PHP program to add item at the beginning of associative array

To add an item at the beginning of the associative array, the code is as follows−

Example

 Live Demo

<?php
   $arr = array( "p"=>"150", "q"=>"100", "r"=>"120", "s"=>"110", "t"=>"115", "u"=>"103", "v"=>"105", "w"=>"125" );
   echo "Initial Array...
";
   print_r($arr);
   array_unshift($arr,"100");
   echo "Updated Array...
";
   print_r($arr);
?>

Output

This will produce the following output−

Initial Array...
Array(
   [p] => 150
   [q] => 100
   [r] => 120
   [s] => 110
   [t] => 115
   [u] => 103
   [v] => 105
   [w] => 125
)
Updated Array...
Array (
   [0] => 100
   [p] => 150
   [q] => 100
   [r] => 120
   [s] => 110
   [t] => 115
   [u] => 103
   [v] => 105
   [w] => 125
)

Example

Let us now see another example−

 Live Demo

<?php
   $arr = array( 0=>"Ryan", 1=>"Kevin", 2=>"Jack" );
   echo "Initial Array...
";
   print_r($arr);
   array_unshift($arr,"Katie");
   echo "Updated Array...
";
   print_r($arr);
?>

Output

This will produce the following output−

Initial Array...
Array(
   [0] => Ryan
   [1] => Kevin
   [2] => Jack
)
Updated Array...
Array(
   [0] => Katie
   [1] => Ryan
   [2] => Kevin
   [3] => Jack
)