What is the PHP shorthand for: print var if var exist -

we've encountered before, needing print variable in input field not knowing sure whether var set, this. avoid e_warning.

<input value='<?php if(isset($var)){print($var);}; ?>'>

how can write shorter? i'm okay introducing new function this:

<input value='<?php printvar('myvar'); ?>'>

but don't succeed in writing printvar() function.

my recommendation create issetor function:

function issetor(&$var, $default = false) {     return isset($var) ? $var : $default; }

this takes variable argument , returns it, if exists, or default value, if doesn't. can do:

echo issetor($myvar);

but use in other cases:

$user = issetor($_get['user'], 'guest');

$user = $_get['user'] ?? 'guest';

or in usage:

<?= $myvar ?? '' ?>

Kiastu