Echo empty space as html char - php

Question

I have a string 90001 90002. I need to see which html special char is represented in the empty space. (It could be an empty space - or it could be a textual line-break masquerading as a space in HTML see here. Maybe other possibilities that I'm not aware of..)
I would like to echo a string and show the empty spaces as html char (e.g. $result = "90001 90002").
I've tried using html_entities but that doesn't cover spaces. Also neither does htmlspecialchars.
How would I go about doing this?
If possible I would like a purely PHP & html solution. If necessary - CSS. And if impossible otherwise, javascript will have to do..

Answer 1

Just an out-of-box thinking. I had the same issue but looked into using JavaScript's encodeURIComponent() function:
$(function () {
$("div").html(function () {
return encodeURIComponent($(this).html());
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div>90001 90002</div>
Used jQuery as I am kinda lazy. You can do the same in JavaScript this way:
<div>90001 90002</div>
<script>
var div = document.querySelector("div");
div.innerHTML = encodeURIComponent(div.innerHTML);
</script>
Just letting you know that this is better to handle in client side than in the server side.
Update 2: Getting the HTML content and updating the text of the HTML:
$(function () {
$("div").text(function () {
return $(this).html().replace(/[\u00A0-\u9999<>\&]/gim, function(i) {
return '&#'+i.charCodeAt(0)+';';
});
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div>90001—90002</div>
Something like this...

Answer 2

<?php
$mystring = "90001 90002";
$mystring = str_replace(" "," ",$mystring);
echo $mystring;
?>
I hope it helps

Answer 3

function removeWhiteSpace($text)
{
$text = preg_replace('/[\t\n\r\0\x0B]/', '', $text);
$text = preg_replace('/([\s])\1+/', ' ', $text);
$text = trim($text);
return $text;
}

Answer 4

Editing the Answer :
if you need to do it using PHP , Use urlencode function , which would hep to resolve it
<?php
$query_string = 'foo=' . urlencode($foo) . '&bar=' . urlencode($bar);
echo '<a href="mycgi?' . htmlentities($query_string) . '">';
?>
But they have set backs which is mentioned in the notes section of the documentation.
http://php.net/manual/en/function.urlencode.php
You can also use functions like htmlentities,rawurlencode in php .
if you want to use it in javascript , You can use escape function.
https://www.w3schools.com/jsref/jsref_escape.asp