Organizational Research By

Surprising Reserch Topic

is there a speed difference between php echo var and var using -'php,syntax,php-shorttags'


is there a speed difference between php echo var and var  using -'php,syntax,php-shorttags'

asked Sep 8, 2015 by rajesh
0 votes
7 views



Related Hot Questions

7 Answers

0 votes
Performance difference is insignificant. Moreover, with use of APC, performance difference is zero, null, nada. <?=$var?> requires short tags activated. Short tags are problematic within XML, because <? is also markup for XML processing tag. So if you're writing code that should be portable, use the long form. See short_open_tag description in http://www.php.net/manual/en/ini.core.php
answered Sep 8, 2015 by rajesh
0 votes
Technically the parser has to parse every character of the longer version, and there's a few more characters for every transfer. If your webserver doesn't "pre-compile" (ie: cache tokenized PHP pages) then there is a slight performance difference. This should be insignificant except, perhaps, when you start talking about billions of runs.
answered Sep 8, 2015 by rajesh
0 votes
I think the second one requires the short_open_tag (in PHP.ini) to be set to true. Meaning there is a chance it's turned off on some webservers.
answered Sep 8, 2015 by rajesh
0 votes
in php 5.3 short tag ASP-style <% %> support will be deprecated, try to avoid this and rewrite the code to the '<?php echo' format, because u cant use <?xml ?> inline for example.
answered Sep 8, 2015 by rajesh
0 votes
Which do you recommend Neither, unless you really want to allow HTML injection. (99% of the time, you don't.) <?php echo htmlspecialchars($var); ?> Or define a function that does echo(htmlspecialchars($arg)) with a shorter name to avoid all that typing.
answered Sep 8, 2015 by rajesh
0 votes
Don't try to optimize with these, it's useless. Instead, deactivate allow_short_tags (because of problems when loading XML files) and write clean, readable and understandable code. Even if there may be a slight difference (which is definitely lower than 10%), it's useles to optimize with it. If your scripts are slow, look at your loops first. Most of the time you can win a lot more performance by optimizing the programms flow than by using strange syntax.
answered Sep 8, 2015 by rajesh
0 votes
The speed difference depends on how fast you can type those 9 extra characters. It can also improve the readability of your code, but this is debatable. If your talking about execution-speed there is no noticable difference.
answered Sep 8, 2015 by rajesh

...