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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...
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...
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...
Deleting an element from an array in PHP
...ndex the keys you can use \array_values() after unset() which will convert all keys to numerical enumerated keys starting from 0.
Code
<?php
$array = [0 => "a", 1 => "b", 2 => "c"];
unset($array[1]);
//↑ Key which you want to delete
?>
Output
[
[0] =&g...
How do I resolve a HTTP 414 “Request URI too long” error?
I have developed a PHP web app. I am giving an option to the user to update multiple issues on one go. In doing so, sometimes the user is encountering this error. Is there any way to increase the lenght of URL in apache?
...
What are namespaces?
...espacing does for functions and classes what scope does for variables. It allows you to use the same function or class name in different parts of the same program without causing a name collision.
In simple terms, think of a namespace as a person's surname. If there are two people named "John" yo...
How to check whether mod_rewrite is enable on server?
...nfiguration file, make sure the virtual host in question has the directive AllowOverride All somewhere like this:
<VirtualHost *:80>
...
<Directory "directory/of/your/.htaccess">
AllowOverride All
</Directory>
</VirtualHost>
Basically, this states to ...
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?
...
Can I try/catch a warning?
...rror handler
One possibility is to set your own error handler before the call and restore the previous error handler later with restore_error_handler().
set_error_handler(function() { /* ignore errors */ });
dns_get_record();
restore_error_handler();
You could build on this idea and write a re-u...