ext/standard: change print_r return type from string|bool to string|true

Author: Ayesh

UPGRADING

@@ -566,6 +566,7 @@ PHP 8.4 UPGRADE NOTES
   . output_add_rewrite_var() now uses url_rewriter.hosts instead of
     session.trans_sid_hosts for selecting hosts that will be rewritten.
   . highlight_string() now has a return type of string|true instead of string|bool.
+  . print_r() now has a return type of string|true instead of string|bool.
 
 ========================================
 6. New Functions

Zend/Optimizer/zend_func_infos.h

@@ -460,7 +460,7 @@ static const func_info_t func_infos[] = {
 	F1("ini_get_all", MAY_BE_ARRAY|MAY_BE_ARRAY_KEY_STRING|MAY_BE_ARRAY_OF_STRING|MAY_BE_ARRAY_OF_ARRAY|MAY_BE_ARRAY_OF_NULL|MAY_BE_FALSE),
 	F1("set_include_path", MAY_BE_STRING|MAY_BE_FALSE),
 	F1("get_include_path", MAY_BE_STRING|MAY_BE_FALSE),
-	F1("print_r", MAY_BE_STRING|MAY_BE_BOOL),
+	F1("print_r", MAY_BE_STRING|MAY_BE_TRUE),
 #if defined(HAVE_GETSERVBYPORT)
 	F1("getservbyport", MAY_BE_STRING|MAY_BE_FALSE),
 #endif

ext/standard/basic_functions.stub.php

@@ -2050,7 +2050,7 @@ function set_include_path(string $include_path): string|false {}
 function get_include_path(): string|false {}
 
 /** @refcount 1 */
-function print_r(mixed $value, bool $return = false): string|bool {}
+function print_r(mixed $value, bool $return = false): string|true {}
 
 function connection_aborted(): int {}