Regular Expressions 101

Community Patterns

Validate Base64 single-line string

8

Regular Expression
PCRE (PHP <7.3)

/
^(?:([a-z0-9A-Z+\/]){4})*(?1)(?:(?1)==|(?1){2}=|(?1){3})$
/
mg

Description

no description available

Submitted by ka. - 11 years ago