arrays and associative arrays

arrays and associative arrays
<?php
//arrays	array is avariable which can storre more than one value
$users =  array();
$users = array ('rafigue', 'samir', 'vikram');
echo $users;	aray
print_r($users);
echo $users[2];	vikram
echo '<br><br>'.$users[0].'<br><br>;
$users[3] = 'anil';
print_r($users);
?>
indexed arrays <?php   $size=array("Big","Medium","Short");   echo "Size: $size[0], $size[1] and $size[2]";   ?>   find the lenght of array <?php   $size=array("Big","Medium","Short");   echo count($size);   ?>   associative arrays
$food = array ('briyani', 'pizza', 'salad');	normal array
$food = array ('briyani' =>500, 'pizza' =>200, 'salad'=>300);	second argument
echo $food('biryani');	500
print_r($food);	we wil give the key and value, key is biryani and 500 is value
echo $food(0);	undefined
	we cannot print the associative array use echo and key o
multi dimensional array

for each
we cant print by accessing individual elemnt so use for each
$food = array ('briyani' =>500, 'pizza' =>200, 'salad'=>300);	assocuative array lefr side is keys and right side is value
foreach($food as $f => $rs){	foreach($arrayname as $value)
echo $f.'<br>';
echo $rs. '<br/>;
echo '<strong>'.$f.'<strong><br>';	print key in bold
echo '<strong>'.$f.'<strong> --rs.';	with string
how to load the values food["biryani"] = "500"; food["pizza"] = "200"; how to access <?php     $salary=array("Sonoo"=>"350000","John"=>"450000","Kartik"=>"200000");     echo "Sonoo salary: ".$salary["Sonoo"]."<br/>";   echo "John salary: ".$salary["John"]."<br/>";   echo "Kartik salary: ".$salary["Kartik"]."<br/>";   ?>   <?php     $salary["Sonoo"]="350000";     $salary["John"]="450000";     $salary["Kartik"]="200000";     echo "Sonoo salary: ".$salary["Sonoo"]."<br/>";   echo "John salary: ".$salary["John"]."<br/>";   echo "Kartik salary: ".$salary["Kartik"]."<br/>";   ?>     Sonoo salary: 350000 John salary: 450000 Kartik salary: 200000 <?php     $salary=array("Sonoo"=>"550000","Vimal"=>"250000","Ratan"=>"200000");   foreach($salary as $k => $v) {   echo "Key: ".$k." Value: ".$v."<br/>";   }   ?>     Key: Sonoo Value: 550000 Key: Vimal Value: 250000 Key: Ratan Value: 200000
multi dimensional array
students
	boys
	vamsi
	krishna
	sai
	girls
	sita
	geeta
<?php	rosy
$students = array('boys' => array ('rafigue', 'vikram', 'srikant'), 'girls' => array('sita', 'geeta', 'rosy'));	boys is arraay name and rafigue is values
echo $students['boys'][0];	boys is arrray
?>	print the data in that array
mutli diensiona can be 2d 3d, 4d,5d etc
2d - $name[] []
3d - $name [] []
2d arrray
/*
$laptop = array(
array ("rahul", "dell", 10),	array in array called 2 d array
array ('sonam", "hp", 20),
array ("sumit", "zed", 30)
};
*/
$laptop [0][] = "rahul";
$laptop [0][] = 'dell';
$laptop[0][] = 10;
$laptop[1][] = "sonam";
$laptop[1][] = "sonvam";
$laptop[1][] = "sonasm";
$laptop[2][] = "sonasm1";
$laptop[2][] = "sonasm2";
$laptop[2][] = "sonasm3";
echo $laptop[2][2];
echo $laptop[0][0];	access the 2d arays
$emp = array     (     array(1,"sonoo",400000),     array(2,"john",500000),     array(3,"rahul",300000)     );   Id Name Salary 1 sonoo 400000 2 john 500000 3 rahul 300000 <?php     $emp = array     (     array(1,"sonoo",400000),     array(2,"john",500000),     array(3,"rahul",300000)     );      for ($row = 0; $row < 3; $row++) {     for ($col = 0; $col < 3; $col++) {       echo $emp[$row][$col]."  ";     }     echo "<br/>";   }   ?>     1 sonoo 400000 2 john 500000 3 rahul 300000 multi d associative array	if we know 2d aray , we can create simply 3d also
$students = array (
"vamsi" => array ("maths" => 100, "science" => 80, "social" => 75),
"krishna" => array ("maths" => 90, "science" => 100, "social" => 45),
"nvk" => array ("maths" => 80, "science" => 40, "social" => 25),
);
$students["vamsi"]["maths"] = 100;
$students["vamsi"]["science"] = 80;
$students["vamsi"]["social"] = 75;
$students["krishna"]["maths"] = 90;
$students["krishna"]["science"] = 100;
$students["krishna"]["social"] = 45;
$students["nvk"]["maths"] = 80;
$students["nvk"]["science"] = 40;
$students["nvk"]["social"] = 25;	20
echo $students["vamsi"]["science"] ;
https://www.youtube.com/watch?v=kd0_7NFSlWo
php sort <?php     $season=array("summer","winter","spring","autumn");     sort($season);   foreach( $season as $s )     {       echo "$s<br />";     }     ?>

autumn
spring
summer
winter

array reverse

<?php    
$season=array("summer","winter","spring","autumn");    
$reverseseason=array_reverse($season);  
foreach( $reverseseason as $s )    
{    
  echo "$s<br />";    
}    
?>    

.

autumn
spring
winter
summer

how to search in arrray

<?php    
$season=array("summer","winter","spring","autumn");    
$key=array_search("spring",$season);  
echo $key;    
?>    








2


how to return the matching elements of array



<?php    
$name1=array("sonoo","john","vivek","smith");    
$name2=array("umesh","sonoo","kartik","smith");    
$name3=array_intersect($name1,$name2);  
foreach( $name3 as $n )    
{    
  echo "$n<br />";    
}    
?>    








 


  



  

 

  

1. <?php    

  

 

  

2. $season=array("summer","winter","spring","autumn");    

  

 

  

3. echo "Season are: $season[0], $season[1], $season[2] and $season[3]";    

  

Season are: summer, winter, spring and autumn

 

  

4. ?>    

  

 

  

  

 

  

  

 

  

  

 

  

1. <?php    

  

 

  

2. $salary=array("Sonoo"=>"550000","Vimal"=>"250000","Ratan"=>"200000");    

  

Array ( [SONOO] => 550000 [VIMAL] => 250000 [RATAN] =>
  200000 )

 

  

3.
  print_r(array_change_key_case($salary,CASE_UPPER));   

  

 

  

4. ?>    

  

 

  

  

 

  



  

 

  

1. <?php    

  

 

  

2. $salary=array("Sonoo"=>"550000","Vimal"=>"250000","Ratan"=>"200000");    

  

Array ( [sonoo] => 550000 [vimal] => 250000 [ratan] =>
  200000 )

 

  

3.
  print_r(array_change_key_case($salary,CASE_LOWER));   

  

 

  

4. ?>   

  

 

  

  

 

  

  

 

  

rray_chunk() function splits array into chunks.

  

 

  

1. <?php    

  

 

  

2. $salary=array("Sonoo"=>"550000","Vimal"=>"250000","Ratan"=>"200000");    

  

Array ( 

 

  

3.
  print_r(array_chunk($salary,2));   

  

[0] => Array ( [0] => 550000 [1] => 250000 ) 

 

  

4. ?>    

  

[1] => Array ( [0] => 200000 )

 

  

  

)

 

  

  

 

  
how to count the number of elemens in array
  

 

  

  

 

  

1. <?php    

  

 

  

2. $season=array("summer","winter","spring","autumn");    

  

4

 

  

3.
  echo count($season);    

  

 

  

4. ?>    

  

 




<?php  
    $snacks = array('drinks' => array('cold coffee', 'traffic jam', 'Espresso',  
    'Americano'), 'bevrage' => array('spring rolls', 'nuddles'));  
    echo count($snacks, 1);  
    echo "</br>";  
    echo sizeof($snacks, 1);      
?>  



8

8




how to remove the elements in array



<?php  
    $color = array("Blue", "Red", "Black", "Green", "Gray", "White");  
    echo "Arraylist: ";  
    print_r($color);  
    $remove = array_shift($color);  
    echo "</br>Removed element from array is: ";  
    print_r($remove);  
    echo "</br> Updated arraylist: ";  
    print_r($color);  
?>     











Arraylist: Array ( [0] => Blue [1] => Red [2] => Black [3] => Green [4] => Gray [5] => White ) 
Removed element from array is: Blue
Updated arraylist: Array ( [0] => Red [1] => Black [2] => Green [3] => Gray [4] => White )





<?php  
    $game = array(1 => "Carom", 2 => "Chess", 3 => "Ludo");  
    echo "Removed element: ".array_shift($game). "</br>";  
    print_r($game);  
?>    














Removed element: Carom
Array ( [0] => Chess [1] => Ludo )



<?php  
    $numbers = array(25, 12, 65, 37, 95, 38, 12);  
    $removed = array_shift($numbers);  
    echo "Removed array element is: ". $removed;   
    echo "</br> Update array is: ";  
    print_r($numbers);  
?>  











Removed array element is: 25
Update array is: Array ( 
[0] => 12 
[1] => 65 
2] => 37 
[3] => 95 
[4] => 38 
[5] => 12 
)









how to re








sonoo
smith

how to remove thelast element in arrya







<?php  
    $car = array("Mercedes", "Creta", "Audi", "Chevrolet", "Skoda");  
    echo "Arraylist: ";  
    print_r($car);  
    $remove = array_pop($car);  
    echo "</br>Removed element from array is: ";  
    print_r($remove);  
    echo "</br> Updated arraylist: ";  
    print_r($car);  
?>     




Arraylist: Array ( [0] => Mercedes [1] => Creta [2] => Audi [3] => Chevrolet [4] => Skoda ) 
Removed element from array is: Swift
Updated arraylist: Array ( [0] => Mercedes [1] => Creta [2] => Audi [3] => Chevrolet )

<?php  
    $mall = array(1 => "DLF", 2 => "GIP", 3 => "V3S");  
    echo "Removed element: ".array_pop($a). "</br>";  
    print_r($mall);  
?>     








Removed element: Jupiter
Array ( [1] => DLF [2] => GIP )




<?php  
    $numbers = array(45, 76, 23, 91, 82, 39);  
    $removed = array_pop($numbers);  
    echo "Removed array element is: ". $removed;   
    echo "</br> Update array is: ";  
    print_r($numbers);  
?>     








Removed array element is: 39
Update array is: Array ( [0] => 45 [1] => 76 [2] => 23 [3] => 91 [4] => 82 )

array

print-r

echo

print_r

array

associative array

echo

print_r how to whats this array or variable how to print total data in array how to print the data in array using index how to add the names into an array how to prints the data in array after newly added what is difference between associative and normal array whaat is meant by associative array and wahts is the key and value how to access associateive array values how to print the array how to print the array

2d array another rway representation

access array

multi dimensional 2d aassociative array how to add some more elements into 2d arrays, and what is the alternative way to creat any arrays? how to access or print 2d arrays how to repreent 2d associative array how to represent 2d associative arrays how to acces 2d associatieve arrays