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deprecate json_encode() of non-serializable instances #15724

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deprecate json_encode() of non-serializable instances #15724

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3a607a4
deprecate json_encode() of non-serializable instances
pilif Aug 30, 2024
588ad2b
allow json_encode() on most anonymous classes
pilif Sep 5, 2024
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5 changes: 5 additions & 0 deletions ext/json/json_encoder.c
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Original file line number Diff line number Diff line change
Expand Up @@ -677,6 +677,11 @@ zend_result php_json_encode_zval(smart_str *buf, zval *val, int options, php_jso
if (Z_OBJCE_P(val)->ce_flags & ZEND_ACC_ENUM) {
return php_json_encode_serializable_enum(buf, val, options, encoder);
}
if (Z_OBJCE_P(val)->ce_flags & ZEND_ACC_NOT_SERIALIZABLE) {
if (!(Z_OBJCE_P(val)->ce_flags & ZEND_ACC_ANON_CLASS) || (Z_OBJCE_P(val)->parent && Z_OBJCE_P(val)->parent->ce_flags & ZEND_ACC_NOT_SERIALIZABLE)) {
zend_error(E_DEPRECATED, "json_encode() of non-serializable class %s is deprecated", ZSTR_VAL(Z_OBJCE_P(val)->name));
}
}
/* fallthrough -- Non-serializable object */
ZEND_FALLTHROUGH;
case IS_ARRAY: {
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24 changes: 24 additions & 0 deletions tests/classes/json_encode_non_serializable_deprecated.phpt
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@@ -0,0 +1,24 @@
--TEST--
json_encode() on instances of classes market with ZEND_ACC_NOT_SERIALIZABLE
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This test should be located in the corresponding tests directory for json extension, ext/json/tests. And despite the outcome of the discussion on the internal list, I would see the benefit of including the tests now. I was surprised that those paths were not tested already.

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Minor typo

Suggested change
json_encode() on instances of classes market with ZEND_ACC_NOT_SERIALIZABLE
json_encode() on instances of classes marked with ZEND_ACC_NOT_SERIALIZABLE

--FILE--
<?php
function a() { for ($i=0; $i < 10; $i++) { yield $i; }};
$fn = a(...);

$c1 = new class() extends PDOStatement {};
$c2 = new class() extends stdClass {};
$c3 = new class() {};

echo json_encode(a());
echo json_encode($fn);
echo json_encode($c1);
echo json_encode($c2);
echo json_encode($c3);
?>
--EXPECTF--
Deprecated: json_encode() of non-serializable class Generator is deprecated in %s on line %d
{}
Deprecated: json_encode() of non-serializable class Closure is deprecated in %s on line %d
{}
Deprecated: json_encode() of non-serializable class PDOStatement@anonymous is deprecated in %s on line %d
{}{}{}
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