/**

*?debuging('dtrace');?//查看調用棧

*?debuging($var);?//打印$var(var_dump)

*?debuging($var,?'php');?//打印$var(var_export)

*?debuging($var,?$echo,?2);?//以json格式輸出$var

*?debuging(__LINE__.__CLASS);//常用于大量if語句體定位,?或者尋找程序結束點

*/

function?debuging($var?=?'',?$echo?=?'',?$die?=?false,?$force?=?false)?{

static?$clear;

if?(0?&&?$clear?===?null)?{

ob_end_flush?();

$clear?=?true;

}

static?$d;

if?(0?&&?empty?(?$d?))?{

$d?=?1;

debuging?(?'dtrace'?);

}

$force?&&?$_GET?['debug']?=?1;

if?(isset?(?$_GET?['debug']?))?{

if?('dtrace'?===?$var)?{

dTrace?(?$die?);

}?elseif?($die?===?2)?{

header?(?'Content-type:?application/json'?);

echo?json_encode?(?$var?);

}?else?{

echo?"

\n";

if?($echo)?{

echo?"$echo:";

}

if?($echo?===?'php')

var_export?(?$var?);

else

var_dump?(?$var?);

echo?"

\n";

}

$die?&&?die?();

}

}

function?dTrace($die?=?false)?{

try?{

static?$lastTime;

$lastTime?or?$lastTime?=?$_SERVER?['REQUEST_TIME'];

throw?new?Exception?();

}?catch?(?Exception?$e?)?{

$currTime?=?microtime?(?true?);

$totalTime?=?$currTime?-?$_SERVER?['REQUEST_TIME'];

$execTime?=?$currTime?-?$lastTime;

$lastTime?=?$currTime;

echo?"\n

---

\n";

echo?"execTime:?$execTime?s.
\n";

echo?"totalTime:?$totalTime?s.
\n";

echo?"Trace:
\n";

//?echo?$e->getTraceAsString()?;

//?debug_print_backtrace();$die?&&?die;

debuging?(?$e->getTraceAsString?(),?'php',?$die?);

}

}

for($i=0;$i<100000;$i++)?{

$a?+=$i;

}

dTrace();

總結

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