大约有 41,000 项符合查询结果（耗时：0.0355秒） [XML]
How to check if field is null or empty in MySQL?
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If you would like to check in PHP , then you should do something like :
$query_s =mysql_query("SELECT YOURROWNAME from `YOURTABLENAME` where name = $name");
$ertom=mysql_fetch_array($query_s);
if ('' !== $ertom['YOURROWNAME']) {
//do your action
ech...
MySQL Data - Best way to implement paging?
My iPhone app connects to my PHP web service to retrieve data from a MySQL database. A request can return 500 results.
7 An...
Best way to obfuscate an e-mail address on a website?
...V4YW1wbGUuY29t')">E-Mail</a>
Or dynamically server-side e.g. in PHP:
<a href="javascript:window.location.href=atob('<?= base64_encode("mailto:email@example.com") ?>')">E-Mail</a>
In combination with string reversion it could be pretty spam-save:
<a href="javascrip...
What is the optimal length for user password salt? [closed]
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Or even better owasp.org/index.php/Password_Storage_Cheat_Sheet
– Boris Treukhov
May 15 '14 at 20:35
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How do you increase the max number of concurrent connections in Apache?
...hive.org/web/20160415001028/http://www.genericarticles.com/mediawiki/index.php?title=How_to_optimize_apache_web_server_for_maximum_concurrent_connections_or_increase_max_clients_in_apache
ServerLimit 16
StartServers 2
MaxClients 200
MinSpareThreads 25
MaxSpareThreads 75
ThreadsPerChild 25
First o...
Should I use the datetime or timestamp data type in MySQL?
...my_datetime)") when you query the record if you want to operate on it with PHP.
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How many files can I put in a directory?
...d for storing thumbnails and on a Linux server.
Listed files via FTP or a php function is slow yes, but there is also a performance hit on displaying the file. e.g. www.website.com/thumbdir/gh3hg4h2b4h234b3h2.jpg has a wait time of 200-400 ms. As a comparison on another site I have with a around 10...
Character Limit in HTML
... to win. That's why it's far better to check it on the server side, with a PHP / Python / whatever script.
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What's faster, SELECT DISTINCT or GROUP BY in MySQL?
...y i) a;
count
10001
(1 row)
Time: 594,481 ms
http://www.pgsql.cz/index.php/PostgreSQL_SQL_Tricks_I
so be careful ... :)
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Installing specific laravel version with composer create-project
...efer-dist laravel/laravel Projectname "6.*"
Run Local Development Server
php artisan serve
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