How to check multiple variables if has values?

Question

How can i check if all has values do something if one is missing echo something with else. I try with isset but same, i miss something i think.

$da1="da1";
$ba2="";
$za3="za3";

if (!empty($da1)||!empty($ba2)||!empty($za3)) {
    echo $da1.$ba2.$za3;
}else{
    echo "one is missing";
}

My output is this :

da1za3

!empty($da1) is true, no other checks are done. you need to rethink your logic — Roland Starke
– Roland Starke, Commented Aug 20, 2017 at 8:05
You should be careful when using empty() and make sure that you know what it actually evaluates as empty. php.net/manual/en/function.empty.php — M. Eriksson
– M. Eriksson, Commented Aug 20, 2017 at 8:10

Dhruvil Patel · Accepted Answer · 2017-08-20 08:06:56Z

5

USE && instead ||

if (!empty($da1)  && !empty($ba2)  && !empty($za3)) {
    echo $da1.$ba2.$za3;
}else{
    echo "one is mising";
}

answered Aug 20, 2017 at 8:06

Dhruvil Patel

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9 Comments

Dhruvil Patel Over a year ago

isset only checks variable is set or not, it will not check its value (weather empty or not). Thanks

Adrian Klark Over a year ago

so what does exactly || ?

Lawrence Cherone Over a year ago

@AdrianKlark Thank you, some answers are stupid here they don't read the question. wont go down well, people are trying to help you. also || means or but hey we are all stupid!! If you took the time to read the manual you would know.

Dhruvil Patel Over a year ago

|| checks weather one of condition is true, then it returns true. In your case, $da1 is not empty, so it will not throwing error.

M. Eriksson Over a year ago

@DhruvilPatel isset() does check if it is null as well.

|

aidinMC · Accepted Answer · 2017-08-20 08:06:24Z

2

you can check with isset function

if(isset($da1,$da2,$da3))
    echo 'all ok';

answered Aug 20, 2017 at 8:06

aidinMC

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1 Comment

JohnDotOwl Over a year ago

Looks good, didn't know comma existed for this function

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