Question

I have the following $_POST function to check if the fields of ‘start’, ‘middle’ and ‘end’ is empty or not.

if(!empty($_POST['start'])) {
   $description = "a sentence".$_POST['start']." with something in the START.";
}

if(!empty($_POST['middle'])) {
   $description = "a sentence".$_POST['middle']." with something in the MIDDLE.";
}

if(!empty($_POST['end'])) {
   $description .= "a sentence".$_POST['end']." with something in the END.";
}

I want to check the values in one function, in other words I want to check multiple values at the same time. I have seen few method but not sure which one is right, using comma or && or ||, something like below …

if(!empty($_POST['start']) , (!empty($_POST['middle']) , (!empty($_POST['end']))

or

if(!empty($_POST['start']) && (!empty($_POST['middle']) && (!empty($_POST['end']))

or

if(!empty($_POST['start']) || (!empty($_POST['middle']) || (!empty($_POST['end']))

Can anyone tell me the right code for this kind of formation?

Answer 1

here are some basic.. i made it as a comment(as i was not sure if this is the thing you asked for) but i guess an answer would be appropriate with a bit of details.

• the AND operatior

the && will check every condition and if all are true it will return true…

take it like this

if(FALSE && TRUE)

it will always return False and if will not execute because one of the condition is false

• The OR operator

THe || will check the first condition if its true it will return true else check the second condition If all are false(not even a single is true) it will return false.

again following the previous example

if(TRUE || False || False)

now the compiler checks the first condition if its true it will ignore the next two conditions and return true.

if(FALSE || FALSE || FALSE) – this will return false as all are false

• THe comma Operator

if you , operatior then the last condition to the right will be evaluated and if it is true then it will return true else false

example

if(True,True,True,False)  -  it will return false

if(FALSE, TRUE, FALSE, TRUE) - it will return true

so choose the operator according to your logic.

USE THIS :

if((!empty($_POST['start'])) && (!empty($_POST['start'])) && (!empty($_POST['start'])));