check PQsetErrorContextVisibility availability (libpq >= 9.6)

Author: remicollet

UPGRADING

@@ -219,7 +219,8 @@ PHP 8.3 UPGRADE NOTES
   . Added posix_eaccess call to check the effective user id's permission for a path.
 
 - PGSQL:
-  . Added pg_set_error_context_visilibity to set the visibility of the context in error messages.
+  . Added pg_set_error_context_visilibity to set the visibility of the context
+    in error messages (with libpq >= 9.6).
 
 - Random:
   . Added Randomizer::getBytesFromString().

ext/pgsql/config.m4

@@ -65,6 +65,7 @@ if test "$PHP_PGSQL" != "no"; then
   AC_CHECK_LIB(pq, PQlibVersion,, AC_MSG_ERROR([Unable to build the PostgreSQL extension: at least libpq 9.1 is required]))
   AC_CHECK_LIB(pq, pg_encoding_to_char,AC_DEFINE(HAVE_PGSQL_WITH_MULTIBYTE_SUPPORT,1,[Whether libpq is compiled with --enable-multibyte]))
   AC_CHECK_LIB(pq, lo_truncate64, AC_DEFINE(HAVE_PG_LO64,1,[PostgreSQL 9.3 or later]))
+  AC_CHECK_LIB(pq, PQsetErrorContextVisibility, AC_DEFINE(HAVE_PG_CONTEXT_VISIBILITY,1,[PostgreSQL 9.6 or later]))
   LIBS=$old_LIBS
   LDFLAGS=$old_LDFLAGS
 

ext/pgsql/pgsql.c

@@ -2834,6 +2834,7 @@ PHP_FUNCTION(pg_set_error_verbosity)
 }
 /* }}} */
 
+#ifdef HAVE_PG_CONTEXT_VISIBILITY
 PHP_FUNCTION(pg_set_error_context_visibility)
 {
 	zval *pgsql_link = NULL;
@@ -2856,6 +2857,7 @@ PHP_FUNCTION(pg_set_error_context_visibility)
 		RETURN_THROWS();
 	}
 }
+#endif
 
 /* {{{ Set client encoding */
 PHP_FUNCTION(pg_set_client_encoding)

ext/pgsql/pgsql.stub.php

@@ -463,6 +463,7 @@
     const PGSQL_PIPELINE_ABORTED = UNKNOWN;
 #endif
 
+#ifdef HAVE_PG_CONTEXT_VISIBILITY
     /* For pg_set_error_context_visibility() */
 
     /**
@@ -480,7 +481,7 @@
      * @cvalue PQSHOW_CONTEXT_ALWAYS
      */
     const PGSQL_SHOW_CONTEXT_ALWAYS = UNKNOWN;
-    
+#endif
 
     function pg_connect(string $connection_string, int $flags = 0): PgSql\Connection|false {}
 
@@ -971,7 +972,9 @@ function pg_pipeline_sync(PgSql\Connection $connection): bool {}
     function pg_pipeline_status(PgSql\Connection $connection): int {}
 #endif
 
+#ifdef HAVE_PG_CONTEXT_VISIBILITY
     function pg_set_error_context_visibility(PgSql\Connection $connection, int $visibility): int {}
+#endif
 }
 
 namespace PgSql {

ext/pgsql/pgsql_arginfo.h

@@ -21,9 +21,11 @@ if (function_exists('pg_set_error_verbosity')) {
     pg_set_error_verbosity($db, PGSQL_ERRORS_VERBOSE);
     pg_set_error_verbosity($db, PGSQL_ERRORS_SQLSTATE);
 }
-pg_set_error_context_visibility($db, PGSQL_SHOW_CONTEXT_NEVER);
-pg_set_error_context_visibility($db, PGSQL_SHOW_CONTEXT_ERRORS);
-pg_set_error_context_visibility($db, PGSQL_SHOW_CONTEXT_ALWAYS);
+if (function_exists('pg_set_error_context_visibility')) {
+    pg_set_error_context_visibility($db, PGSQL_SHOW_CONTEXT_NEVER);
+    pg_set_error_context_visibility($db, PGSQL_SHOW_CONTEXT_ERRORS);
+    pg_set_error_context_visibility($db, PGSQL_SHOW_CONTEXT_ALWAYS);
+}
 echo "OK";
 ?>
 --EXPECT--