Unknown Syntax

[Chris Morrow]

Does anybody recognize this:

!==

with 2 '='

Ive known != to mean not equal to but i'm just looking at someone elses
script and they use this instead. Does anyone know if this works or any
problems with it?

Cheers

[Erythros]

two equal signs means 'equal to'
so '!==' means 'not equal to'
one equal sign sets a value.
ie...
x = 2; // x is set to the value of 2

if(x!==3) // checks if the value of x is not equal to 3

as for != i've never seen it with just one equal sign...


"Chris Morrow" <chris.morrow@btopenworld.com> wrote in message
news:20030711125539.71628.qmail@pb1.pair.com...

> Does anybody recognize this:
>
> !==
>
> with 2 '='
>
> Ive known != to mean not equal to but i'm just looking at someone elses
> script and they use this instead. Does anyone know if this works or any
> problems with it?
>
> Cheers
>
>

[Chris Morrow]

I Found this on the PHP.net site, maybe it will clear things up. Thanks for
your help everyone.

Example Name Result
$a == $b Equal TRUE if $a is equal to $b.
$a === $b Identical TRUE if $a is equal to $b, and they are of the
same type. (PHP 4 only)
$a != $b Not equal TRUE if $a is not equal to $b.
$a <> $b Not equal TRUE if $a is not equal to $b.
$a !== $b Not identical TRUE if $a is not equal to $b, or they are not
of the same type. (PHP 4 only)
$a < $b Less than TRUE if $a is strictly less than $b.
$a > $b Greater than TRUE if $a is strictly greater than $b.
$a <= $b Less than or equal to TRUE if $a is less than or equal to
$b.
$a >= $b Greater than or equal to TRUE if $a is greater than or equal
to $b.


Cheers,
Chris


"Erythros" <erythros@erythros.com> wrote in message
news:20030711131515.92921.qmail@pb1.pair.com...

> two equal signs means 'equal to'
> so '!==' means 'not equal to'
> one equal sign sets a value.
> ie...
> x = 2; // x is set to the value of 2
>
> if(x!==3) // checks if the value of x is not equal to 3
>
> as for != i've never seen it with just one equal sign...
>
>
> "Chris Morrow" <chris.morrow@btopenworld.com> wrote in message
> news:20030711125539.71628.qmail@pb1.pair.com...

> > Does anybody recognize this:
> >
> > !==
> >
> > with 2 '='
> >
> > Ive known != to mean not equal to but i'm just looking at someone elses
> > script and they use this instead. Does anyone know if this works or any
> > problems with it?
> >
> > Cheers
> >
> >

>
>