Cannot concatinate a variable to a protected variable?

PHP
1

Hi

why does the following syntax generate an error:

<?php
class Foo
{
    protected $my_static = $var .  'foo';
}

Parse error: syntax error, unexpected T_VARIABLE in /var/www/test.php on line 4

2

Hello,

you can’t declare attributes of a class in that way. You can assign values to attributes of class using constructor:

class Foo
{
    protected $my_static;

    public function __construct($my_static){
    	$this->my_static = $my_static;
    }

    public function get_my_static(){
    	return $this->my_static;
    }
}

$var = 10;
$foo = new Foo($var);
echo $foo->get_my_static();

You can assign value to attributes in this way as well:

class Foo
{
    protected $my_static = 10;
    protected $my_static = 'some string';
}

If you try to use any “operation” like . or if you try to assing value to the attribute by calling a function etc., then you will always run into PHP Error.


function test(){return 10;};

class Foo
{
    protected $my_static = test();
    protected $my_static = 'abc'.'def';
}
3

Thank u so much sir…that really helped!!!