Php isset

Php shorthand if isset

$var = $var ?? "default";

Source: stackoverflow.com

If exist php

if (isset($var)) {
  // Code here
}

Php see if undefined

if (isset($variable)) { /* do something */ };

Php isset

<?php

$var = '';

// This will evaluate to TRUE so the text will be printed.
if (isset($var)) {
    echo "This var is set so I will print.";
}

// In the next examples we'll use var_dump to output
// the return value of isset().

$a = "test";
$b = "anothertest";

var_dump(isset($a));      // TRUE
var_dump(isset($a, $b)); // TRUE

unset ($a);

var_dump(isset($a));     // FALSE
var_dump(isset($a, $b)); // FALSE

$foo = NULL;
var_dump(isset($foo));   // FALSE

?>

Source: php.net

Isset php

$variable=isset($otravariable);

Php isset

if (isset($val)) {
}

Similar codes

0 vote240 views1 answer
Plesk web config file laravel
PHP Laravel
0 vote234 views1 answer
Sass download for windows
PHP
0 vote246 views1 answer
Eager loading in hasmany belongsto relationship
PHP
0 vote215 views1 answer
Agregar clases de rol al body en WordPress
PHP Wordpress
34 votes241 views6 answers
Php random integer
PHP
0 vote197 views1 answer
Drupal 8 user_load
PHP
12 votes209 views3 answers
Php read csv file line by line
PHP
7 votes211 views6 answers
Laravel url
PHP Laravel
1 vote191 views1 answer
What does $ sign mean in php
PHP
5 votes229 views2 answers
Laravel chmod
PHP Laravel