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Fix #81011: mb_convert_encoding removes references from arrays #6938

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Fix #81011: mb_convert_encoding removes references from arrays #6938

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Fix #81011: mb_convert_encoding removes references from arrays 
We need to dereference references.
  • Loading branch information
@cmb69
cmb69 committed May 4, 2021
commit 1691b0cd197edb08c73f0fb738e42f9db8375abc
4 changes: 4 additions & 0 deletions ext/mbstring/mbstring.c
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Original file line number Diff line number Diff line change
Expand Up @@ -3286,6 +3286,7 @@ MBSTRING_API HashTable *php_mb_convert_encoding_recursive(HashTable *input, cons
}
/* convert value */
ZEND_ASSERT(entry);
try_again:
switch(Z_TYPE_P(entry)) {
case IS_STRING:
cval = php_mb_convert_encoding(Z_STRVAL_P(entry), Z_STRLEN_P(entry), _to_encoding, _from_encodings, &cval_len);
Expand All @@ -3307,6 +3308,9 @@ MBSTRING_API HashTable *php_mb_convert_encoding_recursive(HashTable *input, cons
ZVAL_EMPTY_ARRAY(&entry_tmp);
}
break;
case IS_REFERENCE:
entry = Z_REFVAL_P(entry);
goto try_again;
case IS_OBJECT:
default:
if (key) {
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85 changes: 85 additions & 0 deletions ext/mbstring/tests/bug81011.phpt
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@@ -0,0 +1,85 @@
--TEST--
Bug #81011 (mb_convert_encoding removes references from arrays)
--SKIPIF--
<?php
if (!extension_loaded('mbstring')) die("skip mbstring extension not available");
?>
--FILE--
<?php
$array = [
'ads' => [
123 => ['name' => 'this', 'id' => 444],
234 => ['name' => 'that', 'id' => 555],
],
'other' => ['one', 'two']
];

// we modify array elements using reference
foreach( $array['ads'] as &$ad ){
$ad['premium'] = (int)($ad['id'] == 555);
}

var_dump($array);
var_dump(mb_convert_encoding($array, 'UTF-8', 'UTF-8'));
?>
--EXPECT--
array(2) {
["ads"]=>
array(2) {
[123]=>
array(3) {
["name"]=>
string(4) "this"
["id"]=>
int(444)
["premium"]=>
int(0)
}
[234]=>
&array(3) {
["name"]=>
string(4) "that"
["id"]=>
int(555)
["premium"]=>
int(1)
}
}
["other"]=>
array(2) {
[0]=>
string(3) "one"
[1]=>
string(3) "two"
}
}
array(2) {
["ads"]=>
array(2) {
[123]=>
array(3) {
["name"]=>
string(4) "this"
["id"]=>
int(444)
["premium"]=>
int(0)
}
[234]=>
array(3) {
["name"]=>
string(4) "that"
["id"]=>
int(555)
["premium"]=>
int(1)
}
}
["other"]=>
array(2) {
[0]=>
string(3) "one"
[1]=>
string(3) "two"
}
}