General question about if statements that's too difficult to describe in subject

[matthewhaworth]

Okay, look at the following code:

 

#1

<?php
if ( $link = mysql_connect($host, $user, $pass) )
{
    echo "The connection was successful";
}

 

#2

<?php
$link = mysql_connect($host, $user, $pass);
if ( $link = FALSE)
{
    echo "The connection was successful";
}

 

Which one should I use? When assigning variables within if statements does it return TRUE is the assignment was successful or does it return TRUE is the content of the variables is TRUE?

[redarrow]

they both work but ill sugest example 2.......

[awpti]

Uh..

 

<?php
$link = mysql_connect($host, $user, $pass);

if($link === FALSE):
    // Connection failed.
endif;

 

Your second example is checking if the assignment of FALSE to $link worked

[matthewhaworth]

Of course! I'm half asleep, in the second example I did mean to use the comparison operator, not the assignment operator.. which makes a mokery of my whole question really.. but any more answers will be appreciated as I still don't feel satisfied.

 

Thanks so far.

[natbob]

I would use #1 just because it uses less code.

I ran a speed test and #2 takes 1.5 times as long (with the === operator of course )

so from  a performance perspective, 1 is faster.