PHP debug用，印出各行之間執行時間

<?php

$pm_time = microtime(true);

echo "[pass time(".__LINE__.")]: ". number_format(microtime(true) - $pm_time, '4') ."<br>\n"; $pm_time = microtime(true);

echo "[pass time(".__LINE__.")]: ". number_format(microtime(true) - $pm_time, '4') ."<br>\n"; $pm_time = microtime(true);

echo "[pass time(".__LINE__.")]: ". number_format(microtime(true) - $pm_time, '4') ."<br>\n"; $pm_time = microtime(true);

...

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