How to get numeric index of associative array in PHP?

To get the numeric index of an associative array, the code is as follows−

Example

 Live Demo

<?php    $arr = array( "a"=>"5", "b"=>"20", "c"=>"35", "d"=>"55");    $keys = array_keys( $arr );    echo "Array key and value...
";    for($x = 0; $x < sizeof($arr); $x++ ) {       echo "key: ". $keys[$x] . ", value: ". $arr[$keys[$x]] . "
";    } ?>

Output

This will produce the following output−

Array key and value... key: a, value: 5 key: b, value: 20 key: c, value: 35 key: d, value: 55

Example

Let us now see another example−

 Live Demo

<?php    $arr = array( "p"=>"150", "q"=>"100", "r"=>"120", "s"=>"110");    $keys = array_keys( $arr );    echo "Array key and value...
";    for($x = 0; $x < sizeof($arr); $x++ ) {       echo "key: ". $keys[$x] . ", value: ". $arr[$keys[$x]] . "
";    }    $arr[$keys[3]] = "25";    echo "
Updated Array key and value...
";    for($x = 0; $x < sizeof($arr); $x++ ) {       echo "key: ". $keys[$x] . ", value: ". $arr[$keys[$x]] . "
";    } ?>

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: 120 key: s, value: 25