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<?php
$text = "Hello World";
if ( preg_match( "/r.*?d/", $text, $array ) ) {
  print "<pre>\n";
  print_r( $array );
  print "</pre>\n";
}
?>

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<?php
$test = "126.122.95.52";
if ( preg_match( "/(\d+)\.(\d+)\.(\d+)\.(\d+)/", $test, $arr ) ) {
  print "<pre>\n";
  print_r( $arr );
  print "</pre>\n";
}
?>

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<?php
$arr = array('one', 2, 'three');
$arr[] = 'the fourth element';
echo $arr[3]."<br>";
echo $arr[1];
?>

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<?php
  $arr1 = array( "Jan ", "Feb ", "Mar " );
  $arr2 = array( "11 ", "12 ", "13 " );
  $arr3 = array( "2001", "2002", "2003" );

  echo( $arr1[1] . $arr2[0] . $arr3[1] );
?>

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<?php
  $arr[0] = 32;
  $arr[1] = 52.15;
  $arr[2] = $arr[0] + $arr[1];

  echo "Result = "."$arr[0] + $arr[1] = $arr[2]";
 ?>

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<?php
$num['A'] = 12;
$num['A']++;
$num['B'] = 3;

$num['total'] = $num['A'] + $num['B'];
if ($num['total'] > 15) {
    print "Greater Than 15.<br>";
}
print 'Number is : ' . $num['A'];
?>

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<?php
     $arr[] = "PHP";
     $arr[] = "C";
     $arr[] = "C++";
     $arr[] = "Java";
     $arr[] = "Perl";
     $arr[] = "Python";
     $arr[] = "Ruby";

     foreach($arr as $lang)
     {
          if(!strcmp($lang, "PHP")){
               print("<b>" . $lang . "</b> <br />");
          }else{
               print($lang . " <br />");
          }
     }
?>

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<?php
class Cat {
    var $age;
    function Cat($new_age){
        $this->age = $new_age;
    }
    function Birthday(  ){
        $this->age++;
    }
}

$a = new Cat(1);
echo "Age is $a->age <br />";
echo "Birthday<br/>";

$a->Birthday(  );
echo "Age is $a->age <br />";
?>

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<?php
 class Item {
   var $name;

   function Item( $name="") {
     $this->name = $name;
   }

   function setName( $n) {
     $this->name = $n;
   }

   function getName () {
     return $this->name;
   }
 }

 $item = new Item("5");
 print $item->getName ();
?>

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<?php
class Staff
{
    function __construct()
    {
        echo "<p>Staff constructor called!</p>";
    }
}

class Manager extends Staff
{
    function __construct()
    {
        parent::__construct();
        echo "<p>Manager constructor called!</p>";
    }
}

$employee = new Manager();
?>

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<?php
class Dog {
    function __construct($name='No-name', $breed='breed unknown', $price = 23) {
        $this->name = $name;
        $this->breed = $breed;
        $this->price = $price;
    }
}
$aDog = new Dog();
$tweety = new Dog('A', 'a'); 

printf("<p>%s is a %s and costs \$%.2f.</p>\n",
$aDog->name, $aDog->breed, $aDog->price); 

$tweety->price = 34.56; 

printf("<p>%s is a %s and costs \$%.2f.</p>\n",
$tweety->name, $tweety->breed, $tweety->price);
?>

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<?php
session_start();
($_SESSION['count']) ? $_SESSION['count']++ : $_SESSION['count'] = 1;
?>

 You have been stay here <?php echo( $_SESSION['count'] ); ?> times in this session

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<script>
document.write("<?php echo 'hello!'; ?>");
</script>

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<?php
echo "<script language=\"JavaScript\">";
echo "alert(\"Hello World\");";
echo "</script>";
?>

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<?php $phpvar=1; ?>
<script type="text/javascript">
jsvar = 3;
//Assign jsvar javascript variable value to php variable $phpvar
'<?php $phpvar="<script>document.write(jsvar)</script>"; ?>';
</script>
<?php echo $phpvar; ?>

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<script type="text/javascript">
var counter = 0;
for(i=0;i<10;i++){
counter++;
}
</script>

<?php
$phpvar= "<script>document.write(counter)</script>";
echo $phpvar;
?>

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<?php session_start(); $_SESSION['nume']='Sanat';?>
<!-- HTML code -->
<script type="text/javascript">
alert("Welcome <?php echo $_SESSION['nume']; ?>");
</script>

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<script type="text/javascript">
function test(){
	document.getElementById("php_code").innerHTML="<?php
		$w="do";
		switch($w){
		case 'do': echo "You will be logged in?"; break;
		case 'loguot': echo "You will be logged out?" ; break;
		}
	?>";
}
</script> 

<a href="" onclick="test(); return false;"> test </a> <br>
<span id="php_code"> </span>

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<?php
    if(isset($_GET[action])){
	// Retrieve the GET parameters and executes the function
	  $funcName	 = $_GET[action];
	  $vars	  = $_GET[vars];
	  $funcName($vars);
	 } else if (isset($_POST[action])){
	  // Retrieve the POST parameters and executes the function
	  $funcName	 = $_POST[action];
	 $vars	  = $_POST[vars];
	 $funcName($vars);
	 } else {
		echo "<INPUT NAME='click_me' TYPE='button' ONCLICK='javascript:javaFunction()' VALUE='Click Me'>";
	 }

   function phpFunction($v1){
	// makes an array from the passed variable
	// with explode you can make an array from string.
	$varArray = explode(",", $v1);	

	echo "First Value: $varArray[0] <BR>";
	echo "Second Value: $varArray[1]<BR>";
   }
  ?> 

  <SCRIPT language="javascript">
   function javaFunction(){
	// In the varArray are all the variables you want to give with the function
	var varArray = new Array();
	varArray[0] = "Hello";
	varArray[1] = "World";

	// the url which you have to pass an action to the GET- or POST-variable
	var url="<?php echo $_SERVER[PHP_SELF];?>?action=phpFunction&vars="+varArray;

	// Opens the url in the same window
	   window.open(url, "_self");
	  }
  </SCRIPT>