regular expression for string comparssion using php

Question

I am new to regex in php, I am trying to get the values between @ and . in a string. for example if a string contains value abc@gmail.com

Answer 1

$str = 'abc@gmail.com';

preg_match('/@([^.]+)/', $str, $match);

echo $match[1]; // gmail

Breakdown of above:

• @ start search from the character @
• [^.]+ match 1 or more characters that are not the character .
• The ( ) is to capture that portion in a backreference which in this case would be the index 1
• So we access it through $match[1]

Answer 2

Simple as mentions above :

$input=hardiksondagar@gmail.com;
// now you want to fetch gmail from input user PHP's inbuilt function 
preg_match('/@([^.]+)/', $input, $output);
echo $output[1]; // it'll print "gmail"

• Documentation of function : preg_match()