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file_put_contents - failed to open stream: Permission denied

... the folder sudo chown -R www-data:www-data /var/www that should make file_put_contents work now. But for more security you better also set the permissions like below find /var/www -type d -print0 | xargs -0 chmod 0755 # folder find /var/www -type f -print0 | xargs -0 chmod 0644 # files change /v...
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How to cast List to List

...n also upcast to (List) instead of to (Object). – 200_success Feb 15 '16 at 11:12 add a comme...
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How to fix java.net.SocketException: Broken pipe?

... In the following case, I create a Socket server that listen at TCP port 10_000 and accept max 200 pending sockets. new Thread(() -> { try (ServerSocket serverSocket = new ServerSocket(10_000, 200)) { logger.info("Server starts listening on TCP port {}", port); while (true...
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Android Writing Logs to text File

... Don't forget to add permission for writing_external_storage in Manifest! – virusss8 Jan 18 '12 at 20:16 ...
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Xcode stuck at “Your application is being uploaded”

...rom apple download center: http://support.apple.com/kb/DL1572?viewlocale=en_US If this still doesn't help then follow this third method: This method enables the application loader to use the HTTP port instead of HTTPS. Go to Application Loader java folder : /Applications/Xcode.app/Contents/Applicat...
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What is the difference between tree depth and height?

... about to add quote with same content from here: en.wikipedia.org/wiki/Tree_%28data_structure%29 – Péter Török Apr 8 '10 at 21:53 2 ...
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VS 2010 Test Runner error “The agent process was stopped while the test was running.”

... 'QTAgent32.exe' (Managed (v4.0.30319)): Loaded 'C:\TestResults\bdewey_XXXXXX072 2011-01-11 17_00_40\Out\MyCode.dll', Symbols loaded. E, 9024, 9, 2011/01/11, 17:00:46.827, XXXXX072\QTAgent32.exe, Unhandled Exception Caught, reporting through Watson: [Exception message] In my ca...
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Finding index of character in Swift String

... 1.x) to get the number of characters. That also applies to positions. The _position is probably an index into the raw array of bytes and they don't want to expose that. The String.Index is meant to protect us from accessing bytes in the middle of characters. That means that any index you get must ...
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What is a JavaBean exactly?

...primitive type or an instance of a class? – kingfrito_5005 Nov 29 '16 at 15:35 8 @kingfrito_5005:...
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Java URL encoding of query string parameters

... url = "https://example.com?q=" + URLEncoder.encode(q, StandardCharsets.UTF_8); When you're still not on Java 10 or newer, then use StandardCharsets.UTF_8.toString() as charset argument, or when you're still not on Java 7 or newer, then use "UTF-8". Note that spaces in query parameters are represe...