Regular Expressions 101

Community Patterns

Community Library Entry

1

Regular Expression
PCRE (PHP <7.3)

/
(?:^\s*[-+*^]|[-+*^]\s*[-+*^]|[xX]\s*[xX]|[-+*^]\s*$)
/
g

Description

easy syntax check for equation

Submitted by Kerosene2000 - 9 years ago