Regular Expressions 101

&the literal & (38₁₀ / 46₈ / 26₁₆)

Negative Lookahead(?!(?:apos|quot|[gl]t|amp);|#)

1st Alternative(?:apos|quot|[gl]t|amp);

Non-Capturing Group(?:apos|quot|[gl]t|amp)

1st Alternativeapos

aposthe literal text apos (case sensitive)

2nd Alternativequot

quotthe literal text quot (case sensitive)

3rd Alternative[gl]t

Character Class[gl]

gthe literal g (103₁₀ / 147₈ / 67₁₆) (case sensitive)

lthe literal l (108₁₀ / 154₈ / 6C₁₆) (case sensitive)

tthe literal t (116₁₀ / 164₈ / 74₁₆) (case sensitive)

4th Alternativeamp

ampthe literal text amp (case sensitive)

;the literal ; (59₁₀ / 73₈ / 3B₁₆)

2nd Alternative#

#the literal # (35₁₀ / 43₈ / 23₁₆)

Global pattern flags

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

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

&(?!(?:apos|quot|[gl]t|amp);|#)

New

<field>&amp; is escaped</field>
<field>&quot;also escaped&quot;</field>
<field>is & "not" escaped</field>
<field>is &quot; and is not & escaped</field>

Regular Expression

Extraction