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Reference — What does this symbol mean in PHP?

... a collection of questions that come up every now and then about syntax in PHP. This is also a Community Wiki, so everyone is invited to participate in maintaining this list. ...
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Getter and Setter?

I'm not a PHP developer, so I'm wondering if in PHP is more popular to use explicit getter/setters, in a pure OOP style, with private fields (the way I like): ...
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Postgres: clear entire database before re-creating / re-populating from bash script

...ing them. (This will not drop the whole database, just each table/sequence/index/etc. before recreating them.) The above two would look something like this: pg_dump -U username --clean | pg_restore -U username share ...
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What is the difference between client-side and server-side programming?

... | | browser | | | web server | | (JavaScript) | | | (PHP etc.) | | | | | | +--------------+ | +--------------+ | client side | server side | <---------- HTML,...
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How do the PHP equality (== double equals) and identity (=== triple equals) comparison operators dif

What is the difference between == and === in PHP? 11 Answers 11 ...
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is_null($x) vs $x === null in PHP [duplicate]

PHP has two (that I know of, and three if you count isset() ) methods to determine if a value is null: is_null() and === null . I have heard, but not confirmed, that === null is faster, but in a code review someone strongly suggested that I use is_null() instead as it is specifically design...
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How can you search Google Programmatically Java API [closed]

...a offers java.net.URL and java.net.URLConnection to fire and handle HTTP requests. JSON can in Java be converted to a fullworthy Javabean object using an arbitrary Java JSON API. One of the best is Google Gson. Now do the math: public static void main(String[] args) throws Exception { String ...
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PHP expects T_PAAMAYIM_NEKUDOTAYIM?

...ember called $mouse, then foreach($cats as cat::$mouse) is perfectly valid php, but a statement with anything other than :: after the cat would be a syntax error. If $mouse were not a declared property of cat you would get a fatal error, but still not a syntax error. – chiliNUT...
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How to do parallel programming in Python?

... getting an error that says" Could not find a version that satisfies the requirement ray (from versions: ) No matching distribution found for ray" when trying to install the package in python – alwaysaskingquestions Feb 16 '18 at 18:09 ...
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Accept function as parameter in PHP

...en wondering whether is possible or not to pass a function as parameter in PHP; I want something like when you're programming in JS: ...