if/else shorthand to define a variable

Question

I have troubles understanding how the php shorthands for if/else described here works.

<?=(expression) ? $foo : $bar?>

The expression I'm trying to shorten is the following :

if (isset($result[1][0])) { $var = $result[1][0]; } else { $var = ""; }

Can somebody explain me how I can apply the shorthand if/else statement in my situation ?

Thank you !

Saumya Rastogi · Accepted Answer · 2016-12-12 16:06:21Z

11

You can use ternary operator like this:

$var = (isset($result[1][0])) ? $result[1][0] : "";

See more about Ternary Operator

In case of PHP 7, you can do it like this:

$var = $result[1][0] ?? ''

Hope this helps!

edited Dec 12, 2016 at 16:06

answered Dec 12, 2016 at 16:01

Saumya Rastogi

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6 Comments

Dilettant Over a year ago

Maybe add a closing parenthesis ?

colburton Over a year ago

PHP 7 can even make it shorter: $var = $result[1][0] ?? "";

QiMath Over a year ago

Thank you for all theses quick answers, I wasn't even close... Unfortunately I'm not running PHP 7 at the moment so I'll go with this :) Thanks !

Don't Panic Over a year ago

The parentheses around the isset expression aren't really necessary. It doesn't hurt to have them, but you don't need them.

Saumya Rastogi Over a year ago

@Don'tPanic - Yes the parenthesis isn't necessary but the code seems clean and understandable by using that parenthesis. So I prefer to use that parenthesis!

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deChristo · Accepted Answer · 2016-12-12 16:02:12Z

It's simple. Think of it as:

Condition ? Executes if condition is true : otherwise

In your case:

$var = isset($result[1][0]) ? $result[1][0] : "";

condition: isset($result[1][0])

if true: return $result[1][0]

else: return ""

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