Archiv der Kategorie ‘php‘

 
 

PHP File Loads Itself

This is weird idea I had right before I went to sleep last night. I might actually use it for something… have a look:

loadme.php:

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<?php
  $file = file_get_contents("loadme.php");
 
  $file = preg_split("/\?\>\n/", $file);
  $file = preg_replace("/^/m", "z",$file[1]);
 
  echo $file;
 
  die();
?>
one
two
three
four
 
'; ?>

The above just adds a z in front of each new line. So it outputs:

zone ztwo zthree zfour

It could be used for preprocessing a document. Something like:

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<?php require_once("processor.php"); ?>;
 
html
  head
    meta charset="utf-8"
    title (test site)
 
  body
     #nav
       .btn(one) .btn(two) .btn(three)
 
     #left (left side)
 
     #center
        .entry
          h1(Hello This is an entry)
          (this is some text)
        .entry
          h1(Another Entry)
          (more text)
 
     #right (right side)
 
     #footer (Vorbin Saucer 2012)

The php would then turn the above markup into regular html. Kind of interesting…

20. May 2011 | misc, php, snippets, Uncategorized | Comments (1)

MediaWiki Api

Here is an example of how to start using the MediaWiki Api. For demo purposes I’m getting data from Wikipedia:

First we need some php for the http request. You need to send a user agent value that contains contact information, otherwise MediaWiki will not let you access any data:

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<?php
 
  $defaults = array(
    "term" => "water", 
    "limit" => "10"  
  );
 
  foreach($defaults as $key => $value){
    if (isset($_REQUEST[$key])){
     $defaults[$key] =  urlencode($_REQUEST[$key]);
    }
  }
 
  ini_set("user_agent", "Demo for http://zreference.com/");
 
  echo file_get_contents("http://en.wikipedia.org/w/api.php?action=query&list=search&srsearch={$defaults['term']}&srlimit={$defaults['limit']}&format=xml");

Then we can use a little jQuery to load and display the data:

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<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8" />
    <title>MediaWiki Api</title>
    <script src="http://code.jquery.com/jquery-1.5.1.min.js"></script>
    <script>
 
      $(function(){
 
        var body = $("body");
 
        var vars = {
          term : "strange attractor",
          limit : 10,
        }
 
        $.post("wiki.php", vars, function(data){
          var parsed = $.parseXML(data);
          var results = $(parsed);
 
          results.find("p").each(function(){
            var curr = $(this);
            var title = curr.attr("title");
            var link = "http://en.wikipedia.com/wiki/" + title;
            var content = "<h1>" + title +"<\/h1>";
            content += curr.attr("snippet");
            $("<div/>", {
              html : content,
              className : "result"
            }).appendTo(body)
              .wrap("<a href='"+link+"' target='_blank'/>");
          });
 
        });
 
      });
    </script>
    <style>
      a{
        text-decoration : none;
        color : black; 
        -webkit-transition : color 0.5s;
      }
      a:hover{
        color : red; 
      }
      .result{
        position : relative;
        font-family : sans-serif; 
        margin-bottom : 10px;
      }
      .result h1{
        font-size : 20px; 
      }
    </style>
    <body>
    </body>
  </head>
</html>

Rather than using jQuery.animate() I decided to use a css webkit transition for the rollover – just for demo purposes.

There’s lots of documentation for this api – there is a nice summary if you visit api.php:

http://en.wikipedia.org/w/api.php

The final result will look like this.

02. May 2011 | html, javascript, jquery, php | Comments (0)

Recent Snippets Part 1

Here are a few snippets that I’ve used recently. They are javascript, mysql, php and some apache directives:

Select rows from a table in random order:

SELECT * FROM `table` ORDER BY `field` RAND();

Fix broken images on a page, good for use with ajax:

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function fixBrokenImages(someDiv){
   someDiv.find("img").bind("error", function(){
         $(this).attr("src", "no-image.jpg");
   });
}

I use this snippet locally to prevent caching in mamp:

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<FilesMatch "\.(html|htm|js|css|jpg|png|gif)$">
FileETag None
<IfModule mod_headers.c>
Header unset ETag
Header set Cache-Control "max-age=0, no-cache, no-store, must-revalidate"
Header set Pragma "no-cache"
Header set Expires "Wed, 11 Jan 1984 05:00:00 GMT"
</IfModule>
</FilesMatch>

Working on something with jsfiddle-esque mod rewrite happening, this basically takes up to 3 get vars, but the urls can look like this: mysite.com/one/two/three

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RewriteEngine on
 
RewriteCond %{REQUEST_FILENAME} -f
RewriteRule ^ - [L]
 
RewriteRule ^([^/]+)/?$ index.php?folder=$1 [L]
RewriteRule ^([^/]+)/([^/]+)/?$ index.php?folder=$1&name=$2 [NC]
RewriteRule ^([^/]+)/([^/]+)/([^/]+)/?$ index.php?folder=$1&name=$2&revision=$3 [NC]

CSS3 selector with jQuery to alter css on even li tags:

$("li:nth-child(even)").css({backgroundColor : red, border : 1px solid black"});

CSS3 selectors with jQuery to select elements based on attribute values:

$("<p>I start with a<\/p>").insertBefore("img[src^='a']");
 
$("<p>I contain with a<\/p>").insertBefore("img[src*='a']");
 
$("<p>I end with a<\/p>").insertBefore("img[src$='a']");

Get the levenshtein distance between two strings:

echo levenshtein ( "zevan" , "kevin" );
// result is 2

Get the metaphone key for a string:

echo metaphone("zevan");
// result is SFN

I have a bunch more of these that I’ll post either over the weekend or on monday.

29. April 2011 | javascript, jquery, MYSQL, php, snippets | Comments (1)

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