Can't get str_replace() to strip out spaces in a PHP string

Question

Hi, I am getting a PHP string which I need to strip the spaces out of. I have used the following code but when I echo $classname it just displays the string sti

Answer 1

The problem might be the character not being a space, but another whitespace character.

Try

$classname = preg_replace('/\s/', '', $fieldname);

Answer 2

use trim like this

TRIM($fieldname);

EDIT:

preg_replace('/\s+/', '', $fieldname);

Answer 3

Try to add u-parameter for regex-pattern, because a string can have UTF-8 encoding:

$classname  =  preg_replace('/\s+/u', '', $fieldname);

Answer 4

It could be that the space is not really a space, but other form of whitesspace.

You might want to try:

$classname = preg_replace('/\s+/', '', $fieldname);

From here.

Answer 5

If you know the white space is only due to spaces, you can use:

$classname = str_replace(' ','',$fieldname ); 

But if it could be due to space, you can use:

$classname = preg_replace('/\s+/','',$fieldname )

Answer 6

<?php
  $fieldname = "I  am  21  Years  Old";
  $classname = str_replace(' ', '', $fieldname);
  echo $classname;
?>

This runs perfectly. Check value return by this function: the_sub_field('venue_title');