How to access an associative array by integer index in PHP?

To access an associative array by integer index in PHP, the code is as follows−

Example

<?php
   $arr = array( "p"=>"150", "q"=>"100", "r"=>"120", "s"=>"110");
   $keys = array_keys( $arr );
   echo "Array key and value...\n";
   for($x = 0; $x < sizeof($arr); $x++ ) {
      echo "key: ". $keys[$x] . ", value: ". $arr[$keys[$x]] . "\n";
   }
?>

Output

This will produce the following output−

Array key and value...
key: p, value: 150
key: q, value: 100
key: r, value: 120
key: s, value: 110

Example

Let us now see another example−

<?php
   $arr = array( "p"=>"150", "q"=>"100", "r"=>"120", "s"=>"110");
   $keys = array_keys( $arr );
   echo "Array key and value...\n";
   for($x = 0; $x < sizeof($arr); $x++ ) {
      echo "key: ". $keys[$x] . ", value: ". $arr[$keys[$x]] . "\n";
   }
   $arr[$keys[2]] = "20";
   $arr[$keys[3]] = "10";
   echo "\nUpdated Array key and value...\n";
   for($x = 0; $x < sizeof($arr); $x++ ) {
      echo "key: ". $keys[$x] . ", value: ". $arr[$keys[$x]] . "\n";
   }
?>

Output

This will produce the following output−

Array key and value... 
key: p, value: 150 
key: q, value: 100 
key: r, value: 120 
key: s, value: 110 
Updated Array key and value...
 key: p, value: 150 
key: q, value: 100 
key: r, value: 20 
key: s, value: 10