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What is Array short() function in php?

Sorting the array by using key as well as value.

Sort by value :- php provide many functions to sort an array. We can sort an array by value, key or randomly.

  • sort() :- sort function is used to sort the array in ascending order.
  • asort() :- Sorts an array and also maintain the index position.
  • rsort() :- it sort an array in reverse order.
  • arsort() :- this function will sort an array in reverse order and maintain index association like asort + rsot + sort = arsort( )
  • natsort() :- sorts an array using natural order. Means it sorts alphanemeric string in such a way that human sorts the key/value associations.
  • natcasesort() :-

    • Sort() Funtion Example.

    File Name:- index.php

    <?php
    $num = array(1,6,50, 5, 2, 60, 55);
    print_r($num);
    sort($num);
    echo "
    "; print_r ($num);
    ?>


    Output :-

    Output :- Array ( [0] => 1 [1] => 6 [2] => 50 [3] => 5 [4] => 2 [5] => 60 [6] => 55 ) Array ( [0] => 1 [1] => 2 [2] => 5 [3] => 6 [4] => 50 [5] => 55 [6] => 60 )


    Sort() Funtion Example.

    File Name:- index.php

    <?php $flowers = array("rose", "daisy" , "orchid", "tulip", "camomile");
    sort($flowers);
    for ($i=0; $i <= 4; $i++) //prints the array elements
    echo $flowers[$i];
    ?>


    Output :-

    camomile
    daisy
    orchid
    rose
    tulip

    Example.

    File Name:- index.php

    <?php
    $num = array("mahtab","alam","zeba","kalam","bebs");
    print_r($num);
    sort($num);
    echo "
    after sorting value :
    "; print_r ($num);
    ?>


    Output :-

    Array ( [0] => mahtab [1] => alam [2] => zeba [3] => kalam [4] => bebs )
    after sorting value :Array ( [0] => alam [1] => bebs [2] => kalam [3] => mahtab [4] => zeba )

    Example. asort()

    File Name:- index.php

    <?php $name = array("m"=>"mahtab","a"=>"alam","b"=>"bebs");
    print_r($name);
    asort($name);
    echo "
    after sorting value :";
    print_r ($name);
    ?>


    Output :-

    Output :- Array ( [m] => mahtab [a] => alam [b] => bebs )
    after sorting value :Array ( [a] => alam [b] => bebs [m] => mahtab )

    Example. rsort()

    File Name:- index.php

    <?php $name = array("m"=>"mahtab","a"=>"alam","b"=>"bebs");
    print_r($name);
    rsort($name);
    echo "
    after sorting value :";
    print_r ($name); ?>


    Output :-

    Output :- Array ( [m] => mahtab [a] => alam [b] => bebs )
    after sorting value :Array ( [0] => mahtab [1] => bebs [2] => alam )

    Example. natsort()

    File Name:- index.php

    <?php $name1 = $name2 = array("emp01","emp50","emp20","emp5");
    sort($name1);
    print_r($name1);
    natsort($name2);
    print_r($name2);
    ?>


    Output :-


    Sort array by key.

  • ksort() :- this function sorts an array by key maintaining the correction with the value. This function is useful for associative array.
  • krsort() :- sort an array by key in reverse order maintaing the correlation with the value. This is useful for associative array.

    • Example. ksort()

    File Name:- index.php

    <?php $ar = array(30=>"raj",10=>"mahtab",50=>"alka", 2=>"kalam");
    ksort($ar);
    print_r($ar);
    ?>


    Output :-

    Array ( [2] => kalam [10] => mahtab [30] => raj [50] => alka )





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