Isset php

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 post

if (!empty($_POST["mail"])) {
    echo "Yes, mail is set";    
} else {  
    echo "No, mail is not set";
}

Source: stackoverflow.com

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);

Similar codes

2 votes183 views1 answer
Return back in blade laravel
PHP
12 votes188 views2 answers
Timestamp false in laravel
PHP Laravel
1 vote220 views1 answer
Laravel use references in other tables
PHP Laravel
0 vote196 views1 answer
Laravel 8 blade get days and hours ago
PHP
0 vote196 views2 answers
Wordpress single post template
PHP
2 votes162 views1 answer
Is php still used
PHP
0 vote234 views2 answers
How do we calculate average in laravel 8
PHP Laravel
0 vote171 views1 answer
Guzzle download file
PHP
21 votes180 views2 answers
Php get second last element of array
PHP
0 vote206 views1 answer
Check current pages is a child page wordpress
PHP Wordpress