Convert number into thousand and add K like in Facebook and other

functions.php

<?php

function return_with_k_in_number( $number ) {

	if( $number>1000 ) {

	    $x = round($number);
	    $x_number_format = number_format($x);
	    $x_array = explode(',', $x_number_format);
	    $x_parts = array('K', 'M', 'B', 'T');
	    $x_count_parts = count($x_array) - 1;
	    $x_display = $x;
	    $x_display = $x_array[0] . ((int) $x_array[1][0] !== 0 ? '.' . $x_array[1][0] : '');
	    $x_display .= $x_parts[$x_count_parts - 1];

	    $number = $x_display;
	}
	return $number;
}