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Perl matching operator
  • Last Updated : 07 May, 2019

m operator in Perl is used to match a pattern within the given text. The string passed to m operator can be enclosed within any character which will be used as a delimiter to regular expressions.
To print this matched pattern and the remaining string, m operator provides various operators which include $, which contains whatever the last grouping match matched.
$& – contains the entire matched string
$` – contains everything before the matched string
$’ – contains everything after the matched string

Syntax: m/String/

Return:
0 on failure and 1 on success

Example 1:




#!/usr/bin/perl -w
  
# Text String
$string = "Geeks for geeks is the best";
  
# Let us use m operator to search 
# "or g"
$string =~ m/or g/;
  
# Printing the String
print "Before: $`\n";
print "Matched: $&\n";
print "After: $'\n";


Output:

Before: Geeks f
Matched: or g
After: eeks is the best

Example 2:




#!/usr/bin/perl -w
  
# Text String
$string = "Welcome to GeeksForGeeks";
  
# Let us use m operator to search 
# "to Ge"
$string =~ m/to Ge/;
  
# Printing the String
print "Before: $`\n";
print "Matched: $&\n";
print "After: $'\n";


Output:

Before: Welcome 
Matched: to Ge
After: eksForGeeks
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