Online PHP editor | rfc for cCL24

@ 2015-08-25T22:50:44Z

<?php
class Foo {
    function Foo($name) {
        // create a reference inside the global array $globalref
        global $globalref;//<--- variável global WTF que tenta exemplicar a diferença
        //do new e do &=
        $globalref[] = &$this;
        // set name to passed value
        $this->setName($name);
        // and put it out
        $this->echoName();
    }

    function echoName() {
        echo "<br />", $this->name;
    }

    function setName($name) {
        $this->name = $name;
    }
}


// now we will change the name. what do you expect?
// you could expect that both $bar1 and $globalref[0] change their names...
$bar1->setName('set from outside');

// as mentioned before this is not the case.
$bar1->echoName();
$globalref[0]->echoName();

/* output:
set from outside
set in constructor */

// let us see what is different with $bar2 and $globalref[1]
$bar2->setName('set from outside');

// luckily they are not only equal, they are the same variable
// thus $bar2->name and $globalref[1]->name are the same too
$bar2->echoName();
$globalref[1]->echoName();

?>

Output for git.master, git.master_jit, rfc.property-hooks: Warning: Undefined variable $bar1 in /in/cCL24 on line 26 Fatal error: Uncaught Error: Call to a member function setName() on null in /in/cCL24:26 Stack trace: #0 {main} thrown in /in/cCL24 on line 26
Process exited with code 255.

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