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Why does PHP consider 0 to be equal to a string?
...n each string is converted to a number and the comparison performed numerically. […] The type conversion does not take place when the comparison is === or !== as this involves comparing the type as well as the value.
As the first operand is a number (0) and the second is a string ('e'), the stri...
When to Redis? When to MongoDB? [closed]
... and MongoDB. I know they are different; the performance and the API is totally different.
10 Answers
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Laravel requires the Mcrypt PHP extension
...e to include the actual path to your PHP. Something like this (I don't actually use OSX so this might not be 100%):
export PATH=/usr/local/php5/bin:$PATH
Ubuntu
On earlier versions of Ubuntu (prior to 14.04) when you run sudo apt-get install php5-mcrypt it doesn't actually install the extension ...
How can I transform between the two styles of public key format, one “BEGIN RSA PUBLIC KEY”, the oth
...s of two numbers:
the modulus (e.g. a 2,048 bit number)
the exponent (usually 65,537)
Using your RSA public key as an example, the two numbers are:
Modulus: 297,056,429,939,040,947,991,047,334,197,581,225,628,107,021,573,849,359,042,679,698,093,131,908,015,712,695,688,944,173,317,630,555,849,7...
PHP Get all subdirectories of a given directory
How can I get all sub-directories of a given directory without files, . (current directory) or .. (parent directory)
and then use each directory in a function?
...
phpinfo() - is there an easy way for seeing it?
...ow, but you can't see the phpinfo(); contents without making the function call. Obviously, the best approach would be to have a phpinfo script in the root of your web server directory, that way you have access to it at all times via http://localhost/info.php or something similar (NOTE: don't do this...
Can you nest html forms?
... I agree with the answer, but to ask another, why not? Why does HTML not allow for nesting forms? To me, it appears to be a limitation that we would be better off without. There are many examples where using nested forms would be easier to program (i.e. using an upload photo form with a profile ed...
PHP + MySQL transactions examples
I really haven't found normal example of PHP file where MySQL transactions are being used. Can you show me simple example of that?
...
What's better at freeing memory with PHP: unset() or $var = null
I realise the second one avoids the overhead of a function call ( update , is actually a language construct), but it would be interesting to know if one is better than the other. I have been using unset() for most of my coding, but I've recently looked through a few respectable classes found off t...
How do I compare two DateTime objects in PHP 5.2.8?
...ar_dump($date1 > $date2); // false
For PHP versions before 5.2.2 (actually for any version), you can use diff.
$datetime1 = new DateTime('2009-10-11'); // 11 October 2013
$datetime2 = new DateTime('2009-10-13'); // 13 October 2013
$interval = $datetime1->diff($datetime2);
echo $interval-&g...