salathe

<table xmlns="http://query.yahooapis.com/v1/schema/table.xsd">
  <meta>
    <author>Peter Cowburn</author>
    <documentationURL>http://stackoverflow.com/questions/15249380/is-it-possible-to-filter-the-descendant-elements-returned-from-an-xpath-query</documentationURL>
    <sampleQuery>select * from {table} where url="http://www.yahoo.com"</sampleQuery>
  </meta>
  <bindings>
    <select itemPath="" produces="XML">
      <urls>
        <url></url>

salathe

<?php
 
$string = 'example';
var_dump(
  empty($string['string_offset']),
  isset($string['string_offset']),
  $string['string_offset']
);

salathe

<?php
 
class CallbackJsonSerializer implements JsonSerializable
{
    public function __construct($subject, callable $callback)
    {
        $this->subject = $subject;
        $this->callback = $callback;
    }
 

salathe

$var? operator

$var ?           => isset($var)
$var ? default   => isset($var) ? $var : default
$var ?= default  => $var = $var ? default => $var = isset($var) ? $var : default

mixing with existing operators

$var ?? val : default => isset($var) ? val : default

if ($var?) => if (isset($var))

salathe

Please, don't use mysql_* functions to write new code. They are no longer maintained and the community has begun the deprecation process. See the red box? Instead, you should learn about prepared statements and use either PDO or MySQLi. If you can't decide which, this article will help you. If you pick PDO, here is good tutorial.

salathe

\

salathe

Please, don't use `mysql_*` functions for new code. They are no longer maintained and the community has begun the [deprecation process](http://news.php.net/php.internals/53799). See the [**red box**](http://php.net/mysql-connect)? Instead you should learn about [prepared statements](http://en.wikipedia.org/wiki/Prepared_statement) and use either [PDO](http://php.net/pdo) or [MySQLi](http://php.net/mysqli). If you can't decide, [this article](http://php.net/mysqlinfo.api.choosing) will help to choose. If you care to learn, [here is good PDO tutorial](http://wiki.hashphp.org/PDO_Tutorial_for_MySQL_Developers).

salathe

/* {{{ proto int count(mixed var [, int mode])
   Count the number of elements in a variable (usually an array) */
PHP_FUNCTION(count)
{
	zval *array;
	long mode = COUNT_NORMAL;

	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "z|l", &array, &mode) == FAILURE) {
		return;
	}

salathe

<?php

$doc = new DOMDocument();
$doc->loadXML('<example a="b">Test</example>');
$el = $doc->documentElement;
$at = $el->getAttributeNode('a');
$tx = $el->firstChild;

var_dump($doc);
var_dump($el);

salathe

<?php

$ul = '<ul id="menu">
<li id="Thing 1" class="some_class">Thing 1</li>
<li id="Thing 2" class="someother_class">Thing 2</li>
<li id="Thing 3" class="some_class">Thing 3</li>
<li id="Thing 4" class="some_class">Thing 4</li>
</ul>';

$dom = new DOMDocument;