note 23922 deleted from function.require by dams
| From: | dams@php.net | Date: | Fri, 02 Aug 2002 10:47:57 +0000 |
| Subject: | note 23922 deleted from function.require by dams | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-34138@lists.php.net to get a copy of this message | ||
When using a large number of require on the same file like when using a template that you have to
use multiple times you might find it faster to read the file into a string and then evaluate it.
In my example i am evaluating and requiring test2.php 1000 times. Eval was ALMOST always faster (10
- 100 times faster !).
test2.php:
<?
echo "<td>$x</td>";
?>
test.php:
<?
function getmicrotime(){
list($usec, $sec) = explode(" ",microtime());
return ((float)$usec + (float)$sec);
}
$times = 1000;
?>
Require test2.php <?=$times?> times.<br
>Starting loop...
<p>
<table><tr>
<?
$time_start = getmicrotime();
for($x=1; $x<=$times; $x++) {
require "test2.php";
}
$time = getmicrotime() - $time_start;
?>
</tr></table><br
>Ending loop... <?=$time?>
<br><br>
Evaluate test2.php <?=$times?> times.<br
>Starting loop...
<p>
<table><tr>
<?
$time_start = getmicrotime();
$filename = "test2.php";
$fd = fopen ($filename, "r");
$contents = fread ($fd, filesize ($filename));
fclose ($fd);
for($x=1; $x<=$times; $x++) {
eval("?>".$contents."<?");
}
$time = getmicrotime() - $time_start;
?>
</tr></table><br
>Ending loop... <?=$time?>
----------
As you can see i evaluated the contents of test2.php starting with ?> and ending with <?. This
way you can still run test2.php the normal way.
If you think i am making a huge mistake doing this, please let me know.