Tag Archives: php tutorials

Date difference using PHP

<?php

// start date comes here
$start_date='2010-11-10';

//end date come here-or you can use today's timestamp

$end_date='2014-06-16';

//converting the start and end date to timestamp

$start_date_timestamp=strtotime($start_date);
$end_date_timestamp=strtotime($end_date);

$time_difference=abs($start_date_timestamp - $end_date_timestamp);
echo $time_difference;

//ouput:113526000

// Converting this difference as in days

//difference in days
$days = $time_difference/(60*60*24);
echo 'Days '.$days;

//ouput:1313.9583333333

//difference in months
$months = $time_difference/(60*60*24*30);
echo 'Months '.$months;

//ouput:43.798611111111

//difference in Years
$years = $time_difference/(60*60*24*365);
echo 'Years '.$years ;
//ouput: 3.5998858447489

?>

<?php

// start date comes here

$start_date='2010-11-10';

//end date come here-or you can use today's timestamp

$end_date='2014-06-16';

//converting the start and end date to timestamp

$start_date_timestamp=strtotime($start_date);

$end_date_timestamp=strtotime($end_date);

$time_difference=abs($start_date_timestamp - $end_date_timestamp);

echo $time_difference;

//ouput:113526000

// Converting this difference as in days

//difference in days

$days = $time_difference/(60*60*24);

echo 'Days '.$days;

//ouput:1313.9583333333

//difference in months

$months = $time_difference/(60*60*24*30);

echo 'Months '.$months;

//ouput:43.798611111111

//difference in Years

$years = $time_difference/(60*60*24*365);

echo 'Years '.$years ;

//ouput: 3.5998858447489

Returns the absolute path name. Syntax: string realpath(string $path) realpath() expands all symbolic links and resolbes references to ‘/./’ ,’/../’ and extra ‘/’ characters in the input path and returns the canonical absolute pathname example ——-

<?php
chdir('/vasanthan/mydoubts/');
echo realpath('./../../test/hello');
?>

<?php

chdir('/vasanthan/mydoubts/');

echo realpath('./../../test/hello');

Out put of the above as below /test/hello on windows realpath will change unix style paths to windows… Read More »

Scope Resolution Operator-::

Double colon (::) this is used to access the static,constant and overridden properties or methods of a class. Example1 ——–

<?php

class mydoubts{


const mydoubts_val='mydoubts.in';

}

$classname='mydoubts';
echo $classname::mydoubts_val;
echo mydoubts::mydoubts_val;

?>

<?php

class mydoubts{

const mydoubts_val='mydoubts.in';

}

$classname='mydoubts';

echo $classname::mydoubts_val;

echo mydoubts::mydoubts_val;

self,parent and static are used to access the value inside the class Example2 ——–

<?php

Class Vasanthan extends mydoubts
{

  public static $inside_val='hello vasanthan';
  
  public static function innerdisplay()

   {
      echo parent::mydoubts_val;

      echo self::$inside_val;

   }

       $classname='Vasanthan';
    echo $classname::innerdisplay();

 Vasanthan::innerdisplay();

}

?>

<?php

Class Vasanthan extends mydoubts

{

public static $inside_val='hello vasanthan';

public static function innerdisplay()

{

echo parent::mydoubts_val;

echo self::$inside_val;

}

$classname='Vasanthan';

echo $classname::innerdisplay();

Vasanthan::innerdisplay();

}