Regular Expressions 101

Character Class[&?]

&the literal & (38₁₀ / 46₈ / 26₁₆)

?the literal ? (63₁₀ / 77₈ / 3F₁₆)

languagethe literal text language (case sensitive)

.*?any character (except for line terminators), repeated any number of times

Positive Lookahead(?=&|\?|$)

1st Alternative&

&the literal & (38₁₀ / 46₈ / 26₁₆)

2nd Alternative\?

\?the literal ? (63₁₀ / 77₈ / 3F₁₆)

3rd Alternative$

$end of line

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

[&?]language.*?(?=&|\?|$)

New

/fr/welcome?param1=222&param2=aloa&language=en
/fr/welcome?language=en
/fr/welcome?param1=222&language=en&param2=aa