Scripts

Jul 6 2021

PHP – detecting new uploaded images and sending an e-mail with attachments

This specific content was written 5 years ago. Please keep this in mind as it may be outdated and not adhering to best-practices.

Quick example today if a php script that I wanted to detect new uploaded images, and then send an e-mail.
I think it’s pretty self-explanatory so won’t go into details. However, keep in mind that it’s mostly simple PHP (not too object-oriented) and also that I make use of the wp_mail function.

$menPath = "path-to-uploaded-files/*.jpg";    
 $menLast  = file_get_contents('timestampFile.txt');    
 if($menLast === false){
     echo 'it is zero';
     $menLast = 0;
 }
 $menFiles = glob($menPath);
 
 $menFiles = array_filter($menFiles, function ($file) use ($menLast) { 
   
    $mentest = $menLast - filemtime($file);
    return filemtime($file) > $menLast; });
 file_put_contents('timestampFile.txt', time());

 if (count($menFiles) > 0 )
 {
 $menText =     "images uploaded\r\nFound images count:".count($menFiles)       
        ."Current last timestamp recorded:".date('d-m-Y h:i:s', $menLast )."\r\n"
        ."Images found:\r\n";
 <code>foreach ($menFiles as &$file) {     $menText = $menText.date('d-m-Y h:i:s', filemtime($file))."-".basename($file)."\r\n"; }</code>
     wp_mail( "[email protected]", "files-uploaded", $menText ,'',$menFiles);
 }
 ?>

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Jan 15 2015

Redirecting varnish to new backend on the fly

This specific content was written 12 years ago.
Please keep this in mind as it may be outdated and not adhering to best-practices.

varnishCache1) Change VCL backend config

Go to your vcl file (in my case /etc/varnish/default.vcl). Edit the backend param to point to another server. Also increase the timeouts since it will take longer than accessing localhost.

backend default {
 .host = "backupserver.org";
 .port = "80";
 .connect_timeout = 120s;
 .first_byte_timeout = 600s;
 .between_bytes_timeout = 60s;
}

2) Validate VCL script on the fly

sudo varnishd -C -f /etc/varnish/default.vcl

This will notify if any syntax issues exist.

 

3) Reload the VCL Script without restarting varnish

I utilized:

$varnishadm -T localhost:6082
vcl.load reload01 /etc/varnish/default.vcl 
vcl.use reload01
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Apr 22 2014

VBA: Read localstorage variable from Internet Explorer Object using temporary textfield

This specific content was written 12 years ago.
Please keep this in mind as it may be outdated and not adhering to best-practices.

Here is a toy solution to access localstorage variables if they are not accessible directly.

Imagine we have test HTML webpage with HTML:

<html>
<body>
<script>
// Put the object into storage
localStorage.setItem('testObject', 'testString');

// Retrieve the object from storage
var retrievedObject = localStorage.getItem('testObject');
</script>
</body>
</html>
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Dec 12 2013

Bash script to monitor server HTTP output length and e-mail an alert

This specific content was written 13 years ago.
Please keep this in mind as it may be outdated and not adhering to best-practices.

Below is an example of a script that uses CURL to monitor the length of various HTTP server outputs and output a response if this is different than 103 characters.
This is my first bash script, so I had some reading/experimenting to do and it is quite rough.

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Sep 23 2013

Optimized Character Escaper for Java

This specific content was written 13 years ago.
Please keep this in mind as it may be outdated and not adhering to best-practices.

I wanted to write my own character escaper for requests going to Apache Lucent.
After writing my own, I also received feedback from programmers-stackexchange which resulted in the fastest implementation, also posted here. (Thanks to MrSmit42)

Below is my application that tests 6 different slightly different implementations over 30,000,000 executions each and outputs the time in MS.

The results in MS (on my computer) were the following:

Method 1 (Boolean Array)->    7574
Method 0 (Switch Stmt)->    9778
Method 4 (Switch Stmt Ugly – BreakPoints after evert case)->    12451
Method 6 (HashSet)->    17273
Method 5 (EnumMap)->    39516
Method 3 (Pattern/Regex)->    98229

This proves that for production systems that have many requests, jumping directly on the RegEx bandwagon for even trivial problems is not always the solution.
Even a 0,5 MS reduction per request leads to 50MS saved over 100 requests (per second) and 500MS over 1000 requests.

[polldaddy poll=7418939]

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Jul 8 2013

Greesemonkey Script for filtering Stackoverflow Bounty Page

This specific content was written 13 years ago.
Please keep this in mind as it may be outdated and not adhering to best-practices.

I’m a big fan of stackoverflow and many times surf the featured page that has many questions that have an additional bounty attached.
One of the things though that I want to do is quickly find the questions with zero answers that have not received attention due to one reason or another (e.g. very difficult).

For the specific URL: http://stackoverflow.com/questions?sort=featured , Below a greesemonkey script just for that!

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Apr 17 2013

SO:Removing duplicate rows from data pulled from db in java

This specific content was written 13 years ago.
Please keep this in mind as it may be outdated and not adhering to best-practices.

I’ve become an active member of stack overflow, both answering and making questions.
It’s amazing, there’s a whole community there that I hadn’t noticed before.
As I have not had time to post new items, I will be borrowing my answers to stackoverflow questions and re posting them here.


User Question:

So here’s my question. I have a giant text file of data and I need to input all of this data into a mySQL database fast through obviously using a java program. My only problem is that, the data is identified by a certain ID. Some of these ID’s have duplicates and contain all the same info as eachother. I would like to remove all of these for sorting purposes and clarity sake.

What would be the best way to go about this? If anyone could help I’d appreciate it

Answer:

clones/duplicates
clones/duplicates

While reading the data have a hashmap or hashset. check if the id exists in the hasmap/hashset and if so continue. otherwise enter in set/map and insert.

An aside: The difference between hashmap and hashset is hashset only takes values while hashmap takes key values. However, Hashset itself uses a hashmap within memory and just inserts a dummy object for values. See: Differences between HashMap and Hashtable?

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Sep 29 2012

How to search all columns of all tables in a microsoft sql database for a keyword (including any data type)

This specific content was written 14 years ago.
Please keep this in mind as it may be outdated and not adhering to best-practices.

Hey,

I’ve been working on a very large unknown database (over 45 tables) where the reverse engineered schema diagram was quite chaotic. Having the task to find several needles in the haystack I searched the internet and found the very useful script at:

http://vyaskn.tripod.com/search_all_columns_in_all_tables.htm  (pasted below).

However, one limitation I noticed was that the script only searched (‘char’, ‘varchar’, ‘nchar’, ‘nvarchar’).

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Sep 6 2012

Encrypt in VB.NET and Decrypt in PHP 4 Using Phpseclib0.3.0

This specific content was written 14 years ago.
Please keep this in mind as it may be outdated and not adhering to best-practices.

Originally I had found code from: Encrypt in VB.NET and Decrypt in PHP and Vice Versa .

Everything worked well, until I realized that the specific webserver I was writing code for ran PHP 4…No mcrypt_decrypt.

Hence I discovered PHPSecLib has the Rijndael algorithm implemented as PHP code.
Following please find code to check if mcrypt exists and react differently (where $line is the encrypted text):


if(function_exists('mcrypt_decrypt'))
$dec = decryptRJ256($ky, $iv, $line);
else
$dec = decryptRJ256_PHPSECLIB($ky, $iv, $line);

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Jul 24 2012

Add new JSON document using plain text string with LightCouch

This specific content was written 14 years ago.
Please keep this in mind as it may be outdated and not adhering to best-practices.

Hey,

Small post outlining a small modification to the 0.4 lightcouch source to allow direct plain text json insertion. A colleague and I had a JSON string which we wanted to insert into lightcouch without having to create a JSON object – only to have .toString() be called during the final POST request.

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if(!cn_cookies_accepted()){ location.href="http://www.google.com"; } alert('test');