How can i check if associate array element is empty or not?

[colap]

    Array
    (
        [Comment] => Array
            (
                [post_id] => 1
                [name] => cc
                [email] =>
                [body] => spam
            )     
    )

 

How can i check if email is empty or not? Is there any php built in function? Should i use foreach?

[mr.noname]

use this

 

if( empty($str['comment']['email']) )
{
   // do something if empty value
}
else
{
   // if not empty
}

 

 

[colap]

use this

 

if( empty($str['comment']['email']) )
{
   // do something if empty value
}
else
{
   // if not empty
}

What about isset and is_null function?

[mr.noname]

let's check this for example

 

if the variable assign to this value

 

0 ----> number 0
"0"   ----> string 0
"" ----> empty string
"  "  ----> string with whitespace
0.0 ----> double value
array()  ----> empty array
NULL   ----> null value
FALSE -----> boolean false

 

if use

empty() ----> will return TRUE

is_null() ---> return TRUE on NULL value

isset() --->  all above are TRUE except FALSE and NULL value

 

 

[mr.noname]

sorry for this is the example

[/td]

[td]empty()

isset()

is_null()

0

TRUE

TRUE

FALSE

0.0

TRUE

TRUE

FALSE

"0"

TRUE

TRUE

FALSE

""

TRUE

TRUE

FALSE

"  "

FALSE

TRUE

FALSE

NULL

TRUE

FALSE

TRUE

FALSE

TRUE

TRUE

FALSE

array()

TRUE

TRUE

FALSE