diff -urNp -x '*.orig' php-5.2.17.org/ext/pcre/php_pcre.c php-5.2.17/ext/pcre/php_pcre.c
--- php-5.2.17.org/ext/pcre/php_pcre.c	2010-01-03 10:23:27.000000000 +0100
+++ php-5.2.17/ext/pcre/php_pcre.c	2021-10-23 19:12:03.406458393 +0200
@@ -241,6 +241,7 @@ PHPAPI pcre_cache_entry* pcre_get_compil
 	char				*pattern;
 	int					 do_study = 0;
 	int					 poptions = 0;
+	int				count = 0;
 	unsigned const char *tables = NULL;
 #if HAVE_SETLOCALE
 	char				*locale = setlocale(LC_CTYPE, NULL);
@@ -253,10 +254,10 @@ PHPAPI pcre_cache_entry* pcre_get_compil
 	regex_len = strlen(regex);
 	if (zend_hash_find(&PCRE_G(pcre_cache), regex, regex_len+1, (void **)&pce) == SUCCESS) {
 		/*
-		 * We use a quick pcre_info() check to see whether cache is corrupted, and if it
+		 * We use a quick pcre_fullinfo() check to see whether cache is corrupted, and if it
 		 * is, we flush it and compile the pattern from scratch.
 		 */
-		if (pcre_info(pce->re, NULL, NULL) == PCRE_ERROR_BADMAGIC) {
+		if (pcre_fullinfo(pce->re, NULL, PCRE_INFO_CAPTURECOUNT, &count) == PCRE_ERROR_BADMAGIC) {
 			zend_hash_clean(&PCRE_G(pcre_cache));
 		} else {
 #if HAVE_SETLOCALE
diff -urNp -x '*.orig' php-5.2.17.org/ext/pcre/php_pcre.def php-5.2.17/ext/pcre/php_pcre.def
--- php-5.2.17.org/ext/pcre/php_pcre.def	2007-02-26 13:38:34.000000000 +0100
+++ php-5.2.17/ext/pcre/php_pcre.def	2021-10-23 19:12:03.406458393 +0200
@@ -4,7 +4,6 @@ php_pcre_copy_substring
 php_pcre_exec
 php_pcre_get_substring
 php_pcre_get_substring_list
-php_pcre_info
 php_pcre_maketables
 php_pcre_study
 php_pcre_version