function timer_start() {
global $timestart;
$mtime = explode( ' ', microtime() );
$timestart = $mtime[1] + $mtime[0];
return true;
}
timer_start();
function timer_stop( $display = 0, $precision = 3 ) {

global $timestart, $timeend;

$mtime = explode( ' ', microtime() );

$timeend = $mtime[1] + $mtime[

在需要的地方直接调用一下代码

<?php echo timer_stop(); ?>

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