PHP获取MySQL执行sql语句的查询时间

PHP获取MySQL执行sql语句的查询时间

1.

$t1

=microtime(true);

mysql_query(

$sql

);

echo

microtime(true)-

$t1

;

2.

//计时开始
runtime();

//执行查询
mysql_query($sql);

//计时结束.
echo runtime(1);

//计时函数
function runtime($mode=0) {
static $t;
if(!$mode) {
$t = microtime();
return;
}
$t1 = microtime();
list($m0,$s0) = split(" ",$t);
list($m1,$s1) = split(" ",$t1);
return sprintf("%.3f ms",($s1+$m1-$s0-$m0)*1000);
}