I have the following string:
Input:
$str = "I want to remove only comma from this string, how ?";
I want to remove commas from $str, I'm new in programming and I don't understand how regex works.
Regex: (?<!\d)\,(?!\d)
(\,|\.) for matching exact either , or .
(?!\d) should not contains digits ahead.
(?<!\d) should not contains digit behind.
PHP code:
<?php
$str = "I want to remove only comma from this string, how. ? Here comma and dot 55,44,100.6 shouldn't be removed";
echo preg_replace("/(?<!\d)(\,|\.)(?!\d)/", "", $str);
Output:
I want to remove only comma from this string how ? Here comma 55,44,100 shouldn't be removed
use str_replace.
Example
$str = "I want to remove only comma from this string, how ?";
$str = str_replace(",", "", $str);
Explaination
As you can see there is 3 arguments we pass in str_replace
"," => this one is what you want to replace
"" => this one is value that will replace first argument value. we pass blank so it will replace comma to blank
this one is string where you want to replace.