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Getting the first character of a string with $str[0]

...am just not sure whether this is 'good practice', as that notation is generally used with arrays. This feature doesn't seem to be very well documented so I'm turning to you guys to tell me if it's all right – in all respects – to use this notation? ...
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Are PHP include paths relative to the file or the calling code?

...e location of A.PHP? That is, does it matter which file the include is called from, or only what the current working directory is- and what determines the current working directory? ...
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Check if $_POST exists

...sts and if it does, print it inside another string, if not, don't print at all. 14 Answers ...
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Simplest two-way encryption using PHP

What is the simplest way of doing two way encryption in common PHP installs? 6 Answers ...
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What is the canonical way to determine commandline vs. http execution of a PHP script?

... @Bobby, the example in the php.net docs actually matches both "cgi" and "cgi-fcgi" by just looking at the first three characters of the string ... that's why and it actually makes sense. If anything it's just to get back @hop for calling php no language for serious pro...
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Check if PHP session has already started

I have a PHP file that is sometimes called from a page that has started a session and sometimes from a page that doesn't have session started. Therefore when I have session_start() on this script I sometimes get the error message for "session already started". For that I've put these lines: ...
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How do I use PHP namespaces with autoload?

... $class parameter of autoload is the class name as written in constructor call. – tishma Feb 6 '13 at 12:29 1 ...
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What does the PHP error message “Notice: Use of undefined constant” mean?

...l_escape_string($_POST['message']); As is, it was looking for constants called department, name, email, message, etc. When it doesn't find such a constant, PHP (bizarrely) interprets it as a string ('department', etc). Obviously, this can easily break if you do defined such a constant later (tho...
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Get name of caller function in PHP?

Is there a PHP function to find out the name of the caller function in a given function? 12 Answers ...
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Test PHP headers with PHPUnit

...78 Error: Class 'PHPUnit_Util_Configuration' not found in - on line 378 Call Stack: 0.0013 582512 1. {main}() -:0 Try add this to your bootstrap file to fix it: <?php if (!defined('PHPUNIT_COMPOSER_INSTALL')) { define('PHPUNIT_COMPOSER_INSTALL', __DIR__ . '/path/to/composer/ven...