2. Compressing JS using Jsmin class Source: http://code.google.com/p/minify/compress.php Header (' Content-type:text/javascript '); Require ' jsmin.php '; Echo jsmin::minify (file_get_contents (' Common.js '). file_get_contents (' common2.js ')); ?> Copy Code Common.jsalert (' first JS '); Common.jsalert (' second JS '); jsmin.php /** * jsmin.php-extended PHP implementation of Douglas Crockford ' s jsmin. * * * $minifiedJs = JSMin::minify($js); * * * This was a direct port of JSMIN.C to PHP with a few PHP performance tweaks and * Modifications to preserve some comments (see below). Also, rather than using * Stdin/stdout, Jsmin::minify () accepts a string as input and returns another * String as output. * * Comments containing IE conditional compilation is preserved, as is multi-line * Comments that begin with "/*!" (For documentation purposes). In the latter case * Newlines is inserted around the comment to enhance readability. * * PHP 5 or higher is required. * * Permission is hereby granted to use this version of the library under the * Same terms as JSMIN.C, which has the following license: * * -- * Copyright (c) 2002 Douglas Crockford (www.crockford.com) * * Permission is hereby granted, free of charge, to all person obtaining a copy of * This software and associated documentation files (the "Software"), to deal in * The software without restriction, including without limitation the rights to * Use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies * of the software, and to permit persons to whom the software are furnished to do * So, subject to the following conditions: * * The above copyright notice and this permission notice shall is included in all * Copies or substantial portions of the software. * * The software shall is used for good, not Evil. * * The software is provided ' as is ', without WARRANTY of any KIND, EXPRESS OR * implied, including but not LIMITED to the warranties of merchantability, * FITNESS for A particular PURPOSE and noninfringement. In NO EVENT shall the * AUTHORS or COPYRIGHT holders be liable for any CLAIM, damages or other * Liability, WHETHER in a ACTION of contract, TORT OR OTHERWISE, arising from, * Out of OR in CONNECTION with the software or the use or other dealings in the * Software. * -- * * @package Jsmin * @author Ryan Grove (PHP port) * @author Steve Clay (modifications + cleanup) * @author Andrea Giammarchi (spacebeforeregexp) * @copyright 2002 Douglas Crockford (JSMIN.C) * @copyright Ryan Grove (PHP port) * @license http://opensource.org/licenses/mit-license.php mit License * @link http://code.google.com/p/jsmin-php/ */ Class Jsmin { Const ORD_LF = 10; Const ORD_SPACE = 32; Const ACTION_KEEP_A = 1; Const ACTION_DELETE_A = 2; Const ACTION_DELETE_A_B = 3; protected $a = "\ n"; protected $b = "; protected $input = "; protected $inputIndex = 0; protected $inputLength = 0; protected $lookAhead = null; protected $output = "; /** * Minify Javascript * * @param string $js Javascript to be minified * @return String */ public static function Minify ($JS) { Look out for syntax like "+ + +" and "-+ +" $p = ' \\+ '; $m = ' \\-'; if (Preg_match ("/([$p $m]) (?: \ \1 [$p $m]| (?: $p $p| $m $m)) /", $js)) { Likely pre-minified and would be broken by jsmin return $JS; } $jsmin = new Jsmin ($JS); return $jsmin->min (); } /* * Don ' t create a jsmin instance, instead use the static function Minify, * Which checks for mb_string function overloading and avoids errors * Trying to re-minify the output of Closure Compiler * * @private */ Public function __construct ($input) { $this->input = $input; } /** * Perform minification, return result */ Public Function min () { if ($this->output!== ") {//min already run return $this->output; } $MBINTENC = null; if (function_exists (' Mb_strlen ') && ((int) ini_get (' Mbstring.func_overload ') & 2)) { $MBINTENC = Mb_internal_encoding (); Mb_internal_encoding (' 8bit '); } $this->input = Str_replace ("\ r \ n", "\ n", $this->input); $this->inputlength = strlen ($this->input); $this->action (Self::action_delete_a_b); while ($this->a!== null) { Determine next command $command = self::action_keep_a; Default if ($this->a = = = ") { if (! $this->isalphanum ($this->b)) { $command = self::action_delete_a; } } elseif ($this->a = = = = "\ n") { if ($this->b = = = ") { $command = Self::action_delete_a_b; In case of Mbstring.func_overload & 2, must check for null B, Otherwise mb_strpos'll give WARNING } elseif ($this->b = = = NULL || (false = = = Strpos (' {[+ ', $this->b) &&! $this->isalphanum ($this->b))) { $command = self::action_delete_a; } } elseif (! $this->isalphanum ($this->a)) { if ($this->b = = = " || ($this->b = = = "\ n" && (false = = = Strpos ('}]) +-"\", $this->a))) { $command = Self::action_delete_a_b; } } $this->action ($command); } $this->output = Trim ($this->output); if ($MBINTENC!== null) { Mb_internal_encoding ($MBINTENC); } return $this->output; } /** * action_keep_a = Output A. Copy b to A. Get the next B. * Action_delete_a = Copy b to A. Get the next B. * Action_delete_a_b = Get the next B. */ protected function Action ($command) { Switch ($command) { Case SELF::ACTION_KEEP_A: $this->output. = $this->a; Fallthrough Case SELF::ACTION_DELETE_A: $this->a = $this->b; if ($this->a = = = "'" | | $this->a = = = ' "') {//string literal $str = $this->a; In case needed for exception while (true) { $this->output. = $this->a; $this->a = $this->get (); if ($this->a = = = $this->b) {//End Quote Break } if (Ord ($this->a) <= self::ord_lf) { throw New Jsmin_unterminatedstringexception ( "Jsmin:unterminated String at Byte" . $this->inputindex. ": {$str}"); } $str. = $this->a; if ($this->a = = = ' \ \ ') { $this->output. = $this->a; $this->a = $this->get (); $str. = $this->a; } } } Fallthrough Case Self::action_delete_a_b: $this->b = $this->next (); if ($this->b = = = '/' && $this->isregexpliteral ()) {//REGEXP literal $this->output. = $this->a. $this->b; $pattern = '/'; In case needed for exception while (true) { $this->a = $this->get (); $pattern. = $this->a; if ($this->a = = = = '/') {//End pattern Break while (true) } elseif ($this->a = = = ' \ \ ') { $this->output. = $this->a; $this->a = $this->get (); $pattern. = $this->a; } elseif (Ord ($this->a) <= self::ord_lf) { throw New Jsmin_unterminatedregexpexception ( "Jsmin:unterminated RegExp at Byte" . $this->inputindex. ": {$pattern}"); } $this->output. = $this->a; } $this->b = $this->next (); } End Case Action_delete_a_b } } protected function isregexpliteral () { if (False!== Strpos ("\n{;(, =:[!&|?", $this->a)) {//we aren ' t dividing return true; } if (' = = = $this->a) { $length = strlen ($this->output); if ($length < 2) {//weird edge case return true; } You can ' t divide a keyword if (Preg_match ('/(?: case|else|in|return|typeof) $/', $this->output, $m)) { if ($this->output = = = $m [0]) {//odd but could happen return true; } Make sure it's a keyword, not end of a identifier $charBeforeKeyword = substr ($this->output, $length-strlen ($m [0])-1, 1); if (! $this->isalphanum ($charBeforeKeyword)) { return true; } } } return false; } /** * Get next char. Convert Ctrl char to space. */ protected function Get () { $c = $this->lookahead; $this->lookahead = null; if ($c = = = null) { if ($this->inputindex < $this->inputlength) { $c = $this->input[$this->inputindex]; $this->inputindex + = 1; } else { return null; } } if ($c = = = "\ r" | | $c = = = "\ n") { return "\ n"; } if (Ord ($c) < Self::ord_space) {//control Char Return '; } return $c; } /** * Get next char. If is the CTRL character, translate to a space or newline. */ protected function Peek () { $this->lookahead = $this->get (); return $this->lookahead; } /** * is $c a letter, digit, underscore, dollar sign, escape, or Non-ascii? */ protected function Isalphanum ($c) { Return (Preg_match ('/^[0-9a-za-z_\\$\\\\]$/', $c) | | ord ($c) > 126); } protected function singlelinecomment () { $comment = "; while (true) { $get = $this->get (); $comment. = $get; if (Ord ($get) <= self::ord_lf) {//EOL reached If IE conditional comment if (Preg_match ('/^\\/@ (?: cc_on|if|elif|else|end) \\b/', $comment)) { Return "/{$comment}"; } return $get; } } } protected function multiplelinecomment () { $this->get (); $comment = "; while (true) { $get = $this->get (); if ($get = = = ' * ') { if ($this->peek () = = = '/') {//end of comment reached $this->get (); If comment preserved by YUI Compressor if (0 = = Strpos ($comment, '! ')) { Return "\n/*". SUBSTR ($comment, 1). "*/\n"; } If IE conditional comment if (Preg_match ('/^@ (?: cc_on|if|elif|else|end) \\b/', $comment)) { Return "/*{$comment}*/"; } Return '; } } elseif ($get = = = null) { throw New Jsmin_unterminatedcommentexception ( "Jsmin:unterminated Comment at byte" . $this->inputindex. ":/*{$comment}"); } $comment. = $get; } } /** * Get the next character, skipping over comments. * Some comments may preserved. */ protected function Next () { $get = $this->get (); if ($get!== '/') { return $get; } Switch ($this->peek ()) { Case '/': Return $this->singlelinecomment (); Case ' * ': Return $this->multiplelinecomment (); Default:return $get; } } } Class Jsmin_unterminatedstringexception extends Exception {} Class Jsmin_unterminatedcommentexception extends Exception {} Class Jsmin_unterminatedregexpexception extends Exception {} ?> Copy Code Invocation Example: Copy Code

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