ichadhr

1. What is the output of the following code:

$a = '1';
$b = &$a;
$b = "2$b";
echo $a.", ".$b;

2. What is the difference between $_GET and $_POST?
3. What does the isset() function mean?

ichadhr

1. What is the output of the following code:

$a = '1';
$b = &$a;
$b = "2$b";
echo $a.", ".$b;

2. What is the difference between $_GET and $_POST?
3. What does the isset() function mean?

ichadhr

1. What is the output of the following code:

$a = '1';
$b = &$a;
$b = "2$b";
echo $a.", ".$b;

2. What is the difference between $_GET and $_POST?
3. What does the isset() function mean?
4. Convert bellow conditional statements to ternary conditional operator?

ichadhr

# VERY IMPORTANT! After each kernel update or dkms rebuild the modules must be signed again with the script
# ~/.ssl/sign-all-modules.sh

# Place all files in ~/.ssl folder
mkdir ~/.ssl
cd ~/.ssl

# Generate custom keys with openssl
openssl req -new -x509 -newkey rsa:2048 -keyout MOK.priv -outform DER -out MOK.der -nodes  -subj "/CN=Owner/"

ichadhr

public class FileDownload {
 private volatile bool _completed;

 public void DownloadFile(string address, string location) {

  using(WebClient client = new WebClient()) {
   Uri Uri = new Uri(address);
   _completed = false;

   client.DownloadFileCompleted += new System.ComponentModel.AsyncCompletedEventHandler(Completed);

ichadhr

SELECT
    c.CONSTRAINT_NAME,
    cu.TABLE_NAME AS ReferencingTable, cu.COLUMN_NAME AS ReferencingColumn,
    ku.TABLE_NAME AS ReferencedTable, ku.COLUMN_NAME AS ReferencedColumn
FROM INFORMATION_SCHEMA.REFERENTIAL_CONSTRAINTS c
INNER JOIN INFORMATION_SCHEMA.CONSTRAINT_COLUMN_USAGE cu
ON cu.CONSTRAINT_NAME = c.CONSTRAINT_NAME
INNER JOIN INFORMATION_SCHEMA.KEY_COLUMN_USAGE ku
ON ku.CONSTRAINT_NAME = c.UNIQUE_CONSTRAINT_NAME
WHERE ku.TABLE_NAME = 'FOO'

ichadhr

using System;
using System.Collections.Generic;
using System.Linq;

public class PercentRounder
{
    public class PercentInfo
    {
        public int Index;
        public int Percent;

ichadhr

function in_array_r($needle, $haystack, $strict = false) {
  foreach ($haystack as $item) {
    if (($strict ? $item === $needle : $item == $needle) || (is_array($item) && in_array_r($needle, $item, $strict))) {
      return true;
    }
  }
return false;
}

// sample

ichadhr

```php
$array=[
    ['day'=>'11','movements'=>'1'],
    ['day'=>'11','movements'=>'1'],
    ['day'=>'11','movements'=>'1'],
    ['day'=>'12','movements'=>'1'],
    ['day'=>'12','movements'=>'1'],
    ['day'=>'12','movements'=>'1']
];
foreach($array as $row){  // iterate all rows

ichadhr

simple ordering lat long MySQL

SELECT
	*,
	6371 * ASIN(
		SQRT(
			POWER( SIN( ( '-8.637420' - sample.lat ) * pi( ) / 180 / 2 ), 2 ) + COS( '-8.637420' * pi( ) / 180 ) * COS( sample.lat * pi( ) / 180 ) * POWER( SIN( ( '115.253001' - sample.lng ) * pi( ) / 180 / 2 ), 2 ) 
		) 
	) AS distance 
FROM