我正在尝试将慢速查询记录到我的数据库类中,但我得到了奇怪的结果。它目前正在记录“大部分”所有查询,它说大多数查询大约需要 0.8 秒才能运行,我不明白,因为这是在我的开发人员机器上,它没有承受重负载。
见鬼,我什至尝试在 phpMyAdmin 中运行查询, 他们在那里非常快。
我放错地方了吗?还是我错过了什么?
class database {
protected $_mysqli;
protected $_debug;
public function __construct($host, $username, $password, $database, $debug) {
$this->_mysqli = new mysqli($host, $username, $password, $database);
$this->_debug = (bool) $debug;
if (mysqli_connect_errno()) {
if ($this->_debug) {
echo mysqli_connect_error();
debug_print_backtrace();
}
return false;
}
return true;
}
public function q($query) {
$incomingq = $query;
if ($query = $this->_mysqli->prepare($query)) {
if (func_num_args() > 1) {
$x = func_get_args();
$args = array_merge(array(func_get_arg(1)),
array_slice($x, 2));
$args_ref = array();
foreach($args as $k => &$arg) {
$args_ref[$k] = &$arg;
}
call_user_func_array(array($query, 'bind_param'), $args_ref);
}
// Settings
$SLOW_LOG_TIME = 0.8; // (sec)
$SLOW_LOG_FILE = 'php_slow.txt';
$SLOW_LOG_START = time(); // (sec)
$query->execute();
// Logging
$SLOW_LOG_END = microtime(TRUE);
$time = $SLOW_LOG_END - $SLOW_LOG_START;
if ($time > $SLOW_LOG_TIME)
{
$log = date('Y-m-d H:i:s') . "\t" . round($time, 3) . "\t" . $_SERVER['SERVER_NAME'] . $_SERVER['REQUEST_URI'] . "\t" . str_replace(array("\t" , "\n"), "", $incomingq) . "\r\n";
$fp = fopen($SLOW_LOG_FILE, 'a+');
fwrite($fp, $log);
fclose($fp);
}
if ($query->errno) {
if ($this->_debug) {
echo mysqli_error($this->_mysqli);
debug_print_backtrace();
}
return false;
}
if ($query->affected_rows > -1) {
// if ($query->sqlstate == "00000") {
return $query->affected_rows;
}
$params = array();
$meta = $query->result_metadata();
while ($field = $meta->fetch_field()) {
$params[] = &$row[$field->name];
}
call_user_func_array(array($query, 'bind_result'), $params);
$result = array();
while ($query->fetch()) {
$r = array();
foreach ($row as $key => $val) {
$r[$key] = $val;
}
$result[] = $r;
}
$query->close();
return $result;
}
else {
if ($this->_debug) {
echo $this->_mysqli->error;
debug_print_backtrace();
}
return false;
}
}
public function handle() {
return $this->_mysqli;
}
public function last_insert_id()
{
return $this->_mysqli->insert_id;
}
}
最佳答案
您为此使用了错误的测量单位:$SLOW_LOG_START = time();
,
time() 是秒。
应该和$SLOW_LOG_END = microtime(TRUE);
保持一致。
而 microtime(TRUE) 的单位是微秒。
因此,更改 $SLOW_LOG_START = microtime(TRUE);
关于php - 如何记录查询执行时间?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/8474682/