Replace numbers, dash, dot or space from the start of a string with PHP regex

Question

I\'m trying to replace numbers with optional, dash, dot or space from the start of a string, my pattern does not seem to work. I want to replace this:

01. PHP
0         


        

Answer 1

Can try this

$t = "01. PHP";

$pattern = '/^[0-9\.\s\-]+/';

echo preg_replace($pattern, '', $t);

Output

PHP

Regex Explanation

^ assert position at start of the string
0-9 a single character in the range between 0 and 9
\. matches the character . literally
\s match any white space character [\r\n\t\f ]
\- matches the character - literally