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PHP Session Security

What are some guidelines for maintaining responsible session security with PHP? There's information all over the web and it's about time it all landed in one place! ...
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Getting the first character of a string with $str[0]

... Does PHP $str[0] take into account that there can be 2Byte long chars? UTF and such? (even though substr() does not help with it either!) – Tomer W Jun 26 '13 at 13:29 ...
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How do I log errors and warnings into a file?

...ile, but to set up all of that within the script (not changing anything in php.ini)? 7 Answers ...
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Get the client IP address using PHP [duplicate]

I want to get the client IP address who uses my website. I am using the PHP $_SERVER superglobal: 5 Answers ...
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How to resolve “must be an instance of string, string given” prior to PHP 7?

... Prior to PHP 7 type hinting can only be used to force the types of objects and arrays. Scalar types are not type-hintable. In this case an object of the class string is expected, but you're giving it a (scalar) string. The error messa...
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PHP check whether property exists in object or class

I understand PHP does not have a pure object variable, but I want to check whether a property is in the given object or class. ...
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PDO closing connection

... According to documentation you're correct (http://php.net/manual/en/pdo.connections.php): The connection remains active for the lifetime of that PDO object. To close the connection, you need to destroy the object by ensuring that all remaining references to it are de...
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Using PHP with Socket.io

Is it possible to use Sockets.io on the client side and communicate with a PHP based application on the server? Does PHP even support such a 'long-lived connection' way of writing code? ...
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Prevent direct access to a php include file

I have a php file which I will be using as exclusively as an include. Therefore I would like to throw an error instead of executing it when it's accessed directly by typing in the URL instead of being included. ...
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file_get_contents(“php://input”) or $HTTP_RAW_POST_DATA, which one is better to get the body of JSON

file_get_contents("php://input") or $HTTP_RAW_POST_DATA - which one is better to get the body of JSON request? 6 Answers...