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URL: http://github.com/php/php-src/pull/21449/files

href="https://github.githubassets.com/assets/primer-primitives-6da842159062d25e.css" /> Add array size maximum to array_diff() by ndossche · Pull Request #21449 · php/php-src · GitHub
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Add array size maximum to array_diff() #21449

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Add array size maximum to array_diff() #21449

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7 changes: 6 additions & 1 deletion ext/standard/array.c
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Original file line number Diff line number Diff line change
Expand Up @@ -5846,7 +5846,7 @@ PHP_FUNCTION(array_diff)
{
zval *args;
uint32_t argc, i;
uint32_t num;
uint64_t num;
HashTable exclude;
zval *value;
zend_string *str, *tmp_str, *key;
Expand Down Expand Up @@ -5936,6 +5936,11 @@ PHP_FUNCTION(array_diff)
return;
}

if (UNEXPECTED(num >= HT_MAX_SIZE)) {
zend_throw_error(NULL, "The total number of elements must be lower than %u", HT_MAX_SIZE);
RETURN_THROWS();
}

ZVAL_NULL(&dummy);
/* create exclude map */
zend_hash_init(&exclude, num, NULL, NULL, 0);
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