I'm trying to replace multiple spaces with a single space. When I use ereg_replace, I get an error about it being deprecated.
ereg_replace("[ \t\n\r]+", " ", $string);
Is there an identical replacement for it. I need to replace multiple " " white spaces and multiple nbsp white spaces with a single white space.
Use preg_replace() and instead of [ \t\n\r] use \s:
$output = preg_replace('!\s+!', ' ', $input);
From Regular Expression Basic Syntax Reference:
\d, \w and \s
Shorthand character classes matching digits, word characters (letters, digits, and underscores), and whitespace (spaces, tabs, and line breaks). Can be used inside and outside character classes.
/(?:\s\s+|\n|\t)/ => 1410 (slowest), /\s+/ => 611 (ok'ish), /\s\s+/ => 496 (fastest). The last one does not replace single \n or \t, but thats ok for my case.
$output = preg_replace('/\s+/', ' ',$input);
\s is shorthand for [ \t\n\r]. Multiple spaces will be replaced with single space.
preg_replace("/[[:blank:]]+/"," ",$input)
mb_ereg_replace('[[:blank:]]+', ' ', $input)or mb_ereg_replace('\s+', ' ', $input) depending on the use case.