// 定义全局变量 记录时间 $_timer_id = 0; // 函数设置全局变量 记录各个断点的运行所需时间 function makeTimer( $notes, $onOff=FALSE ) { if( $onOff ) { global $_timer_id; $GLOBALS['timer'][$_timer_id][0] = microtime(TRUE); $GLOBALS['timer'][$_timer_id][1] = $notes; $_timer_id++; } } // 把全局运行时间情况输出 function traceTimer() { $timer_str = ''; $G_timer = count($GLOBALS['timer'])-1; if( $G_timer>0 ) { for( $i=0;$i<$G_timer;$i++ ) { $dif_time = number_format( ($GLOBALS['timer'][$i+1][0] - $GLOBALS['timer'][$i][0]), 3 ); $timer_str .= 'dif: '.$dif_time.' '.$GLOBALS['timer'][$i][1]."\n"; } $dif_time = number_format( (microtime(TRUE) - $GLOBALS['timer'][$G_timer][0]), 3 ); $timer_str .= 'dif: '.$dif_time.' '.$GLOBALS['timer'][$G_timer][1]."\n"; } return $timer_str; } 使用方法： // 开始时间 makeTimer( ' LINE:'.__LINE__ ); $imgstrpos = strpos($str, '<img'.$imgstr); makeTimer( ' LINE:'.__LINE__ ); $str_p = substr($str_noimg, 0, $imgstrpos); makeTimer( ' LINE:'.__LINE__ ); $str_n = substr($str_noimg, $imgstrpos, strlen($str_noimg)); makeTimer( ' LINE:'.__LINE__ ); $pst_exc_imgs = $str_p.'<img '.$imgstr.'>'.$str_n." "; makeTimer( ' LINE:'.__LINE__ ); // 记录到日志中 error_log( traceTimer(), 3, '/tmp/'.basename(__FILE__).'.log' ); // 或者直接输出 echo traceTimer();