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isset() and empty() - what to use

... $var; (a variable declared, but without a value in a class) From http://php.net/manual/en/function.empty.php As mentioned in the comments the lack of warning is also important with empty() PHP Manual says empty() is the opposite of (boolean) var, except that no warning is generated when...
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How do you connect to multiple MySQL databases on a single webpage?

...a few databases and want to put all the information onto one webpage using PHP. I was wondering how I can connect to multiple databases on a single PHP webpage. ...
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Formatting code snippets for blogging on Blogger [closed]

...ript src='http://syntaxhighlighter.googlecode.com/svn/trunk/Scripts/shBrushPhp.js' type='text/javascript'></script> <script src='http://syntaxhighlighter.googlecode.com/svn/trunk/Scripts/shBrushPython.js' type='text/javascript'></script> <script src='http://syntaxhighlighter....
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How can I use PHP to dynamically publish an ical file to be read by Google Calendar?

Any Google search on PHP ical just brings up phpicalendar and how to parse or read IN ical files. I just want to write a PHP file that pulls events from my database and writes them out in ical format. ...
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phpmyadmin logs out after 1440 secs

In my local development Ubuntu box I use MySQL and phpmyadmin to work with the database. 24 Answers ...
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PHP - Check if two arrays are equal

... in different order, using $a == $b or $a === $b fails, for example: <?php (array("x","y") == array("y","x")) === false; ?> That is because the above means: array(0 => "x", 1 => "y") vs. array(0 => "y", 1 => "x"). To solve that issue, use: <?php function array_equal($a...
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Limit file format when using ?

...MIME-type using both the file extension and its binary signature (ASP.NET, PHP, Ruby, Java). You might also want to refer to these tables for file types and their magic numbers, to perform a more robust server-side verification. Here are three good reads on file-uploads and security. EDIT: Maybe fi...
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PHP Sort a multidimensional array by element containing date

...compare")), so that usort() knows it's a class function/method. See also: php.net/manual/en/… – Ferdinand Beyer May 26 '10 at 16:26 ...
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Convert a date format in PHP

...totime($originalDate)); (See the strtotime and date documentation on the PHP site.) Note that this was a quick solution to the original question. For more extensive conversions, you should really be using the DateTime class to parse and format :-) ...
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How to use a switch case 'or' in PHP

Is there a way of using an 'OR' operator or equivalent in a PHP switch? 10 Answers 10 ...