Need help echoing out rand array's

[eldan88]

Hi,

 

 

I have a website which I would like to echo out random cool facts everytime a page loads. How can I use the random array to to this... this is what i have done below so far

 

$facts = array ("One out of 20 people have an extra rib ", "44% of kids watch television before they go to sleep" );

 

Thanks

[xyph]

<?php

$facts = array ("One out of 20 people have an extra rib ", "44% of kids watch television before they go to sleep" );

// method 1
$size = count($facts)-1;
$rand = rand(0,$size);
echo $facts[$rand];

// method 2
shuffle($facts);
echo $facts[0];

?>

[eldan88]

<?php

$facts = array ("One out of 20 people have an extra rib ", "44% of kids watch television before they go to sleep" );

// method 1
$size = count($facts)-1;
$rand = rand(0,$size);
echo $facts[$rand];

// method 2
shuffle($facts);
echo $facts[0];

?>

 

Method 2 worked thank you so much!

 

I have a question though.. just out of curiosity, why is there a "-1" for $size = count($facts)-1;

 

Thanks

[xyph]

Because array indexes start at 0...

 

So if your array had 10 entries, their keys would range from 0 to 9.

 

Does that help?

[Barand]

<?php

$facts = array ("One out of 20 people have an extra rib ", "44% of kids watch television before they go to sleep" );

// method 1
$size = count($facts)-1;
$rand = rand(0,$size);
echo $facts[$rand];

// method 2
shuffle($facts);
echo $facts[0];

?>

 

// method 3

echo $facts[array_rand($facts)];

 

[xyph]

Show off.

 

 

 

... knew I missed an easy one.

[eldan88]

I Get it! Because you where using the count function! Thank you so much!!!!

 

<?php

$facts = array ("One out of 20 people have an extra rib ", "44% of kids watch television before they go to sleep" );

// method 1
$size = count($facts)-1;
$rand = rand(0,$size);
echo $facts[$rand];

// method 2
shuffle($facts);
echo $facts[0];

?>

 

Method 2 worked thank you so much!

 

I have a question though.. just out of curiosity, why is there a "-1" for $size = count($facts)-1;

 

Thanks