FPM_IPV6_DESC=	Apply experimental patch to enable ipv6 support

# Wrap it properly

# We need IPV6 support and patch doesn't make sense if PHP_FPM isn't enabled.

.if ${PORT_OPTIONS:MIPV6}

.if ${PORT_OPTIONS:MFPM_IPV6}

EXTRA_PATCHES+=	${FILESDIR}/extra-patch-php-fpm-ipv6:-p1

.endif

.endif

From e767189535ff02cee43dfefecfdb5d36b3c81447 Mon Sep 17 00:00:00 2001

From: Robin Gloster <robin@loc-com.de>

Date: Sun, 23 Mar 2014 17:43:20 +0100

Subject: [PATCH 1/3] add IPv6 support to php-fpm

---

 sapi/fpm/fpm/fpm_sockets.c | 82 +++++++++++++++++++++++-----------------------

 sapi/fpm/fpm/fpm_sockets.h |  6 ----

 sapi/fpm/tests/003.phpt    | 53 ++++++++++++++++++++++++++++++

 3 files changed, 94 insertions(+), 47 deletions(-)

 create mode 100644 sapi/fpm/tests/003.phpt

diff --git a/sapi/fpm/fpm/fpm_sockets.c b/sapi/fpm/fpm/fpm_sockets.c

index e056565..583b1fa 100644

--- a/sapi/fpm/fpm/fpm_sockets.c

+++ b/sapi/fpm/fpm/fpm_sockets.c

@@ -39,29 +39,6 @@ struct listening_socket_s {

 static struct fpm_array_s sockets_list;

-static int fpm_sockets_resolve_af_inet(char *node, char *service, struct sockaddr_in *addr) /* {{{ */

-{

-	struct addrinfo *res;

-	struct addrinfo hints;

-	int ret;

-

-	memset(&hints, 0, sizeof(hints));

-	hints.ai_family = AF_INET;

-	ret = getaddrinfo(node, service, &hints, &res);

-

-	if (ret != 0) {

-		zlog(ZLOG_ERROR, "can't resolve hostname '%s%s%s': getaddrinfo said: %s%s%s\n",

-					node, service ? ":" : "", service ? service : "",

-					gai_strerror(ret), ret == EAI_SYSTEM ? ", system error: " : "", ret == EAI_SYSTEM ? strerror(errno) : "");

-		return -1;

-	}

-

-	*addr = *(struct sockaddr_in *) res->ai_addr;

-	freeaddrinfo(res);

-	return 0;

-}

-/* }}} */

-

 enum { FPM_GET_USE_SOCKET = 1, FPM_STORE_SOCKET = 2, FPM_STORE_USE_SOCKET = 3 };

 static void fpm_sockets_cleanup(int which, void *arg) /* {{{ */

@@ -98,14 +75,24 @@ static void fpm_sockets_cleanup(int which, void *arg) /* {{{ */

 }

 /* }}} */

+static void *fpm_get_in_addr(struct sockaddr *sa) /* {{{ */

+{

+    if (sa->sa_family == AF_INET) {

+        return &(((struct sockaddr_in*)sa)->sin_addr);

+    }

+

+    return &(((struct sockaddr_in6*)sa)->sin6_addr);

+}

+/* }}} */

+

 static int fpm_sockets_hash_op(int sock, struct sockaddr *sa, char *key, int type, int op) /* {{{ */

 {

 	if (key == NULL) {

 		switch (type) {

 			case FPM_AF_INET : {

 				struct sockaddr_in *sa_in = (struct sockaddr_in *) sa;

-				key = alloca(sizeof("xxx.xxx.xxx.xxx:ppppp"));

-				sprintf(key, "%u.%u.%u.%u:%u", IPQUAD(&sa_in->sin_addr), (unsigned int) ntohs(sa_in->sin_port));

+				key = alloca(INET6_ADDRSTRLEN);

+				inet_ntop(sa->sa_family, fpm_get_in_addr(sa), key, sizeof key);

 				break;

 			}

@@ -254,11 +241,14 @@ enum fpm_address_domain fpm_sockets_domain_from_address(char *address) /* {{{ */

 static int fpm_socket_af_inet_listening_socket(struct fpm_worker_pool_s *wp) /* {{{ */

 {

-	struct sockaddr_in sa_in;

+	struct addrinfo hints, *servinfo, *p;

 	char *dup_address = strdup(wp->config->listen_address);

-	char *port_str = strchr(dup_address, ':');

+	char *port_str = strrchr(dup_address, ':');

 	char *addr = NULL;

+	int addr_len;

 	int port = 0;

+	int sock;

+	int status;

 	if (port_str) { /* this is host:port pair */

 		*port_str++ = '\0';

@@ -274,23 +264,33 @@ static int fpm_socket_af_inet_listening_socket(struct fpm_worker_pool_s *wp) /*

 		return -1;

 	}

-	memset(&sa_in, 0, sizeof(sa_in));

+	// strip brackets from address for getaddrinfo

+	addr_len = strlen(addr);

+	if (addr[0] == '[' && addr[addr_len - 1] == ']') {

+		addr[addr_len - 1] = '\0';

+		addr++;

+	}

-	if (addr) {

-		sa_in.sin_addr.s_addr = inet_addr(addr);

-		if (sa_in.sin_addr.s_addr == INADDR_NONE) { /* do resolve */

-			if (0 > fpm_sockets_resolve_af_inet(addr, NULL, &sa_in)) {

-				return -1;

-			}

-			zlog(ZLOG_NOTICE, "address '%s' resolved as %u.%u.%u.%u", addr, IPQUAD(&sa_in.sin_addr));

-		}

-	} else {

-		sa_in.sin_addr.s_addr = htonl(INADDR_ANY);

+	memset(&hints, 0, sizeof hints);

+	hints.ai_family = AF_UNSPEC;

+	hints.ai_socktype = SOCK_STREAM;

+

+	if ((status = getaddrinfo(addr, port_str, &hints, &servinfo)) != 0) {

+		zlog(ZLOG_ERROR, "getaddrinfo: %s\n", gai_strerror(status));

+		return -1;

 	}

-	sa_in.sin_family = AF_INET;

-	sa_in.sin_port = htons(port);

+

 	free(dup_address);

-	return fpm_sockets_get_listening_socket(wp, (struct sockaddr *) &sa_in, sizeof(struct sockaddr_in));

+

+	for (p = servinfo; p != NULL; p = p->ai_next) {

+		if ((sock = fpm_sockets_get_listening_socket(wp, p->ai_addr, p->ai_addrlen)) != -1) {

+			break;

+		}

+	}

+

+	freeaddrinfo(servinfo);

+

+	return sock;

 }

 /* }}} */

diff --git a/sapi/fpm/fpm/fpm_sockets.h b/sapi/fpm/fpm/fpm_sockets.h

index 121c016..446c78e 100644

--- a/sapi/fpm/fpm/fpm_sockets.h

+++ b/sapi/fpm/fpm/fpm_sockets.h

@@ -45,10 +45,4 @@ static inline int fd_set_blocked(int fd, int blocked) /* {{{ */

 }

 /* }}} */

-#define IPQUAD(sin_addr) \

-			(unsigned int) ((unsigned char *) &(sin_addr)->s_addr)[0], \

-			(unsigned int) ((unsigned char *) &(sin_addr)->s_addr)[1], \

-			(unsigned int) ((unsigned char *) &(sin_addr)->s_addr)[2], \

-			(unsigned int) ((unsigned char *) &(sin_addr)->s_addr)[3]

-

 #endif

diff --git a/sapi/fpm/tests/003.phpt b/sapi/fpm/tests/003.phpt

new file mode 100644

index 0000000..389cb24

--- /dev/null

+++ b/sapi/fpm/tests/003.phpt

@@ -0,0 +1,53 @@

+--TEST--

+FPM: Test IPv6 support

+--SKIPIF--

+<?php include "skipif.inc"; ?>

+--FILE--

+<?php

+

+include "include.inc";

+

+$logfile = dirname(__FILE__).'/php-fpm.log.tmp';

+

+$cfg = <<<EOT

+[global]

+error_log = $logfile

+[unconfined]

+listen = [::1]:9000

+pm = dynamic

+pm.max_children = 5

+pm.start_servers = 2

+pm.min_spare_servers = 1

+pm.max_spare_servers = 3

+EOT;

+

+$fpm = run_fpm($cfg, $tail);

+if (is_resource($fpm)) {

+    var_dump(fgets($tail));

+    var_dump(fgets($tail));

+    $i = 0;

+    while (($i++ < 30) && !($fp = fsockopen('[::1]', 9000))) {

+        usleep(10000);

+    }

+    if ($fp) {

+        echo "Done\n";

+        fclose($fp);

+    }

+    proc_terminate($fpm);

+    stream_get_contents($tail);

+    fclose($tail);

+    proc_close($fpm);

+}

+

+?>

+--EXPECTF--

+string(%d) "[%d-%s-%d %d:%d:%d] NOTICE: fpm is running, pid %d

+"

+string(%d) "[%d-%s-%d %d:%d:%d] NOTICE: ready to handle connections

+"

+Done

+--CLEAN--

+<?php

+    $logfile = dirname(__FILE__).'/php-fpm.log.tmp';

+    @unlink($logfile);

+?>

-- 

1.9.3

From 6057125f4383c661b0c1af71a9e2b026f6ebecf6 Mon Sep 17 00:00:00 2001

From: Robin Gloster <robin@loc-com.de>

Date: Mon, 24 Mar 2014 00:15:13 +0100

Subject: [PATCH 2/3] check for addr==null and add ipv6 to conf

---

 sapi/fpm/fpm/fpm_sockets.c | 11 ++++++-----

 sapi/fpm/php-fpm.conf.in   | 48 ++++++++++++++++++++++++----------------------

 2 files changed, 31 insertions(+), 28 deletions(-)

diff --git a/sapi/fpm/fpm/fpm_sockets.c b/sapi/fpm/fpm/fpm_sockets.c

index 583b1fa..da14d63 100644

--- a/sapi/fpm/fpm/fpm_sockets.c

+++ b/sapi/fpm/fpm/fpm_sockets.c

@@ -90,7 +90,6 @@ static int fpm_sockets_hash_op(int sock, struct sockaddr *sa, char *key, int typ

 	if (key == NULL) {

 		switch (type) {

 			case FPM_AF_INET : {

-				struct sockaddr_in *sa_in = (struct sockaddr_in *) sa;

 				key = alloca(INET6_ADDRSTRLEN);

 				inet_ntop(sa->sa_family, fpm_get_in_addr(sa), key, sizeof key);

 				break;

@@ -265,10 +264,12 @@ static int fpm_socket_af_inet_listening_socket(struct fpm_worker_pool_s *wp) /*

 	}

 	// strip brackets from address for getaddrinfo

-	addr_len = strlen(addr);

-	if (addr[0] == '[' && addr[addr_len - 1] == ']') {

-		addr[addr_len - 1] = '\0';

-		addr++;

+	if (addr != NULL) {

+		addr_len = strlen(addr);

+		if (addr[0] == '[' && addr[addr_len - 1] == ']') {

+			addr[addr_len - 1] = '\0';

+			addr++;

+		}

 	}

 	memset(&hints, 0, sizeof hints);

diff --git a/sapi/fpm/php-fpm.conf.in b/sapi/fpm/php-fpm.conf.in

index ab03736..d6ff2ae 100644

--- a/sapi/fpm/php-fpm.conf.in

+++ b/sapi/fpm/php-fpm.conf.in

@@ -55,7 +55,7 @@

 ; Default Value: 0

 ;emergency_restart_threshold = 0

-; Interval of time used by emergency_restart_interval to determine when 

+; Interval of time used by emergency_restart_interval to determine when

 ; a graceful restart will be initiated.  This can be useful to work around

 ; accidental corruptions in an accelerator's shared memory.

 ; Available Units: s(econds), m(inutes), h(ours), or d(ays)

@@ -87,11 +87,11 @@

 ; Send FPM to background. Set to 'no' to keep FPM in foreground for debugging.

 ; Default Value: yes

 ;daemonize = yes

- 

+

 ; Set open file descriptor rlimit for the master process.

 ; Default Value: system defined value

 ;rlimit_files = 1024

- 

+

 ; Set max core size rlimit for the master process.

 ; Possible Values: 'unlimited' or an integer greater or equal to 0

 ; Default Value: system defined value

@@ -116,7 +116,7 @@

 ;systemd_interval = 10

 ;;;;;;;;;;;;;;;;;;;;

-; Pool Definitions ; 

+; Pool Definitions ;

 ;;;;;;;;;;;;;;;;;;;;

 ; Multiple pools of child processes may be started with different listening

@@ -152,6 +152,8 @@ group = @php_fpm_group@

 ; Valid syntaxes are:

 ;   'ip.add.re.ss:port'    - to listen on a TCP socket to a specific address on

 ;                            a specific port;

+;   '[ip:6:addr:ess]:port' - to listen on a TCP socket to a specific ipv6 address on

+;                            a specific port;

 ;   'port'                 - to listen on a TCP socket to all addresses on a

 ;                            specific port;

 ;   '/path/to/unix/socket' - to listen on a unix socket.

@@ -243,7 +245,7 @@ pm.max_spare_servers = 3

 ; Note: Used only when pm is set to 'ondemand'

 ; Default Value: 10s

 ;pm.process_idle_timeout = 10s;

- 

+

 ; The number of requests each child process should execute before respawning.

 ; This can be useful to work around memory leaks in 3rd party libraries. For

 ; endless request processing specify '0'. Equivalent to PHP_FCGI_MAX_REQUESTS.

@@ -296,7 +298,7 @@ pm.max_spare_servers = 3

 ;

 ; By default the status page only outputs short status. Passing 'full' in the

 ; query string will also return status for each pool process.

-; Example: 

+; Example:

 ;   http://www.foo.bar/status?full

 ;   http://www.foo.bar/status?json&full

 ;   http://www.foo.bar/status?html&full

@@ -346,9 +348,9 @@ pm.max_spare_servers = 3

 ; Note: The value must start with a leading slash (/). The value can be

 ;       anything, but it may not be a good idea to use the .php extension or it

 ;       may conflict with a real PHP file.

-; Default Value: not set 

+; Default Value: not set

 ;pm.status_path = /status

- 

+

 ; The ping URI to call the monitoring page of FPM. If this value is not set, no

 ; URI will be recognized as a ping page. This could be used to test from outside

 ; that FPM is alive and responding, or to

@@ -409,7 +411,7 @@ pm.max_spare_servers = 3

 ;      - ....

 ;  %p: PID of the child that serviced the request

 ;  %P: PID of the parent of the child that serviced the request

-;  %q: the query string 

+;  %q: the query string

 ;  %Q: the '?' character if query string exists

 ;  %r: the request URI (without the query string, see %q and %Q)

 ;  %R: remote IP address

@@ -424,50 +426,50 @@ pm.max_spare_servers = 3

 ;

 ; Default: "%R - %u %t \"%m %r\" %s"

 ;access.format = "%R - %u %t \"%m %r%Q%q\" %s %f %{mili}d %{kilo}M %C%%"

- 

+

 ; The log file for slow requests

 ; Default Value: not set

 ; Note: slowlog is mandatory if request_slowlog_timeout is set

 ;slowlog = log/$pool.log.slow

- 

+

 ; The timeout for serving a single request after which a PHP backtrace will be

 ; dumped to the 'slowlog' file. A value of '0s' means 'off'.

 ; Available units: s(econds)(default), m(inutes), h(ours), or d(ays)

 ; Default Value: 0

 ;request_slowlog_timeout = 0

- 

+

 ; The timeout for serving a single request after which the worker process will

 ; be killed. This option should be used when the 'max_execution_time' ini option

 ; does not stop script execution for some reason. A value of '0' means 'off'.

 ; Available units: s(econds)(default), m(inutes), h(ours), or d(ays)

 ; Default Value: 0

 ;request_terminate_timeout = 0

- 

+

 ; Set open file descriptor rlimit.

 ; Default Value: system defined value

 ;rlimit_files = 1024

- 

+

 ; Set max core size rlimit.

 ; Possible Values: 'unlimited' or an integer greater or equal to 0

 ; Default Value: system defined value

 ;rlimit_core = 0

- 

+

 ; Chroot to this directory at the start. This value must be defined as an

 ; absolute path. When this value is not set, chroot is not used.

 ; Note: you can prefix with '$prefix' to chroot to the pool prefix or one

 ; of its subdirectories. If the pool prefix is not set, the global prefix

 ; will be used instead.

-; Note: chrooting is a great security feature and should be used whenever 

+; Note: chrooting is a great security feature and should be used whenever

 ;       possible. However, all PHP paths will be relative to the chroot

 ;       (error_log, sessions.save_path, ...).

 ; Default Value: not set

-;chroot = 

- 

+;chroot =

+

 ; Chdir to this directory at the start.

 ; Note: relative path can be used.

 ; Default Value: current directory or / when chroot

 ;chdir = /var/www

- 

+

 ; Redirect worker stdout and stderr into main error log. If not set, stdout and

 ; stderr will be redirected to /dev/null according to FastCGI specs.

 ; Note: on highloaded environement, this can cause some delay in the page

@@ -491,7 +493,7 @@ pm.max_spare_servers = 3

 ; Note: set an empty value to allow all extensions.

 ; Default Value: .php

 ;security.limit_extensions = .php .php3 .php4 .php5

- 

+

 ; Pass environment variables like LD_LIBRARY_PATH. All $VARIABLEs are taken from

 ; the current environment.

 ; Default Value: clean env

@@ -505,7 +507,7 @@ pm.max_spare_servers = 3

 ; overwrite the values previously defined in the php.ini. The directives are the

 ; same as the PHP SAPI:

 ;   php_value/php_flag             - you can set classic ini defines which can

-;                                    be overwritten from PHP call 'ini_set'. 

+;                                    be overwritten from PHP call 'ini_set'.

 ;   php_admin_value/php_admin_flag - these directives won't be overwritten by

 ;                                     PHP call 'ini_set'

 ; For php_*flag, valid values are on, off, 1, 0, true, false, yes or no.

-- 

1.9.3

From 12c3e728c634f17232883068c14f36a68b78952a Mon Sep 17 00:00:00 2001

From: Robin Gloster <robin@loc-com.de>

Date: Thu, 3 Apr 2014 13:22:31 +0200

Subject: [PATCH 3/3] revert whitespace

---

 sapi/fpm/php-fpm.conf.in | 48 ++++++++++++++++++++++++------------------------

 1 file changed, 24 insertions(+), 24 deletions(-)

diff --git a/sapi/fpm/php-fpm.conf.in b/sapi/fpm/php-fpm.conf.in

index d6ff2ae..8e242aa 100644

--- a/sapi/fpm/php-fpm.conf.in

+++ b/sapi/fpm/php-fpm.conf.in

@@ -55,7 +55,7 @@

 ; Default Value: 0

 ;emergency_restart_threshold = 0

-; Interval of time used by emergency_restart_interval to determine when

+; Interval of time used by emergency_restart_interval to determine when 

 ; a graceful restart will be initiated.  This can be useful to work around

 ; accidental corruptions in an accelerator's shared memory.

 ; Available Units: s(econds), m(inutes), h(ours), or d(ays)

@@ -87,11 +87,11 @@

 ; Send FPM to background. Set to 'no' to keep FPM in foreground for debugging.

 ; Default Value: yes

 ;daemonize = yes

-

+ 

 ; Set open file descriptor rlimit for the master process.

 ; Default Value: system defined value

 ;rlimit_files = 1024

-

+ 

 ; Set max core size rlimit for the master process.

 ; Possible Values: 'unlimited' or an integer greater or equal to 0

 ; Default Value: system defined value

@@ -116,7 +116,7 @@

 ;systemd_interval = 10

 ;;;;;;;;;;;;;;;;;;;;

-; Pool Definitions ;

+; Pool Definitions ; 

 ;;;;;;;;;;;;;;;;;;;;

 ; Multiple pools of child processes may be started with different listening

@@ -152,7 +152,7 @@ group = @php_fpm_group@

 ; Valid syntaxes are:

 ;   'ip.add.re.ss:port'    - to listen on a TCP socket to a specific address on

 ;                            a specific port;

-;   '[ip:6:addr:ess]:port' - to listen on a TCP socket to a specific ipv6 address on

+;   '[ip:6:addr:ess]:port' - to listen on a TCP socket to a specific IPv6 address on

 ;                            a specific port;

 ;   'port'                 - to listen on a TCP socket to all addresses on a

 ;                            specific port;

@@ -245,7 +245,7 @@ pm.max_spare_servers = 3

 ; Note: Used only when pm is set to 'ondemand'

 ; Default Value: 10s

 ;pm.process_idle_timeout = 10s;

-

+ 

 ; The number of requests each child process should execute before respawning.

 ; This can be useful to work around memory leaks in 3rd party libraries. For

 ; endless request processing specify '0'. Equivalent to PHP_FCGI_MAX_REQUESTS.

@@ -298,7 +298,7 @@ pm.max_spare_servers = 3

 ;

 ; By default the status page only outputs short status. Passing 'full' in the

 ; query string will also return status for each pool process.

-; Example:

+; Example: 

 ;   http://www.foo.bar/status?full

 ;   http://www.foo.bar/status?json&full

 ;   http://www.foo.bar/status?html&full

@@ -348,9 +348,9 @@ pm.max_spare_servers = 3

 ; Note: The value must start with a leading slash (/). The value can be

 ;       anything, but it may not be a good idea to use the .php extension or it

 ;       may conflict with a real PHP file.

-; Default Value: not set

+; Default Value: not set 

 ;pm.status_path = /status

-

+ 

 ; The ping URI to call the monitoring page of FPM. If this value is not set, no

 ; URI will be recognized as a ping page. This could be used to test from outside

 ; that FPM is alive and responding, or to

@@ -411,7 +411,7 @@ pm.max_spare_servers = 3

 ;      - ....

 ;  %p: PID of the child that serviced the request

 ;  %P: PID of the parent of the child that serviced the request

-;  %q: the query string

+;  %q: the query string 

 ;  %Q: the '?' character if query string exists

 ;  %r: the request URI (without the query string, see %q and %Q)

 ;  %R: remote IP address

@@ -426,50 +426,50 @@ pm.max_spare_servers = 3

 ;

 ; Default: "%R - %u %t \"%m %r\" %s"

 ;access.format = "%R - %u %t \"%m %r%Q%q\" %s %f %{mili}d %{kilo}M %C%%"

-

+ 

 ; The log file for slow requests

 ; Default Value: not set

 ; Note: slowlog is mandatory if request_slowlog_timeout is set

 ;slowlog = log/$pool.log.slow

-

+ 

 ; The timeout for serving a single request after which a PHP backtrace will be

 ; dumped to the 'slowlog' file. A value of '0s' means 'off'.

 ; Available units: s(econds)(default), m(inutes), h(ours), or d(ays)

 ; Default Value: 0

 ;request_slowlog_timeout = 0

-

+ 

 ; The timeout for serving a single request after which the worker process will

 ; be killed. This option should be used when the 'max_execution_time' ini option

 ; does not stop script execution for some reason. A value of '0' means 'off'.

 ; Available units: s(econds)(default), m(inutes), h(ours), or d(ays)

 ; Default Value: 0

 ;request_terminate_timeout = 0

-

+ 

 ; Set open file descriptor rlimit.

 ; Default Value: system defined value

 ;rlimit_files = 1024

-

+ 

 ; Set max core size rlimit.

 ; Possible Values: 'unlimited' or an integer greater or equal to 0

 ; Default Value: system defined value

 ;rlimit_core = 0

-

+ 

 ; Chroot to this directory at the start. This value must be defined as an

 ; absolute path. When this value is not set, chroot is not used.

 ; Note: you can prefix with '$prefix' to chroot to the pool prefix or one

 ; of its subdirectories. If the pool prefix is not set, the global prefix

 ; will be used instead.

-; Note: chrooting is a great security feature and should be used whenever

+; Note: chrooting is a great security feature and should be used whenever 

 ;       possible. However, all PHP paths will be relative to the chroot

 ;       (error_log, sessions.save_path, ...).

 ; Default Value: not set

-;chroot =

-

+;chroot = 

+ 

 ; Chdir to this directory at the start.

 ; Note: relative path can be used.

 ; Default Value: current directory or / when chroot

 ;chdir = /var/www

-

+ 

 ; Redirect worker stdout and stderr into main error log. If not set, stdout and

 ; stderr will be redirected to /dev/null according to FastCGI specs.

 ; Note: on highloaded environement, this can cause some delay in the page

@@ -493,7 +493,7 @@ pm.max_spare_servers = 3

 ; Note: set an empty value to allow all extensions.

 ; Default Value: .php

 ;security.limit_extensions = .php .php3 .php4 .php5

-

+ 

 ; Pass environment variables like LD_LIBRARY_PATH. All $VARIABLEs are taken from

 ; the current environment.

 ; Default Value: clean env

@@ -507,7 +507,7 @@ pm.max_spare_servers = 3

 ; overwrite the values previously defined in the php.ini. The directives are the

 ; same as the PHP SAPI:

 ;   php_value/php_flag             - you can set classic ini defines which can

-;                                    be overwritten from PHP call 'ini_set'.

+;                                    be overwritten from PHP call 'ini_set'. 

 ;   php_admin_value/php_admin_flag - these directives won't be overwritten by

 ;                                     PHP call 'ini_set'

 ; For php_*flag, valid values are on, off, 1, 0, true, false, yes or no.

-- 

1.9.3