Viewing file:  functioncalls_compiled.php (1.84 KB) -rw-rw-r--
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<?php
/*
* Test of function calls
*
* We define two functions fun and fun_r, both of which take a single argument
* $x; but fun_r is compile-time-by-reference and fun is not.
*
* Tests are designed to check copy-on-write etc. stuff
*/
function fun($x) { $x = 'x'; }
function fun_r(&$x) { $x = 'x'; }
// Test proper calling conventions in simple cases
$a = 10;
fun($a);
var_export($a);
$b = 20;
fun(&$b);
var_export($b);
$c = 30;
fun_r($c);
var_export($c);
$d = 40;
fun_r(&$d);
var_export($d);
echo "\n";
// Same as before, but the variable now passed in is part of a
// copy-on-write set. In all cases where a pass-by-reference is involved,
// only one of the two variables should be changed.
$e = 50;
$f = $e;
fun($f);
var_export($e);
var_export($f);
$f = 'y';
var_export($e);
var_export($f);
$g = 60;
$h = $g;
fun(&$h);
var_export($g);
var_export($h);
$h = 'y';
var_export($g);
var_export($h);
$i = 70;
$j = $i;
fun_r($j);
var_export($i);
var_export($j);
$j = 'y';
var_export($i);
var_export($j);
$k = 80;
$l = $k;
fun_r(&$l);
var_export($k);
var_export($l);
$l = 'y';
var_export($k);
var_export($l);
echo "\n";
// Same again, but the variable passed in is now part of a
// change-on-write set (references another variable).
// In this section, in all cases where a pass-by-reference is involved,
// both variables should be changed.
$m = 90;
$n =& $m;
fun($n);
var_export($m);
var_export($n);
$m = 'y';
var_export($m);
var_export($n);
$o = 100;
$p =& $o;
fun(&$p);
var_export($o);
var_export($p);
$p = 'y';
var_export($o);
var_export($p);
$q = 110;
$r =& $q;
fun_r($r);
var_export($q);
var_export($r);
$r = 'y';
var_export($q);
var_export($r);
$s = 120;
$t =& $s;
fun_r(&$t);
var_export($s);
var_export($t);
$t = 'y';
var_export($s);
var_export($t);
echo "\n";
?>
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