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Centering a background image, using CSS
...;
That should work.
If not, why not make a div with the image and use z-index to make it the background? This would be much easier to center than a background image on the body.
Other than that try:
background-position: 0 100px;/*use a pixel value that will center it*/ Or I think you can use 50...
Select Last Row in the Table
...t(); Order by date works longer because date is string and most likely not indexed. While primary key is indexed and works super fast. Even if created_at indexed, it is indexed string and not INT in case of primary. Index string has less performance.
– KorbenDallas
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What is the best way to prevent session hijacking?
Specifically this is regarding when using a client session cookie to identify a session on the server.
12 Answers
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How to remove .html from URL?
...ith this code and I fixed it putting: Options +FollowSymLinks -MultiViews -Indexes at the very top.
– Labanino
Feb 13 '14 at 13:10
1
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When should I use a composite index?
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You should use a composite index when you are using queries that benefit from it. A composite index that looks like this:
index( column_A, column_B, column_C )
will benefit a query that uses those fields for joining, filtering, and sometimes selecti...
How to replace a string in multiple files in linux command line
... I just did this in my git repo and now git status returns: error: bad index file sha1 signature.... fatal: index file corrupt. What gives?
– Jin
Feb 2 '18 at 20:51
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PHP calculate age
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This works fine.
<?php
//date in mm/dd/yyyy format; or it can be in other formats as well
$birthDate = "12/17/1983";
//explode the date to get month, day and year
$birthDate = explode("/", $birthDate);
//get age from date or birthdate...
HTML-encoding lost when attribute read from input field
...ound this implementation of a replaceAll method:
http://dumpsite.com/forum/index.php?topic=4.msg29#msg29
(also referenced here: Fastest method to replace all instances of a character in a string)
Some performance results here:
http://jsperf.com/htmlencoderegex/25
It gives identical result string to...
How to check what user php is running as?
I need to detect if php is running as nobody. How do I do this?
16 Answers
16
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PHP完美实现GIF动画缩略图 - 更多技术 - 清泛网 - 专注C/C++及内核技术
PHP完美实现GIF动画缩略图缩略图是个很常用的功能。它的实现并不复杂，但如果原图是GIF动画的话，问题就会变得繁琐一点，下面通过一个取自CS警匪游戏的GIF动画来说明...缩略图是个很常用的功能。它的实现并不复杂，但如果...