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Default visibility of class methods in PHP

...ithout any explicit visibility keyword are defined as public. http://www.php.net/manual/en/language.oop5.visibility.php share | improve this answer | follow ...
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How to properly URL encode a string in PHP?

...h page, where you type a search query and the form is submitted to search.php?query=your query . What PHP function is the best and that I should use for encoding/decoding the search query? ...
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MySQL: determine which database is selected?

After calling mysql_select_db to grab a database, is there any way to later output the name of the database that is currently selected? This seems very basic but I couldn't find anything on php.net or stackoverflow (all results are for "no database selected"). ...
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PHP - Move a file into a different folder on the server

I need to allow users on my website to delete their images off the server after they have uploaded them if they no longer want them. I was previously using the unlink function in PHP but have since been told that this can be quite risky and a security issue. (Previous code below:) ...
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PHP Fatal error: Cannot redeclare class

...x situation). The include_once tip helps to clarify an obscure feature of PHP. – DavidHyogo Mar 20 '13 at 2:12 2 ...
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string sanitizer for filename

...a whitelist of characters you are happy to be used? For example, you could allow just good ol' a-z, 0-9, _, and a single instance of a period (.). That's obviously more limiting than most filesystems, but should keep you safe. ...
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How do PHP sessions work? (not “how are they used?”)

...when his session is created. it is stored in a cookie (called, by default, PHPSESSID) that cookie is sent by the browser to the server with each request the server (PHP) uses that cookie, containing the session_id, to know which file corresponds to that user. The data in the sessions files is the ...
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Converting string to Date and DateTime

... Sadly, this answer has too many upvotes for anyone to pay attention. It's all copy paste these days. – N.B. Apr 3 '18 at 20:54  |  show 4 mor...
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How to do error logging in CodeIgniter (PHP)

... wouldn't be publicly accessible- but you'll never know. Make sure to have all of this precautions in place if you change the default application/logs directory. – Vincent Edward Gedaria Binua Jan 29 '15 at 2:56 ...
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Remove a string from the beginning of a string

... want, where you can limit your replace to part of your string: http://nl3.php.net/manual/en/function.substr-replace.php (This will enable you to only look at the beginning of the string.) You could use the count parameter of str_replace ( http://nl3.php.net/manual/en/function.str-replace.php ), th...