<s>
PHPUnit	B-Language
is	O
a	O
unit	O
testing	O
framework	B-Architecture
for	O
the	O
PHP	B-Application
programming	I-Application
language	I-Application
.	O
</s>
<s>
It	O
is	O
an	O
instance	O
of	O
the	O
xUnit	B-Library
architecture	O
for	O
unit	O
testing	O
frameworks	O
that	O
originated	O
with	O
SUnit	B-Library
and	O
became	O
popular	O
with	O
JUnit	B-Language
.	O
</s>
<s>
PHPUnit	B-Language
was	O
created	O
by	O
Sebastian	O
Bergmann	O
and	O
its	O
development	O
is	O
hosted	O
on	O
GitHub	B-Application
.	O
</s>
<s>
PHPUnit	B-Language
is	O
based	O
on	O
the	O
idea	O
that	O
developers	O
should	O
be	O
able	O
to	O
find	O
mistakes	O
in	O
their	O
newly	O
committed	O
code	O
quickly	O
and	O
assert	O
that	O
no	O
code	O
regression	O
has	O
occurred	O
in	O
other	O
parts	O
of	O
the	O
code	O
base	O
.	O
</s>
<s>
Much	O
like	O
other	O
unit	O
testing	O
frameworks	O
,	O
PHPUnit	B-Language
uses	O
assertions	O
to	O
verify	O
that	O
the	O
behavior	O
of	O
the	O
specific	O
component	O
-	O
or	O
"	O
unit	O
"	O
-	O
being	O
tested	O
behaves	O
as	O
expected	O
.	O
</s>
<s>
PHPUnit	B-Language
can	O
output	O
test	O
results	O
in	O
a	O
number	O
of	O
different	O
formats	O
,	O
including	O
JUnit	B-Language
XML	O
and	O
TestDox	B-Protocol
.	O
</s>
<s>
A	O
vulnerability	O
that	O
allowed	O
attackers	O
to	O
execute	O
remote	O
code	O
via	O
PHPUnit	B-Language
was	O
discovered	O
in	O
late	O
2017	O
.	O
</s>
<s>
By	O
sending	O
a	O
payload	O
of	O
PHP	B-Application
code	O
to	O
a	O
file	O
that	O
is	O
part	O
of	O
PHPUnit	B-Language
,	O
an	O
attacker	O
could	O
execute	O
PHP	B-Application
code	O
on	O
the	O
webserver	O
.	O
</s>
