How to check if array is empty?

[sayedsohail]

Hi everyone,

 

I am using an array named $outdata, and just wish to know how to check if the array is empty.

 

I am using this method  if(empty($outdata)); i am not sure this is the right way to check if array is empty.

 

 

Here is the code

 

$outdata=array();
$outdata[]="Hello";
$outdata[]="Welcome";

if(empty($outdata)); 
{
$outdata[]="You are not authorized";
}
else
{
do something...
}

[mrjcfreak]

According to the manual; empty() will return true if the array has no items.

 

(count($array) == 0) ? is probably the least confusing way of doing things

[sayedsohail]

Do u mean i should try something like this

 

function isEmpty($array)

{

return (count(array_filter($array)) == 0) ? 1 : 0;

}

 

 

$may_not_empty = isEmpty($outdata);

 

if($may_not_empty == 1)

{

do something

}

else

{

do something else

}

[mrjcfreak]

Nope!

 

use:

 

if(count($array) == 0) {

//The array is empty, it either doesn't exist or has no elements in it

} else {

The array exists and has things in it

}

 

 

or:

 

if(isset($array)) {

//The array exists, but might be empty

} else {

//The array does not exist at all, it was either never defined or unset/deleted

}

 

Depending on what exactly you want it to do. Choosing between them is what makes coding slightly more than following a recipe book.