<s>
Symfony	B-Language
is	O
a	O
free	B-License
and	I-License
open-source	I-License
PHP	B-Application
web	B-Application
application	I-Application
framework	I-Application
and	O
a	O
set	O
of	O
reusable	O
PHP	B-Application
component	O
libraries	O
.	O
</s>
<s>
It	O
was	O
published	O
as	O
free	B-Application
software	I-Application
on	O
October	O
18	O
,	O
2005	O
,	O
and	O
released	O
under	O
the	B-License
MIT	I-License
license	I-License
.	O
</s>
<s>
Symfony	B-Language
aims	O
to	O
speed	O
up	O
the	O
creation	O
and	O
maintenance	O
of	O
web	O
applications	O
and	O
to	O
replace	O
repetitive	O
coding	O
tasks	O
.	O
</s>
<s>
To	O
match	O
enterprise	O
development	O
guidelines	O
,	O
Symfony	B-Language
is	O
bundled	O
with	O
additional	O
tools	O
to	O
help	O
developers	O
test	O
,	O
debug	O
and	O
document	O
projects	O
.	O
</s>
<s>
Symfony	B-Language
has	O
a	O
low	O
performance	O
overhead	O
used	O
with	O
a	O
bytecode	O
cache	O
.	O
</s>
<s>
Symfony	B-Language
was	O
heavily	O
inspired	O
by	O
the	B-Application
Spring	I-Application
Framework	I-Application
.	O
</s>
<s>
It	O
makes	O
heavy	O
use	O
of	O
existing	O
PHP	B-Application
open-source	B-Application
projects	O
as	O
part	O
of	O
the	O
framework	B-Architecture
,	O
including	O
:	O
</s>
<s>
Symfony	B-Language
also	O
makes	O
use	O
of	O
its	O
own	O
components	O
,	O
which	O
are	O
freely	O
available	O
on	O
the	O
Symfony	B-Language
Components	O
site	O
for	O
various	O
other	O
projects	O
:	O
</s>
<s>
Symfony	B-Language
is	O
sponsored	O
by	O
SensioLabs	O
,	O
a	O
French	O
software	O
developer	O
and	O
professional	O
services	O
provider	O
.	O
</s>
<s>
The	O
first	O
name	O
was	O
Sensio	O
Framework	B-Architecture
,	O
and	O
all	O
classes	O
were	O
therefore	O
prefixed	O
with	O
sf	O
.	O
</s>
<s>
Later	O
on	O
when	O
it	O
was	O
decided	O
to	O
launch	O
it	O
as	O
open-source	B-Application
framework	B-Architecture
,	O
the	O
brainstorming	O
resulted	O
in	O
the	O
name	O
symfony	B-Language
(	O
being	O
renamed	O
to	O
Symfony	B-Language
from	O
version	O
2	O
and	O
on	O
)	O
,	O
which	O
matches	O
the	O
existing	O
theme	O
and	O
class	O
name	O
prefixes	O
.	O
</s>
<s>
Symfony	B-Language
is	O
used	O
by	O
the	O
open-source	B-Application
Q&A	O
service	O
Askeet	O
and	O
many	O
more	O
applications	O
,	O
including	O
Delicious	B-Application
website	O
.	O
</s>
<s>
As	O
of	O
February	O
2009	O
,	O
Dailymotion.com	B-General_Concept
has	O
ported	O
part	O
of	O
its	O
code	O
to	O
use	O
Symfony	B-Language
,	O
and	O
is	O
continuing	O
the	O
transition	O
.	O
</s>
<s>
Symfony	B-Language
is	O
used	O
by	O
OpenSky	O
,	O
a	O
social	O
shopping	O
platform	O
,	O
and	O
the	O
Symfony	B-Language
framework	I-Language
is	O
also	O
used	O
by	O
the	O
massively	O
multiplayer	O
online	O
browser	O
game	O
eRepublik	B-Application
,	O
and	O
by	O
the	O
content	O
management	O
framework	B-Architecture
eZ	B-Application
Publish	I-Application
in	O
version	O
5	O
.	O
</s>
<s>
Drupal	B-Application
8	O
,	O
phpBB	B-Application
and	O
a	O
number	O
of	O
other	O
large	O
applications	O
have	O
incorporated	O
components	O
of	O
Symfony	B-Language
.	O
</s>
<s>
Symfony	B-Language
is	O
also	O
used	O
by	O
Meetic	O
,	O
one	O
of	O
the	O
largest	O
online	O
dating	O
platforms	O
in	O
the	O
world	O
,	O
on	O
most	O
of	O
its	O
websites	O
for	O
implementing	O
its	O
business	O
logic	O
in	O
the	O
backend	O
.	O
</s>
<s>
Symfony	B-Language
components	O
are	O
also	O
used	O
in	O
other	O
web	B-Application
application	I-Application
frameworks	I-Application
including	O
Laravel	B-Language
,	O
which	O
is	O
another	O
full-stack	B-Application
framework	I-Application
,	O
and	O
Silex	B-Language
,	O
which	O
is	O
a	O
microframework	O
.	O
</s>
<s>
Symfony	B-Language
's	O
own	O
website	O
has	O
a	O
comprehensive	O
list	O
of	O
projects	O
using	O
Symfony	B-Language
and	O
a	O
showcase	O
of	O
websites	O
built	O
with	O
Symfony	B-Language
.	O
</s>
<s>
Symfony	B-Language
manages	O
its	O
releases	O
through	O
a	O
time-based	O
model	O
;	O
a	O
new	O
Symfony	B-Language
release	O
comes	O
out	O
every	O
six	O
months	O
:	O
one	O
in	O
May	O
and	O
one	O
in	O
November	O
.	O
</s>
<s>
This	O
release	O
process	O
has	O
been	O
adopted	O
as	O
of	O
Symfony	B-Language
2.2	O
,	O
and	O
all	O
the	O
"	O
rules	O
"	O
explained	O
in	O
this	O
document	O
must	O
be	O
strictly	O
followed	O
as	O
of	O
Symfony	B-Language
2.4	O
.	O
</s>
<s>
The	O
standard	O
version	O
of	O
Symfony	B-Language
is	O
maintained	O
for	O
eight	O
months	O
,	O
whereas	O
long-term	O
support	O
(	O
LTS	O
)	O
versions	O
are	O
supported	O
for	O
three	O
years	O
.	O
</s>
<s>
Version	O
Release	O
date	O
Support	O
PHP	B-Application
version	O
End	O
of	O
maintenance	O
Notes	O
1.0	O
January	O
2007	O
Three	O
years	O
≥	O
5.0	O
January	O
2010	O
1.1	O
June	O
2008	O
One	O
year	O
≥	O
5.1	O
June	O
2009	O
Security-related	O
patches	O
were	O
applied	O
until	O
June	O
2010	O
1.2	O
December	O
2008	O
One	O
year	O
≥	O
5.2	O
November	O
2009	O
1.3	O
November	O
2009	O
One	O
year	O
≥	O
5.2.4	O
November	O
2010	O
1.4	O
November	O
2009	O
Three	O
years	O
≥	O
5.2.4	O
November	O
2012	O
LTS	O
version	O
.	O
</s>
<s>
1.4	O
is	O
identical	O
to	O
1.3	O
,	O
but	O
it	O
does	O
not	O
support	O
the	O
1.3	O
deprecated	O
features.Symfony	O
Blog	O
-	O
About	O
symfony	B-Language
1.3	O
and	O
1.4	O
2.0Symfony	O
blog	O
-	O
Why	O
will	O
Symfony	B-Language
2.0	O
finally	O
use	O
PHP	B-Application
5.3	O
?	O
</s>
<s>
July	O
2011Symfony	O
blog	O
-	O
Symfony2	B-Language
release	O
≥	O
5.3.2	O
March	O
2013	O
Last	O
2.0.x	O
release	O
was	O
Symfony	B-Language
2.0.252.0.23	O
released	O
.	O
</s>
<s>
Symfony	B-Language
(	O
2013-03-20	O
)	O
.	O
</s>
<s>
2.1Symfony	O
2.1.0	O
released	O
September	O
2012	O
Eight	O
months	O
≥	O
5.3.3	O
June	O
2013	O
More	O
components	O
are	O
part	O
of	O
the	O
stable	O
API	B-Application
.	O
</s>
<s>
Symfony	B-Language
(	O
2013-03-01	O
)	O
.	O
</s>
<s>
Symfony	B-Language
(	O
2013-06-03	O
)	O
.	O
</s>
<s>
Symfony	B-Language
(	O
2013-12-03	O
)	O
.	O
</s>
<s>
4.0	O
November	O
2017	O
Eight	O
months	O
≥	O
7.1.3Bump	O
minimum	O
version	O
to	O
PHP	B-Application
7.1	O
for	O
Symfony	B-Language
4	O
July	O
2018	O
Dropping	O
support	O
for	O
HHVMSymfony	O
4	O
:	O
End	O
of	O
HHVM	O
support	O
4.1	O
May	O
2018	O
Eight	O
months	O
≥	O
7.1.3	O
January	O
2019	O
4.2	O
November	O
2018	O
Eight	O
months	O
≥	O
7.1.3	O
July	O
2019	O
4.3	O
May	O
2019	O
Eight	O
months	O
≥	O
7.1.3	O
January	O
2020	O
4.4	O
November	O
2019	O
Three	O
years	O
≥	O
7.1.3	O
November	O
2022	O
LTS	O
release	O
.	O
</s>
