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Best practices for in-app database migration for Sqlite

...ng stringWithFormat:@"userdata.sqlite"]; _database = [[FMDatabase alloc] initWithPath:[documentsDir stringByAppendingPathComponent:databaseName]]; _database.logsErrors = YES; if (![_database openWithFlags:SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE | SQLITE_OPEN_FILEPROTECTI...
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Array_merge versus + [duplicate]

... the matching elements from the right-hand array will be ignored. http://php.net/manual/en/language.operators.array.php array_merge() has slightly different behavior: If the input arrays have the same string keys, then the later value for that key will overwrite the previous one. If, however,...
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Advantages of Binary Search Trees over Hash Tables

... instance, if a hash function has a range R(h) = 0...100, then you need to allocate an array of 100 (pointers-to) elements, even if you are just hashing 20 elements. If you were to use a binary search tree to store the same information, you would only allocate as much space as you needed, as well as...
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What is the most accurate way to retrieve a user's correct IP address in PHP?

... fully-validated, and fully-packaged, version of @AlixAxel's answer: <?php /* Get the 'best known' client IP. */ if (!function_exists('getClientIP')) { function getClientIP() { if (isset($_SERVER["HTTP_CF_CONNECTING_IP"])) { ...
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HTML encoding issues - “” character showing up instead of “ ”

...ead of » , amd When Using this solution the problem solved but there is a php warning: Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at D:\Program Files\wamp\wamp\www\projects\kerala\kerala_public_html\edit\business_details.php:1) in D:\Program ...
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Is it a good practice to use an empty URL for a HTML form's action attribute? (action=“”)

...houldn't be a problem isn't it? At least I usually use the $_POST array in PHP only when processing forms. – Calmarius Mar 20 '15 at 18:45 ...
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PHP大潮将至 PHP近年发展分析 - 创意 - 清泛网 - 专注C/C++及内核技术

PHP大潮将至 PHP近年发展分析作者通过自己对PHP近年发展的分析,认为PHP凭借它的简单、开发快速和扩展性强,在企业级应用上会有大的发展前景。您觉得呢?说起PHP近几年的发展,可以说是突飞猛进。EDC在2006年的统计信息表明P...
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How to find the php.ini file used by the command line?

I need to enable pdo_mysql in my EasyPhp environment, so I went to php.ini file and uncommented the following line: 14 Answ...
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How to remove all leading zeroes in a string

... Not strange. Integers in php go up to 2^31, which is 2147483647. For any larger numbers, you'll have to use lonesomeday's string-based solution. – awm Feb 23 '11 at 23:41 ...
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How can I detect if the user is on localhost in PHP?

...y web application is on the server it resides on? If I remember correctly, PHPMyAdmin does something like this for security reasons. ...