perl regex syntax
perl regex syntax
To use regular expressions in Perl, the syntax involves using the =~
operator to match a regular expression against a string. Here's a basic example:
if ($string =~ /pattern/) {
# Do something if the pattern is found in the string
}
In this example, /pattern/
is the regular expression pattern. Perl also provides various modifiers that can be appended to the end of the regular expression to change its behavior, such as i
for case-insensitive matching and g
for global matching.
Additionally, you can use the m//
operator for more complex matching operations:
if ($string =~ m{pattern}i) {
# Do something if the case-insensitive pattern is found in the string
}
These are just a few basic examples of the Perl regex syntax. Perl's regular expression support is powerful and flexible, allowing for complex pattern matching and substitution operations.