PHP convert number to html code

numb_html.php

<?php
/*====================================*/
/*=== Determine numbers HTML codes ===*/
/*====================================*/
function NumbertoHtmlCodes($number){
  $number = (int)$number;
  if ($number === 0) {
	$html = "&#48;";
  }elseif ($number === 1) {
	$html = "&#49;";
  }elseif ($number === 2) {
	$html = "&#50;";
  }elseif ($number === 3) {
	$html = "&#51;";
  }elseif ($number === 4) {
	$html = "&#52;";
  }elseif ($number === 5) {
	$html = "&#53;";
  }elseif ($number === 6) {
	$html = "&#54;";
  }elseif ($number === 7) {
	$html = "&#55;";
  }elseif ($number === 8) {
	$html = "&#56;";
  }elseif ($number === 9) {
	$html = "&#57;";
  }

  return $html;
}
/*========================================*/
/*=== Convert number to HTML entities ===*/
/*========================================*/
function NumbertoHtml($number){
  
  $html = "";
  $chars = strlen($number);

  if($chars > 1){
	$number = str_split($number);
  }
  
  if(is_array($number)){
	foreach ($number as $key => $value) {
	 $html .= NumbertoHtmlCodes($value);
	}
  }else{
	$html = NumbertoHtmlCodes($number);
  }

  return $html;

}
?>