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instantiate a class from a variable in PHP?
...r as I can tell) must declare the full namespace path of a class.
MyClass.php
namespace com\company\lib;
class MyClass {
}
index.php
namespace com\company\lib;
//Works fine
$i = new MyClass();
$cname = 'MyClass';
//Errors
//$i = new $cname;
//Works fine
$cname = "com\\company\\lib\\".$cname...
Checking for empty arrays: count vs empty
This question on ' How to tell if a PHP array is empty ' had me thinking of this question
12 Answers
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Why check both isset() and !empty()
... @karim IMO empty is one of the most misunderstood functions in PHP. The tiny snippet about "no warning is generated" is very easy to overlook. I had to scan the documentation myself a few times to spot it to post it here.
– deceze♦
Dec 30 '10 at 4...
PDO closing connection
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According to documentation you're correct (http://php.net/manual/en/pdo.connections.php):
The connection remains active for the lifetime of that PDO object. To
close the connection, you need to destroy the object by ensuring that
all remaining references to it are de...
What is the “->” PHP operator called and how do you say it when reading code out loud? [closed]
What do you call this arrow looking -> operator found in PHP?
16 Answers
16
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How do I Sort a Multidimensional Array in PHP [duplicate]
...s[$key] = $row[0];
}
array_multisort($dates, SORT_DESC, $mdarray);
For PHP >= 5.5.0 just extract the column to sort by. No need for the loop:
array_multisort(array_column($mdarray, 0), SORT_DESC, $mdarray);
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Convert a PHP object to an associative array
... (what you asked for) it's fine.
Also see this in-depth blog post:
Fast PHP Object to Array conversion
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What is the use of the @ symbol in PHP?
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It suppresses error messages — see Error Control Operators in the PHP manual.
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How to declare a global variable in php?
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If you try to define FOOTER_CONTENT a second time, php will throw a notice about it
– Dale
Nov 23 '12 at 14:06
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mysqli_fetch_assoc() expects parameter / Call to a member function bind_param() errors. How to get t
...s the reason. Unfortunately, by default such errors are not transferred to PHP, and all you've got is a cryptic error message mentioned above. Hence it is very important to configure PHP and MySQLi to report MySQL errors to you. And once you get the error message, fixing it will be a piece of cake....