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What does “=>” mean in PHP?

...ach statements. The '=>' links the key and the value. According to the PHP Manual, the '=>' created key/value pairs. Also, Equal or Greater than is the opposite way: '>='. In PHP the greater or less than sign always goes first: '>=', '<='. And just as a side note, excluding the sec...
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GCM with PHP (Google Cloud Messaging)

How can I integrate the new Google Cloud Messaging in a PHP backend? 13 Answers 13 ...
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How to check whether mod_rewrite is enable on server?

... To check if mod_rewrite module is enabled, create a new php file in your root folder of your WAMP server. Enter the following phpinfo(); Access your created file from your browser. CtrlF to open a search. Search for 'mod_rewrite'. If it is enabled you see it as 'Loaded Modules' I...
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How to make asynchronous HTTP requests in PHP

Is there a way in PHP to make asynchronous HTTP calls? I don't care about the response, I just want to do something like file_get_contents() , but not wait for the request to finish before executing the rest of my code. This would be super useful for setting off "events" of a sort in my application...
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Writing a new line to file in PHP (line feed)

... Use PHP_EOL which outputs \r\n or \n depending on the OS. share | improve this answer | follow ...
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How to check if a string starts with a specified string? [duplicate]

...-thread cache of compiled regular expressions (up to 4096). http://www.php.net/manual/en/intro.pcre.php share | improve this answer | follow | ...
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How to validate an email address using a regular expression?

...e more sophisticated patterns in Perl and PCRE (regex library used e.g. in PHP) can correctly parse RFC 5322 without a hitch. Python and C# can do that too, but they use a different syntax from those first two. However, if you are forced to use one of the many less powerful pattern-matching language...
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What generates the “text file busy” message in Unix?

... If trying to build phpredis on a Linux box you might need to give it time to complete modifying the file permissions, with a sleep command, before running the file: chmod a+x /usr/bin/php/scripts/phpize \ && sleep 1 \ && /u...
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How does RewriteBase work in .htaccess

...hs in the rule's target. So say you have this rule: RewriteRule ^foo$ bar.php [L] The bar.php is a relative path, as opposed to: RewriteRule ^foo$ /bar.php [L] where the /bar.php is an absolute path. The absolute path will always be the "root" (in the directory structure above). That means tha...
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Show a number to two decimal places

What's the correct way to round a PHP string to two decimal places? 24 Answers 24 ...