<?php
function z($a)
{
$a[0]=1;
//now we changed array, so PHP should make it's copy:
debug_zval_dump($a);
return $a;
}
$a = [ 'a', 'b', 'c' ];
debug_zval_dump($a);
foreach(z($a) as &$x) {
$x .= 'q';
}
print_r($a);
- Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
- array(3) refcount(3){
[0]=>
string(1) "a" interned
[1]=>
string(1) "b" interned
[2]=>
string(1) "c" interned
}
array(3) refcount(2){
[0]=>
int(1)
[1]=>
string(1) "b" interned
[2]=>
string(1) "c" interned
}
Array
(
[0] => a
[1] => b
[2] => c
)
- Output for 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30
- array(3) refcount(3){
[0]=>
string(1) "a" refcount(1)
[1]=>
string(1) "b" refcount(1)
[2]=>
string(1) "c" refcount(1)
}
array(3) refcount(2){
[0]=>
int(1)
[1]=>
string(1) "b" refcount(1)
[2]=>
string(1) "c" refcount(1)
}
Array
(
[0] => a
[1] => b
[2] => c
)
- Output for 7.1.0 - 7.1.20, 7.2.0 - 7.2.33
- array(3) refcount(3){
[0]=>
string(1) "a" refcount(1)
[1]=>
string(1) "b" refcount(1)
[2]=>
string(1) "c" refcount(1)
}
array(3) refcount(2){
[0]=>
int(1)
[1]=>
string(1) "b" refcount(2)
[2]=>
string(1) "c" refcount(2)
}
Array
(
[0] => a
[1] => b
[2] => c
)
- Output for 7.0.0 - 7.0.20
- array(3) refcount(2){
[0]=>
string(1) "a" refcount(2)
[1]=>
string(1) "b" refcount(2)
[2]=>
string(1) "c" refcount(2)
}
array(3) refcount(2){
[0]=>
int(1)
[1]=>
string(1) "b" refcount(3)
[2]=>
string(1) "c" refcount(3)
}
Array
(
[0] => a
[1] => b
[2] => c
)
- Output for 5.5.24 - 5.5.35, 5.6.7 - 5.6.28
- array(3) refcount(2){
[0]=>
string(1) "a" refcount(1)
[1]=>
string(1) "b" refcount(1)
[2]=>
string(1) "c" refcount(1)
}
array(3) refcount(2){
[0]=>
long(1) refcount(1)
[1]=>
string(1) "b" refcount(2)
[2]=>
string(1) "c" refcount(2)
}
Array
(
[0] => a
[1] => b
[2] => c
)
- Output for 5.4.0 - 5.4.45
- Fatal error: Cannot create references to elements of a temporary array expression in /in/dldTB on line 14
Process exited with code 255. - Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
- Parse error: syntax error, unexpected '[' in /in/dldTB on line 12
Process exited with code 255. - Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
- Parse error: parse error, unexpected '[' in /in/dldTB on line 12
Process exited with code 255. - Output for 4.3.2 - 4.3.4
- Parse error: parse error in /in/dldTB on line 12
Process exited with code 255.
preferences:
261.25 ms | 401 KiB | 314 Q