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What is the difference between self::$bar and static::$bar in PHP?

...keyword. In this case, your Foo class defines a protected static property called $bar. When you use self in the Foo class to refer to the property, you're referencing the same class. Therefore if you tried to use self::$bar elsewhere in your Foo class but you had a Bar class with a different value ...
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Regex lookahead, lookbehind and atomic groups

...ely follow, and stop as backtracking is disabled A non-atomic group will allow backtracking; if subsequent matching ahead fails, it will backtrack and use alternative patterns until a match for the entire expression is found or all possibilities are exhausted. (foo|foot)s applied to foots will: ...
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How do I immediately execute an anonymous function in PHP?

... For PHP7: see Yasuo Ohgaki's answer: (function() {echo 'Hi';})(); For previous versions: the only way to execute them immediately I can think of is call_user_func(function() { echo 'executed'; }); ...
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Checking to see if one array's elements are in another array in PHP

I have two arrays in PHP as follows: 7 Answers 7 ...
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py2exe - generate single executable file

... PyInstaller will create a single .exe file with no dependencies; use the --onefile option. It does this by packing all the needed shared libs into the executable, and unpacking them before it runs, just as you describe (EDIT: py2ex...
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Building an MFC project for a non-Unicode character set is deprecated ...

... project for a non-Unicode character set is deprecatedVS2013多字节工程问题使用VS2013编译旧版VC++程序时,提示Building an MFC project for a non-Unicode character set is depreca...VS2013多字节工程问题 使用VS2013编译旧版VC++程序时,提示Building an MFC project for a...
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PHP - How to check if a string contains a specific text [duplicate]

... Use the strpos function: http://php.net/manual/en/function.strpos.php $haystack = "foo bar baz"; $needle = "bar"; if( strpos( $haystack, $needle ) !== false) { echo "\"bar\" exists in the haystack variable"; } In your case: if( strpos( $a, 'some ...
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How to get the first word of a sentence in PHP?

... Using modern PHP syntax you can just do explode(' ',trim($myvalue))[0] – Elly Post Apr 1 '16 at 6:28 2 ...
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Chain-calling parent initialisers in python [duplicate]

... B inheriting from A, class C inheriting from B. What is a generic way to call a parent class initialiser in an initialiser? If this still sounds too vague, here's some code. ...
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How to send a GET request from PHP?

I'm planning to use PHP for a simple requirement. I need to download a XML content from a URL, for which I need to send HTTP GET request to that URL. ...