Online PHP editor | rfc for hMA5o

@ 2013-10-25T12:37:09Z

<?php

function distance($vect1, $vect2) 
{
    if (!is_array($vect1) || !is_array($vect2)) {

        return NULL;
    }

    if (count($vect1) != count($vect2)) {

        return NULL;
    }

    for ($i=0; $i<count($vect1); $i++) {
        $c1 = $vect1[$i]; $c2 = $vect2[$i];
        $d = 0.0;
        if (!is_numeric($c1)) {
            trigger_error("Coordinate $i in vector 1 is not a number, using zero", 
                            E_USER_WARNING);
            $c1 = 0.0;
        }
        if (!is_numeric($c2)) {
            trigger_error("Coordinate $i in vector 2 is not a number, using zero", 
                            E_USER_WARNING);
            $c2 = 0.0;
        }
        $d += $c2*$c2 - $c1*$c1;
        return $d;
        echo sqrt($d);
    }
   return $d; 
}



// variabile non definita, genera un warning
$t = I_AM_NOT_DEFINED;

// definisce dei vettori
$a = array(2, 3, "foo");
$b = array(5.5, 4.3);
$c = array(1, 3);

// genera un errore utente
distance($c, $b) . "\n";

// un'altro errore utente
distance($b, "i am not an array") . "\n";

// genera un warning
 distance($a, $b) . "\n";

?>

Output for git.master, git.master_jit, rfc.property-hooks: Fatal error: Uncaught Error: Undefined constant "I_AM_NOT_DEFINED" in /in/hMA5o:38 Stack trace: #0 {main} thrown in /in/hMA5o on line 38
Process exited with code 255.

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2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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