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);echomicrotime(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); }