IF: you only need a single header, instead of all headers, the quickest method is: <?php // Replace XXXXXX_XXXX with the name of the header you need in UPPERCASE (and with ‘-‘ replaced by ‘_’) $headerStringValue = $_SERVER[‘HTTP_XXXXXX_XXXX’]; ELSE IF: you run PHP as an Apache module or, as of PHP 5.4, using FastCGI (simple … Read more
You are looking for the command scandir. $path=”/tmp”; $files = scandir($path); Following code will remove . and .. from the returned array from scandir: $files = array_diff(scandir($path), array(‘.’, ‘..’));
The importance of locales is that your environment/os can provide formatting functionality for all installed locales even if you don’t know about them when you write your application. My Windows 7 system has 211 locales installed (listed below), so you wouldn’t likely write any custom code or translation specific to this many locales. Edit: The … Read more
If you use AND and OR, you’ll eventually get tripped up by something like this: $this_one = true; $that = false; $truthiness = $this_one and $that; Want to guess what $truthiness equals? If you said false… bzzzt, sorry, wrong! $truthiness above has the value true. Why? = has a higher precedence than and. The addition … Read more
If you’re using PHP5 (>= 5.3.2) with PHPUnit, you can test your private and protected methods by using reflection to set them to be public prior to running your tests: protected static function getMethod($name) { $class = new ReflectionClass(‘MyClass’); $method = $class->getMethod($name); $method->setAccessible(true); return $method; } public function testFoo() { $foo = self::getMethod(‘foo’); $obj = … Read more
$functionName() or call_user_func($functionName)
They have slightly different purposes. exec() is for calling a system command, and perhaps dealing with the output yourself. system() is for executing a system command and immediately displaying the output – presumably text. passthru() is for executing a system command which you wish the raw return from – presumably something binary. Regardless, I suggest … Read more
The var_dump function displays structured information about variables/expressions including its type and value. Arrays are explored recursively with values indented to show structure. It also shows which array values and object properties are references. The print_r() displays information about a variable in a way that’s readable by humans. array values will be presented in a … Read more
You can use the microtime function for this. From the documentation: microtime — Return current Unix timestamp with microseconds If get_as_float is set to TRUE, then microtime() returns a float, which represents the current time in seconds since the Unix epoch accurate to the nearest microsecond. Example usage: $start = microtime(true); while (…) { } … Read more
If your script is expected to allocate that big amount of memory, then you can increase the memory limit by adding this line to your php file ini_set(‘memory_limit’, ’44M’); where 44M is the amount you expect to be consumed. However, most of time this error message means that the script is doing something wrong and … Read more