@ 2014-08-21T12:51:39Z 65<?php
define('MAX_LOOPS',5);
function withRefValue($elements, $transform) {
echo "\n---( Array with $elements element(s): )---\n";
//Build array:
for ($i=0; $i<$elements; $i++) {
$a[] = "v.$i";
}
$counter=0;
echo "--> State of array before loop:\n";
var_dump($a);
echo "--> Do loop:\n";
foreach ($a as $k=>&$v) {
echo " iteration $counter: \$k=$k; \$v=$v\n";
eval($transform);
$counter++;
if ($counter>MAX_LOOPS) {
echo " ** Stuck in a loop! **\n";
break;
}
}
echo "--> State of array after loop:\n";
var_dump($a);
}
echo "\nPopping elements off end of an unreferenced array, using &\$value.";
$transform = 'array_pop($a);';
withRefValue(1, $transform);
withRefValue(2, $transform);
withRefValue(3, $transform);
withRefValue(4, $transform);
withRefValue(5, $transform);
withRefValue(6, $transform);
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Output for 7.0.0 - 7.0.33 , 7.1.0 - 7.1.33 , 7.2.0 - 7.2.33 , 7.3.0 - 7.3.33 , 7.4.0 - 7.4.33 , 8.0.0 - 8.0.30 , 8.1.0 - 8.1.28 , 8.2.0 - 8.2.18 , 8.3.0 - 8.3.6 65
Popping elements off end of an unreferenced array, using &$value.
---( Array with 1 element(s): )---
--> State of array before loop:
array(1) {
[0]=>
string(3) "v.0"
}
--> Do loop:
iteration 0: $k=0; $v=v.0
--> State of array after loop:
array(0) {
}
---( Array with 2 element(s): )---
--> State of array before loop:
array(2) {
[0]=>
string(3) "v.0"
[1]=>
string(3) "v.1"
}
--> Do loop:
iteration 0: $k=0; $v=v.0
--> State of array after loop:
array(1) {
[0]=>
&string(3) "v.0"
}
---( Array with 3 element(s): )---
--> State of array before loop:
array(3) {
[0]=>
string(3) "v.0"
[1]=>
string(3) "v.1"
[2]=>
string(3) "v.2"
}
--> Do loop:
iteration 0: $k=0; $v=v.0
iteration 1: $k=1; $v=v.1
--> State of array after loop:
array(1) {
[0]=>
string(3) "v.0"
}
---( Array with 4 element(s): )---
--> State of array before loop:
array(4) {
[0]=>
string(3) "v.0"
[1]=>
string(3) "v.1"
[2]=>
string(3) "v.2"
[3]=>
string(3) "v.3"
}
--> Do loop:
iteration 0: $k=0; $v=v.0
iteration 1: $k=1; $v=v.1
--> State of array after loop:
array(2) {
[0]=>
string(3) "v.0"
[1]=>
&string(3) "v.1"
}
---( Array with 5 element(s): )---
--> State of array before loop:
array(5) {
[0]=>
string(3) "v.0"
[1]=>
string(3) "v.1"
[2]=>
string(3) "v.2"
[3]=>
string(3) "v.3"
[4]=>
string(3) "v.4"
}
--> Do loop:
iteration 0: $k=0; $v=v.0
iteration 1: $k=1; $v=v.1
iteration 2: $k=2; $v=v.2
--> State of array after loop:
array(2) {
[0]=>
string(3) "v.0"
[1]=>
string(3) "v.1"
}
---( Array with 6 element(s): )---
--> State of array before loop:
array(6) {
[0]=>
string(3) "v.0"
[1]=>
string(3) "v.1"
[2]=>
string(3) "v.2"
[3]=>
string(3) "v.3"
[4]=>
string(3) "v.4"
[5]=>
string(3) "v.5"
}
--> Do loop:
iteration 0: $k=0; $v=v.0
iteration 1: $k=1; $v=v.1
iteration 2: $k=2; $v=v.2
--> State of array after loop:
array(3) {
[0]=>
string(3) "v.0"
[1]=>
string(3) "v.1"
[2]=>
&string(3) "v.2"
}
Output for 5.2.2 - 5.2.17 , 5.3.0 - 5.3.29 , 5.4.0 - 5.4.45 , 5.5.0 - 5.5.38 , 5.6.0 - 5.6.40 65
Popping elements off end of an unreferenced array, using &$value.
---( Array with 1 element(s): )---
--> State of array before loop:
array(1) {
[0]=>
string(3) "v.0"
}
--> Do loop:
iteration 0: $k=0; $v=v.0
--> State of array after loop:
array(0) {
}
---( Array with 2 element(s): )---
--> State of array before loop:
array(2) {
[0]=>
string(3) "v.0"
[1]=>
string(3) "v.1"
}
--> Do loop:
iteration 0: $k=0; $v=v.0
iteration 1: $k=0; $v=v.0
--> State of array after loop:
array(0) {
}
---( Array with 3 element(s): )---
--> State of array before loop:
array(3) {
[0]=>
string(3) "v.0"
[1]=>
string(3) "v.1"
[2]=>
string(3) "v.2"
}
--> Do loop:
iteration 0: $k=0; $v=v.0
iteration 1: $k=1; $v=v.1
--> State of array after loop:
array(1) {
[0]=>
string(3) "v.0"
}
---( Array with 4 element(s): )---
--> State of array before loop:
array(4) {
[0]=>
string(3) "v.0"
[1]=>
string(3) "v.1"
[2]=>
string(3) "v.2"
[3]=>
string(3) "v.3"
}
--> Do loop:
iteration 0: $k=0; $v=v.0
iteration 1: $k=1; $v=v.1
iteration 2: $k=0; $v=v.0
iteration 3: $k=0; $v=v.0
--> State of array after loop:
array(0) {
}
---( Array with 5 element(s): )---
--> State of array before loop:
array(5) {
[0]=>
string(3) "v.0"
[1]=>
string(3) "v.1"
[2]=>
string(3) "v.2"
[3]=>
string(3) "v.3"
[4]=>
string(3) "v.4"
}
--> Do loop:
iteration 0: $k=0; $v=v.0
iteration 1: $k=1; $v=v.1
iteration 2: $k=2; $v=v.2
--> State of array after loop:
array(2) {
[0]=>
string(3) "v.0"
[1]=>
string(3) "v.1"
}
---( Array with 6 element(s): )---
--> State of array before loop:
array(6) {
[0]=>
string(3) "v.0"
[1]=>
string(3) "v.1"
[2]=>
string(3) "v.2"
[3]=>
string(3) "v.3"
[4]=>
string(3) "v.4"
[5]=>
string(3) "v.5"
}
--> Do loop:
iteration 0: $k=0; $v=v.0
iteration 1: $k=1; $v=v.1
iteration 2: $k=2; $v=v.2
iteration 3: $k=0; $v=v.0
iteration 4: $k=1; $v=v.1
--> State of array after loop:
array(1) {
[0]=>
string(3) "v.0"
}
Output for 5.0.0 - 5.0.5 , 5.1.0 - 5.1.6 , 5.2.0 - 5.2.1 65
Popping elements off end of an unreferenced array, using &$value.
---( Array with 1 element(s): )---
--> State of array before loop:
array(1) {
[0]=>
string(3) "v.0"
}
--> Do loop:
iteration 0: $k=0; $v=v.0
--> State of array after loop:
array(0) {
}
---( Array with 2 element(s): )---
--> State of array before loop:
array(2) {
[0]=>
string(3) "v.0"
[1]=>
string(3) "v.1"
}
--> Do loop:
iteration 0: $k=0; $v=v.0
iteration 1: $k=1; $v=v.1
--> State of array after loop:
array(0) {
}
---( Array with 3 element(s): )---
--> State of array before loop:
array(3) {
[0]=>
string(3) "v.0"
[1]=>
string(3) "v.1"
[2]=>
string(3) "v.2"
}
--> Do loop:
iteration 0: $k=0; $v=v.0
iteration 1: $k=1; $v=v.1
iteration 2: $k=2; $v=v.2
--> State of array after loop:
array(0) {
}
---( Array with 4 element(s): )---
--> State of array before loop:
array(4) {
[0]=>
string(3) "v.0"
[1]=>
string(3) "v.1"
[2]=>
string(3) "v.2"
[3]=>
string(3) "v.3"
}
--> Do loop:
iteration 0: $k=0; $v=v.0
iteration 1: $k=1; $v=v.1
iteration 2: $k=2; $v=v.2
iteration 3: $k=3; $v=v.3
--> State of array after loop:
array(0) {
}
---( Array with 5 element(s): )---
--> State of array before loop:
array(5) {
[0]=>
string(3) "v.0"
[1]=>
string(3) "v.1"
[2]=>
string(3) "v.2"
[3]=>
string(3) "v.3"
[4]=>
string(3) "v.4"
}
--> Do loop:
iteration 0: $k=0; $v=v.0
iteration 1: $k=1; $v=v.1
iteration 2: $k=2; $v=v.2
iteration 3: $k=3; $v=v.3
iteration 4: $k=4; $v=v.4
--> State of array after loop:
array(0) {
}
---( Array with 6 element(s): )---
--> State of array before loop:
array(6) {
[0]=>
string(3) "v.0"
[1]=>
string(3) "v.1"
[2]=>
string(3) "v.2"
[3]=>
string(3) "v.3"
[4]=>
string(3) "v.4"
[5]=>
string(3) "v.5"
}
--> Do loop:
iteration 0: $k=0; $v=v.0
iteration 1: $k=1; $v=v.1
iteration 2: $k=2; $v=v.2
iteration 3: $k=3; $v=v.3
iteration 4: $k=4; $v=v.4
iteration 5: $k=5; $v=v.5
** Stuck in a loop! **
--> State of array after loop:
array(0) {
}
Output for 4.4.2 - 4.4.9 Parse error: syntax error, unexpected '&', expecting T_VARIABLE or '$' in /in/GMGUs on line 17
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 Parse error: parse error, unexpected '&', expecting T_VARIABLE or '$' in /in/GMGUs on line 17
Process exited with code 255 . Output for 4.3.2 - 4.3.4 Parse error: parse error, expecting `T_VARIABLE' or `'$'' in /in/GMGUs on line 17
Process exited with code 255 . preferences:dark mode live preview
309.43 ms | 401 KiB | 458 Q