<s>
eAccelerator	B-Language
is	O
a	O
PHP	B-Language
accelerator	I-Language
derived	B-Application
from	O
the	O
MMCache	B-Protocol
extension	B-Application
for	O
the	O
PHP	B-Application
programming	I-Application
language	I-Application
.	O
</s>
<s>
eAccelerator	B-Language
provides	O
a	O
bytecode	O
cache	B-General_Concept
.	O
</s>
<s>
eAccelerator	B-Language
is	O
open	O
source	O
and	O
thereby	O
free	O
to	O
use	O
and	O
distribute	O
.	O
</s>
<s>
Every	O
time	O
a	O
PHP	B-Application
script	I-Application
is	O
accessed	O
,	O
PHP	B-Application
usually	O
parses	O
and	O
compiles	O
scripts	O
to	O
bytecode	O
.	O
</s>
<s>
Once	O
installed	O
,	O
eAccelerator	B-Language
optimizes	O
the	O
compiled	O
bytecode	O
and	O
caches	B-General_Concept
this	O
to	O
shared	B-Operating_System
memory	I-Operating_System
or	O
disk	O
or	O
both	O
.	O
</s>
<s>
Upon	O
subsequent	O
accesses	O
to	O
a	O
script	O
,	O
eAccelerator	B-Language
will	O
access	O
cached	O
bytecode	O
if	O
it	O
is	O
available	O
instead	O
of	O
the	O
script	O
being	O
compiled	O
.	O
</s>
<s>
Previous	O
eAccelerator	B-Language
versions	O
also	O
provided	O
functions	O
for	O
use	O
in	O
PHP	B-Application
scripts	I-Application
that	O
allow	O
access	O
to	O
shared	B-Operating_System
memory	I-Operating_System
,	O
automatic	O
web	O
(	O
content	O
)	O
caching	B-General_Concept
,	O
and	O
other	O
related	O
tasks	O
.	O
</s>
<s>
Old	O
eAccelerator	B-Language
versions	O
had	O
an	O
encoder	O
component	O
that	O
creates	O
a	O
file	O
that	O
cannot	O
be	O
as	O
easily	O
read	O
as	O
a	O
normal	O
PHP	B-Application
script	I-Application
,	O
offering	O
some	O
code	O
protection	O
.	O
</s>
<s>
A	O
dedicated	O
extension	B-Application
named	O
eLoader	O
is	O
available	O
to	O
process	O
such	O
encoded	O
scripts	O
if	O
the	O
eAccelerator	B-Language
extension	B-Application
is	O
not	O
desired	O
.	O
</s>
<s>
The	O
latest	O
supported	O
PHP	B-Application
version	O
was	O
5.3	O
,	O
which	O
had	O
its	O
end-of-life	O
in	O
2014	O
.	O
</s>
<s>
eAccelerator	B-Language
is	O
free	B-Application
software	I-Application
released	O
under	O
the	O
GNU	B-License
GPL	I-License
2.0	O
.	O
</s>
