posix add sysconf call.

ext/posix/posix.c

@@ -1145,3 +1145,14 @@ PHP_FUNCTION(posix_initgroups)
 }
 /* }}} */
 #endif
+
+PHP_FUNCTION(posix_sysconf)
+{
+	zend_long conf_id;
+
+	ZEND_PARSE_PARAMETERS_START(1, 1)
+		Z_PARAM_LONG(conf_id)
+	ZEND_PARSE_PARAMETERS_END();
+
+	RETURN_LONG(sysconf(conf_id));
+}

ext/posix/posix.stub.php

@@ -191,6 +191,34 @@
  */
 const POSIX_RLIMIT_INFINITY = UNKNOWN;
 #endif
+#ifdef _SC_ARG_MAX
+/**
+ * @var int
+ * @cvalue _SC_ARG_MAX
+ */
+const POSIX_SC_ARG_MAX = UNKNOWN;
+#endif
+#ifdef _SC_PAGESIZE
+/**
+ * @var int
+ * @cvalue _SC_PAGESIZE
+ */
+const POSIX_SC_PAGESIZE = UNKNOWN;
+#endif
+#ifdef _SC_NPROCESSORS_CONF
+/**
+ * @var int
+ * @cvalue _SC_NPROCESSORS_CONF
+ */
+const POSIX_SC_NPROCESSORS_CONF = UNKNOWN;
+#endif
+#ifdef _SC_NPROCESSORS_ONLN
+/**
+ * @var int
+ * @cvalue _SC_NPROCESSORS_ONLN
+ */
+const POSIX_SC_NPROCESSORS_ONLN = UNKNOWN;
+#endif
 
 function posix_kill(int $process_id, int $signal): bool {}
 
@@ -327,3 +355,5 @@ function posix_strerror(int $error_code): string {}
 #ifdef HAVE_INITGROUPS
 function posix_initgroups(string $username, int $group_id): bool {}
 #endif
+
+function posix_sysconf(int $conf_id): int {}

ext/posix/tests/posix_sysconf.phpt

@@ -0,0 +1,14 @@
+--TEST--
+Test posix_sysconf
+--EXTENSIONS--
+posix
+--FILE--
+<?php
+var_dump(posix_sysconf(-1));
+var_dump(posix_errno() != 0);
+var_dump(posix_sysconf(POSIX_SC_NPROCESSORS_ONLN));
+?>
+--EXPECTF--
+int(-1)
+bool(false)
+int(%d)