= PHP =
http://www.php.net/
= syslog =
Generate a system log message
{{{#!highlight php
<?php
// levels LOG_EMERG LOG_ALERT LOG_CRIT LOG_ERR LOG_WARNING LOG_NOTICE LOG_INFO LOG_DEBUG
syslog(LOG_INFO,'Hello here'); // In Slackware by default logs the message to /var/log/messages
?>
}}}
=== Log levels and files in operative systems ===
||'''OS''' || '''File'''|| '''Logged levels'''||
||Slack64 14|| /var/log/messages|| INFO||
||Slack64 14|| /var/log/syslog|| WARNING ERR CRIT||
||CentOS 6.4|| /var/log/messages|| INFO WARNING ERR CRIT||
||Ubuntu 12.04 Precise|| /var/log/syslog|| DEBUG INFO WARNING ERR CRIT||
||Debian 7.0 Wheezy|| /var/log/syslog ||DEBUG INFO WARNING ERR CRIT||
== array ==
Create an array
{{{!highlight php
<?php
$fruits = array (
"fruits" => array("a" => "orange", "b" => "banana", "c" => "apple"),
"numbers" => array(1, 2, 3, 4, 5, 6),
"holes" => array("first", 5 => "second", "third")
);
$foo = array('bar' => 'baz');
echo "Hello {$foo['bar']}!"; // Hello baz!
?>
}}}
== array_push ==
Push one or more elements onto the end of array
{{{#!highlight php
<?php
$array[] = $var; // push $var into $array
$stack = array("orange", "banana");
array_push($stack, "apple", "raspberry");
?>
}}}
== count ==
Count all elements in an array, or something in an object
{{{#!highlight php
<?php
$a[0] = 1;
$a[1] = 3;
$a[2] = 5;
$result = count($a); // $result == 3
}}}
== intval ==
Get the integer value of a variable
{{{#!highlight php
<?php
echo intval(42); // 42
echo intval(4.2); // 4
echo intval('42'); // 42
?>
}}}
= sprintf =
Return a formatted string
{{{#!highlight php
<?php
echo sprintf('There are %d monkeys in the %s', 5, 'tree');
?>
}}}
= str_replace =
Replace all occurrences of the search string with the replacement string
{{{#!highlight php
<?php
// Returns <body text='black'>
$bodytag = str_replace("%body%", "black", "<body text='%body%'>");
?>
}}}
== Class ==
{{{#!highlight php
<?php
class SimpleClass
{
// property declaration
public $var = 'a default value';
// method declaration
public function displayVar() {
echo $this->var;
}
}
class Foo
{
public static $my_static = 'foo';
public function staticValue() {
return self::$my_static;
}
}
class Bar extends Foo
{
public function fooStatic() {
return parent::$my_static;
}
}
class Foo {
public static function aStaticMethod() {
// ...
}
}
class MyClass
{
const CONSTANT = 'constant value';
function showConstant() {
echo self::CONSTANT . "\n";
}
}
class MyClass
{
public $public = 'Public';
protected $protected = 'Protected';
private $private = 'Private';
function printHello()
{
echo $this->public;
echo $this->protected;
echo $this->private;
}
}
?>
}}}