Regular Expressions 101

\?the literal ? (63₁₀ / 77₈ / 3F₁₆)

Group 1(firstName|lastName|email|phone1|address)

1st AlternativefirstName

firstNamethe literal text firstName (case sensitive)

2nd AlternativelastName

lastNamethe literal text lastName (case sensitive)

3rd Alternativeemail

emailthe literal text email (case sensitive)

4th Alternativephone1

phone1the literal text phone1 (case sensitive)

5th Alternativeaddress

addressthe literal text address (case sensitive)

=the literal = (61₁₀ / 75₈ / 3D₁₆)

Group 2([^&]*(?:&[^&=]+(?=&|$))*)

Negated Character Class[^&]*

*matches any number of characters outside the set below:

&the literal & (38₁₀ / 46₈ / 26₁₆)

Non-Capturing Group(?:&[^&=]+(?=&|$))*

*repeats the group contents below any number of times:

&the literal & (38₁₀ / 46₈ / 26₁₆)

Negated Character Class[^&=]+

+matches at least one character outside the set below:

&the literal & (38₁₀ / 46₈ / 26₁₆)

=the literal = (61₁₀ / 75₈ / 3D₁₆)

Positive Lookahead(?=&|$)

1st Alternative&

&the literal & (38₁₀ / 46₈ / 26₁₆)

2nd Alternative$

$end of line

Non-Capturing Group(?:&|$)

1st Alternative&

&the literal & (38₁₀ / 46₈ / 26₁₆)

2nd 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

\?(firstName|lastName|email|phone1|address)=([^&]*(?:&[^&=]+(?=&|$))*)(?:&|$)

New

https://example.com?email=abc&xyz@.com&isAvailableReferral=true
https://example.com?email=abc@xyz.com&isAvailableReferral=true
https://example.com?email=abc&xyz@.com
https://example.com?email=abc@xyz.com

Extraction