我有两页:
index.php文件:
<?php
$mtime = microtime();
$mtime = explode(" ",$mtime);
$mtime = $mtime[1] + $mtime[0];
$starttime = $mtime;
$text = '
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
</head>
<body>
html content
</body>
</html>';
echo $text;
$mtime = microtime();
$mtime = explode(" ",$mtime);
$mtime = $mtime[1] + $mtime[0];
$endtime = $mtime;
$totaltime = ($endtime - $starttime);
echo "This page was created in ".$totaltime." seconds";
?>
和index2.php:
<?php
$mtime = microtime();
$mtime = explode(" ",$mtime);
$mtime = $mtime[1] + $mtime[0];
$starttime = $mtime;
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
</head>
<body>
<?php echo 'html content'; ?>
</body>
</html>
<?php
$mtime = microtime();
$mtime = explode(" ",$mtime);
$mtime = $mtime[1] + $mtime[0];
$endtime = $mtime;
$totaltime = ($endtime - $starttime);
echo "This page was created in ".$totaltime." seconds";
?>
index.php的测试结果:
html content This page was created in 6.1988830566406E-5 seconds
对于index2.php:
html contentThis page was created in 6.4849853515625E-5 seconds
为什么HTML嵌入PHP比index2.php更快？
Joh*_*ker 10
这不是一个真正的答案,但我不禁要问你为什么认为这很重要？(如果你担心将事情优化到这个级别,那么我怀疑PHP可能不是理想的语言.)
从本质上讲,代码易读性,一致性以及任何有助于长期维护的方法都比这种微优化更重要,如果您遇到性能问题,我很乐意将大量资金放在它赢得的事实上无论如何输出HTML /是否弹出PHP代码都会阻塞很多东西.
因此,如果您遇到性能问题,请分析代码以找出问题所在 - 不要浪费时间担心什么是"最佳" - 在这种情况下,"最佳"解决方案对于程序员来说是最简单的(s) )从事该项目.