cam-gists

<?php
// create new DirectoryIterator object
$dir = new DirectoryIterator("/my/directory/path");

// loop through the directory listing
foreach ($dir as $item) {
    echo $item . "<br>";
}

cam-gists

<?php
try {
    $dir = new DirectoryIterator("/non/existent/path");
    foreach ($dir as $item) {
        echo $item . "<br>";
    }
}
catch (Exception $e) {
    echo get_class($e) . ": " . $e->getMessage();
}

cam-gists

<?php
class FileExtensionFilter extends FilterIterator
{
    // whitelist of file extensions
    protected $ext = ["php", "txt"];

    // an abstract method which must be implemented in subclass
    public function accept() {
        return in_array($this->getExtension(), $this->ext);
    }

cam-gists

<?php
// create new RecursiveDirectoryIterator object
$iter = new RecursiveDirectoryIterator("/my/directory/path");

// loop through the directory listing
// we need to create a RecursiveIteratorIterator instance
foreach (new RecursiveIteratorIterator($iter) as $item) {
    echo $item . "<br>";
}

cam-gists

<?php
// http://phpmaster.com/using-spl-iterators-2/
class Library implements Iterator
{
    // an internal pointer to the current position
    // in the dataset
    protected $position = 0;

    // an array of the titles of the books in the library
    protected $books = [

cam-gists

<?php

class Library implements IteratorAggregate
{
    protected $books = [
        "Professional PHP Programming",
        "Programming Perl",
        "A Byte of Python",
        "The Ruby Way"
    ];

cam-gists

<?php
	$db = new PDO("mysql:host=localhost;dbname=testdb", "dbuser", "dbpassword");

	$result = $db->query("SELECT dt_date FROM some_table");
	while ($row = $result->fetch(PDO::FETCH_ASSOC)) {
	    print_r($row);
	    var_dump($row["dt_date"]);
	}
	$result->closeCursor();
	

cam-gists

<?php
// Localization
$result = $db->query("SELECT int_date FROM some_table");
while ($row = $result->fetch(PDO::FETCH_ASSOC)) {
    $dt = new DateTime();
    $tz = new DateTimeZone($_SESSION["userTZ"]);
    $dt->setTimestamp($row["int_date"]);
    $dt->setTimezone($tz);
    print $dt->format("r");
}

cam-gists

<?php
 print time();
//1324402770
 $unixTime = time();
 print_r(getdate($unixTime));
// Array
// (
//    [seconds] => 48
//    [minutes] => 54
//    [hours] => 12

cam-gists

<?php
// http://phpmaster.com/defining-and-using-functions-in-php/
function calcAverage() {
    // initialize value to be used in calculation
    $total = 0;							

    // find out how many arguments were given
    $arguments = func_num_args();     	

    // loop to process each argument separately