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mysqlnd persistent connection problem
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[ec2-user@test test]$ git diff | |
diff --git a/mysql3.php b/mysql3.php | |
index a4f6a8a..0e277f0 100644 | |
--- a/mysql3.php | |
+++ b/mysql3.php | |
@@ -11,8 +11,8 @@ define('MY_TBL', 'sample'); | |
function _check() { | |
$link = mysqli_init(); | |
- $ret1 = mysqli_options($link, MYSQLI_OPT_INT_AND_FLOAT_NATIVE, TRUE); | |
$ret2 = mysqli_real_connect($link, 'p:' . MY_HOST, MY_USER, MY_PASS); | |
+ $ret1 = mysqli_options($link, MYSQLI_OPT_INT_AND_FLOAT_NATIVE, TRUE); | |
$ret3 = mysqli_select_db($link, MY_DB); | |
printf("ret1[%s]ret2[%s]ret3[%s]\n", $ret1, $ret2, $ret3); | |
$ret = mysqli_query($link, 'select id,name, age from ' . MY_DB); | |
[ec2-user@test test]$ php74 ./mysql3.php | |
1st time | |
ret1[1]ret2[1]ret3[1] | |
array(3) { | |
["id"]=> | |
int(1) | |
["name"]=> | |
string(4) "john" | |
["age"]=> | |
int(20) | |
} | |
2nd time | |
ret1[1]ret2[1]ret3[1] | |
array(3) { | |
["id"]=> | |
int(1) | |
["name"]=> | |
string(4) "john" | |
["age"]=> | |
int(20) | |
} | |
3rd time | |
ret1[1]ret2[1]ret3[1] | |
array(3) { | |
["id"]=> | |
int(1) | |
["name"]=> | |
string(4) "john" | |
["age"]=> | |
int(20) | |
} |
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[ec2-user@test test]$ php74 -v | |
PHP 7.4.12 (cli) (built: Oct 27 2020 15:01:52) ( NTS ) | |
Copyright (c) The PHP Group | |
Zend Engine v3.4.0, Copyright (c) Zend Technologies | |
[ec2-user@test ~]$ php74 --ri mysqli | |
mysqli | |
MysqlI Support => enabled | |
Client API library version => mysqlnd 7.4.12 | |
Active Persistent Links => 0 | |
Inactive Persistent Links => 0 | |
Active Links => 0 | |
Directive => Local Value => Master Value | |
mysqli.max_links => Unlimited => Unlimited | |
mysqli.max_persistent => Unlimited => Unlimited | |
mysqli.allow_persistent => On => On | |
mysqli.rollback_on_cached_plink => Off => Off | |
mysqli.default_host => no value => no value | |
mysqli.default_user => no value => no value | |
mysqli.default_pw => no value => no value | |
mysqli.default_port => 3306 => 3306 | |
mysqli.default_socket => /var/lib/mysql/mysql.sock => /var/lib/mysql/mysql.sock | |
mysqli.reconnect => Off => Off | |
mysqli.allow_local_infile => Off => Off | |
[ec2-user@test test]$ php74 ./mysql3.php | |
1st time | |
ret1[1]ret2[1]ret3[1] | |
array(3) { | |
["id"]=> | |
int(1) | |
["name"]=> | |
string(4) "john" | |
["age"]=> | |
int(20) | |
} | |
2nd time | |
ret1[1]ret2[1]ret3[1] | |
array(3) { | |
["id"]=> | |
int(1) | |
["name"]=> | |
string(4) "john" | |
["age"]=> | |
int(20) | |
} | |
3rd time | |
ret1[1]ret2[1]ret3[1] | |
array(3) { | |
["id"]=> | |
string(1) "1" | |
["name"]=> | |
string(4) "john" | |
["age"]=> | |
string(2) "20" | |
} |
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<?php | |
header('Content-type: text/plain'); | |
ini_set( 'display_errors', 1 ); | |
ini_set('error_reporting', E_ALL); | |
define('MY_HOST', '127.0.0.1'); | |
define('MY_USER', 'user'); | |
define('MY_PASS', 'password'); | |
define('MY_DB', 'sample'); | |
define('MY_TBL', 'sample'); | |
function _check() { | |
$link = mysqli_init(); | |
$ret1 = mysqli_options($link, MYSQLI_OPT_INT_AND_FLOAT_NATIVE, TRUE); | |
$ret2 = mysqli_real_connect($link, 'p:' . MY_HOST, MY_USER, MY_PASS); | |
$ret3 = mysqli_select_db($link, MY_DB); | |
printf("ret1[%s]ret2[%s]ret3[%s]\n", $ret1, $ret2, $ret3); | |
$ret = mysqli_query($link, 'select id,name, age from ' . MY_DB); | |
$row = mysqli_fetch_array($ret, MYSQLI_ASSOC); | |
var_dump($row); | |
} | |
echo '1st time' . PHP_EOL; | |
_check(); | |
echo '2nd time' . PHP_EOL; | |
_check(); | |
// kill connection. emulate wait_timeout exceeded | |
$cmd = sprintf('mysql -u%s -p%s -h%s -D%s -e"show processlist;"', MY_USER, MY_PASS, MY_HOST, MY_DB); | |
$cmd_ret = `$cmd | grep Sleep | awk '{print $1}'`; | |
$pids = array_filter(explode("\n", $cmd_ret), 'strlen'); | |
#var_dump([$cmd_ret, $pids]); | |
foreach ($pids as $pid) { | |
$cmd = sprintf('mysql -u%s -p%s -h%s -D%s -e"kill %s"', MY_USER, MY_PASS, MY_HOST, MY_DB, $pid); | |
`$cmd`; | |
} | |
echo '3rd time' . PHP_EOL; | |
_check(); |
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drop database if exists sample; | |
create database sample default character set utf8 collate utf8_general_ci; | |
create table sample.sample( | |
id int not null auto_increment, | |
name varchar(32) not null, | |
age int not null default 0, | |
primary key(id) | |
); | |
insert into sample.sample(name, age) values ('john', 20), ('jane', 21); |
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