How to minify php page html output

Question

I am looking for a php script or class that can minify my php page html output like google page speed does   How can I do this

User · Answer

You can use a well tested Java minifier like HTMLCompressor by invoking it using passthru (exec).
Remember to redirect console using 2>&1

This however may not be useful, if speed is a concern. I use it for static php output

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Create a PHP file outside your document root  If your document root is   var www html        create the a file named minify php one level above it    var www minify php       Copy paste the following PHP code into it   lt  php function minify output  buffer        search   array     gt    S    s       S     lt  s      s   s         replace   array   gt     lt      1        if  preg match     lt html i   buffer     1  amp  amp  preg match     lt   html  gt  i   buffer     1             buffer   preg replace  search   replace   buffer             return  buffer    ob start  minify output     gt        Save the minify php file and open the php ini file  If it is a dedicated server VPS search for the following option  on shared hosting with custom php ini add it   auto prepend file    var www minify php    Reference  http   websistent com how-to-use-php-to-minify-html-output

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Turn on gzip if you want to do it properly  You can also just do something like this    this- gt output   preg replace      array              2                 lt  --   -- gt   t     r  n   t     s             array                                      this- gt output      This removes about 30  of the page size by turning your html into one line  no tabs  no new lines  no comments  Mileage may vary

User · Answer

If you want to remove all new lines in the page  use this fast code   ob start function  b   if strpos  b    lt html     false    return str replace PHP EOL     b     else  return  b

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All of the preg replace   solutions above have issues of single line comments  conditional comments and other pitfalls   I d recommend taking advantage of the well-tested Minify project rather than creating your own regex from scratch   In my case I place the following code at the top of a PHP page to minify it   function sanitize output  buffer        require once  min lib Minify HTML php        require once  min lib Minify CSS php        require once  min lib JSMin php         buffer   Minify HTML  minify  buffer  array           cssMinifier    gt  array  Minify CSS    minify             jsMinifier    gt  array  JSMin    minify               return  buffer    ob start  sanitize output

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First of all gzip can help you more than a Html Minifier   With nginx    gzip on  gzip disable  msie6    gzip vary on  gzip proxied any  gzip comp level 6  gzip buffers 16 8k  gzip http version 1 1  gzip types text plain text css application json application x-javascript text xml application xml application xml rss text javascript   With apache you can use mod gzip      Second  with gzip   Html Minification you can reduce the file size drastically     I ve created this HtmlMinifier for PHP   You can retrieve it through composer  composer require arjanschouten htmlminifier dev-master   There is a Laravel service provider  If you re not using Laravel you can use it from PHP      create a minify context which will be used through the minification process  context   new MinifyContext new PlaceholderContainer        save the html contents in the context  context- gt setContents   lt html gt My html    lt  html gt      minify   new Minify       start the process and give the context with it as parameter  context    minify- gt run  context        context now contains the minified version  minifiedContents    context- gt getContents      As you can see you can extend a lot of things in here and you can pass various options  Check the readme to see all the available options   This HtmlMinifier is complete and safe  It takes 3 steps for the minification process    Replace critical content temporary with a placeholder  Run the minification strategies  Restore the original content    I would suggest that you cache the output of you re views  The minification process should be a one time process  Or do it for example interval based   Clear benchmarks are not created at the time  However the minifier can reduce the page size with 5-25  based on the your markup   If you want to add you re own strategies you can use the addPlaceholder and the addMinifier methods

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CSS and Javascript Consider the following link to minify Javascript CSS files  https   github com mrclay minify HTML Tell Apache to deliver HTML with GZip - this generally reduces the response size by about 70    If you use Apache  the module configuring gzip depends on your version  Apache 1 3 uses mod gzip while Apache 2 x uses mod deflate    Accept-Encoding  gzip  deflate Content-Encoding  gzip  Use the following snippet to remove white-spaces from the HTML with the help ob start s buffer   lt  php  function sanitize output  buffer          search   array              gt    S    s          strip whitespaces after tags  except space              S     lt  s          strip whitespaces before tags  except space             s   s              shorten multiple whitespace sequences            lt  --    s   -- gt       Remove HTML comments              replace   array            gt              lt               1                           buffer   preg replace  search   replace   buffer        return  buffer     ob start  quot sanitize output quot       gt

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I have a GitHub gist contains PHP functions to minify HTML  CSS and JS files  rarr  https   gist github com taufik-nurrohman d7b310dea3b33e4732c0  Here rsquo s how to minify the HTML output on the fly with output buffer    lt  php  include  path to php-html-css-js-minifier php    ob start  minify html       gt    lt  -- HTML code goes here     -- gt    lt  php echo ob get clean      gt

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Thanks to Andrew  Here s what a did to use this in cakePHP    Download minify-2 1 7 Unpack the file and copy min subfolder to cake s Vendor folder Creates MinifyCodeHelper php in cake s View Helper like this   App  import  Vendor min lib Minify     HTML    App  import  Vendor min lib Minify     CommentPreserver    App  import  Vendor min lib Minify CSS     Compressor    App  import  Vendor min lib Minify     CSS    App  import  Vendor min lib     JSMin    class MinifyCodeHelper extends Helper       public function afterRenderFile  file   data            if  Configure  read  debug    lt  1     works only e production mode              data   Minify HTML  minify  data  array                   cssMinifier    gt  array  Minify CSS    minify                     jsMinifier    gt  array  JSMin    minify                           return  data           Enabled my Helper in AppController   public  helpers   array   Html         MinifyCode      5    Voila   My conclusion  If apache s deflate and headers modules is disabled in your server your gain is 21  less size and 0 35s plus in request to compress  this numbers was in my case     But if you had enable apache s modules the compressed response has no significant difference  1 3  to me  and the time to compress is the samne  0 3s to me     So    why did I do that   couse my project s doc is all in comments  php  css and js  and my final user dont need to see this

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This work for me   function Minify Html  Html        Search   array          n     x20   t             n              n              n            lt   --   -- gt             x20   t       Delete multispace  Without  n          gt  s   lt       strip whitespaces between tags               s   gt       strip whitespaces between quotation      and end tags         s               strip whitespaces between           Replace   array        n         n                                   gt  lt          1 gt           1      Html   preg replace  Search  Replace  Html   return  Html

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I ve tried several minifiers and they either remove too little or too much   This code removes redundant empty spaces and optional HTML  ending  tags  Also it plays it safe and does not remove anything that could potentially break HTML  JS or CSS   Also the code shows how to do that in Zend Framework   class Application Plugin Minify extends Zend Controller Plugin Abstract      public function dispatchLoopShutdown          response    this- gt getResponse         body    response- gt getBody      actually returns both HEAD and BODY        remove redundant  white-space  characters      replace   array            remove tabs before and after HTML tags             gt    S    s      gt    gt                 S     lt  s      gt    lt              shorten multiple whitespace sequences  keep new-line characters because they matter in JS                 t     s     gt                 remove leading and trailing spaces               t     m    gt                   t      m    gt                 remove JS line comments  simple only   do NOT remove lines containing URL  e g   src  http   server com                     a-zA-Z0-9     m    gt                remove empty lines  sequence of line-end and white-space characters              r n     t     r n     s     gt    n             remove empty lines  between HTML tags   cannot remove just any line-end characters because in inline JS they can matter              gt   r n t     lt  s       gt    gt  lt              remove  empty  lines containing only JS s block end character  join with next line  e g     n  n lt  script gt   -- gt      lt  script gt                r n t    s     gt                    r n t      r n t    s     gt                  remove new-line after JS s function or condition start  join with next line               r n t      r n t    s     gt                     r n t      r n t    s     gt                  remove new-line after JS s line end  only most obvious and safe cases                 r n t    s     gt                  remove quotes from HTML attributes that does not contain spaces  keep quotes around URLs               r n t      a-zA-Z0-9       a-zA-Z0-9    -       r n t     s    gt    1 2  3 4      1 and  4 insert first white-space character found before after attribute             body   preg replace array keys  replace   array values  replace    body          remove optional ending tags  see http   www w3 org TR html5 syntax html syntax-tag-omission        remove   array            lt  option gt      lt  li gt      lt  dt gt      lt  dd gt      lt  tr gt      lt  th gt      lt  td gt               body   str ireplace  remove       body         response- gt setBody  body           But note that when using gZip compression your code gets compressed a lot more that any minification can do so combining minification and gZip is pointless  because time saved by downloading is lost by minification and also saves minimum   Here are my results  download via 3G network     Original HTML         150kB       180ms download  gZipped HTML           24kB        40ms  minified HTML         120kB       150ms download   150ms minification  min gzip HTML          22kB        30ms download   150ms minification

User · Answer

you can check out this set of classes   https   code google com p minify source browse  name master git 2Fmin 2Flib 2FMinify   you ll find html css js minification classes there   you can also try this  http   code google com p htmlcompressor   Good luck

User · Answer

You can look into HTML TIDY - http   uk php net tidy  It can be installed as a PHP module and will  correctly  safely  strip whitespace and all other nastiness  whilst still outputting perfectly valid HTML   XHTML markup  It will also clean your code  which can be a great thing or a terrible thing  depending on how good you are at writing valid code in the first place  -   Additionally  you can gzip the output using the following code at the start of your file   ob start  ob gzhandler

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