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php is null or empty?

I have a question regarding NULL in PHP: 9 Answers 9 ...
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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 ...
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Prevent direct access to a php include file

I have a php file which I will be using as exclusively as an include. Therefore I would like to throw an error instead of executing it when it's accessed directly by typing in the URL instead of being included. ...
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Difference between float and double in php?

... There is no difference in PHP. float, double or real are the same datatype. At the C level, everything is stored as a double. The real size is still platform-dependent. See the manual for more details: http://www.php.net/manual/en/language.types.flo...
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Getting a timestamp for today at midnight?

How would I go about getting a timestamp in php for today at midnight. Say it's monday 5PM and I want the Timestamp for Monday(today) at midnight(12 am) which already has happened. ...
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How do I compare two DateTime objects in PHP 5.2.8?

Having a look on the PHP documentation, the following two methods of the DateTime object would both seem to solve my problem: ...
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JavaScript equivalent of PHP's in_array()

... notice you wanted to see if an array was inside another. According to the PHP documentation this is the expected behavior of PHP's in_array: $a = array(array('p', 'h'), array('p', 'r'), 'o'); if (in_array(array('p', 'h'), $a)) { echo "'ph' was found\n"; } if (in_array(array('f', 'i'), $a)) {...
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How do I log errors and warnings into a file?

...ile, but to set up all of that within the script (not changing anything in php.ini)? 7 Answers ...
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How to clear APC cache entries?

...o clear all APC cache entries when I deploy a new version of the site. APC.php has a button for clearing all opcode caches, but I don't see buttons for clearing all User Entries, or all System Entries, or all Per-Directory Entries. ...
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Saving image from PHP URL

I need to save an image from a PHP URL to my PC. Let's say I have a page, http://example.com/image.php , holding a single "flower" image, nothing else. How can I save this image from the URL with a new name (using PHP)? ...