preg_replace() issue

[helloise]

im not sure how to do this: my code used the deprecated ereg_replace like this:

$name = ereg_replace(" ", "", $name);

 

i replaced it with this:

$name = preg_replace(" ", "", $name);  //this is line 65

 

but know get a warning:

Warning: preg_replace(): Empty regular expression on line 65

 

what am i doing wrong please?

thank you

[sasa]

$name = preg_replace("/ /", "", $name);

but for this i use str_replace() function

[helloise]

thanks so much!