Regular Expressions 101

Community Patterns

Complex numbers supporting scientific notation and extensive error-checking

0

Regular Expression
PCRE (PHP <7.3)

/
^(([+-]?(?:\d*(?:\.(?=\d))?\d+))(?:(?:(?:(?<=\d)[Ee])?((?2)))(?<=\d))?)(?:(?<=\d)[, ](?=\d|[+-]|\.)((?1))[iIjJ])?$
/
g

Description

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Submitted by anonymous - 6 years ago