TDC 2016 (Florianópolis) - Vá para o próximo nível - Dicas e truques para a certificação PHP (PT-BR)

Globalcode – Open4education

Trilha – PHPVá para o próximo nível - Dicas e truques para a

certificação PHP

marabesi

@MatheusMarabesi

ZENDSC10X10/jun

HELP

WANTED !

http://phingbrasil.com.br

Who doesn’t want to be certified ?

????????

$coração = 'Hello';

echo $coração;

class Cächaça{}

$cachaça = new Cächaça();

BITWISE

a bitwise operation operates on one or more bit patterns or binary numerals at the level of their individual bits.

It is a fast, primitive action directly supported by the processor, and is used to manipulate values for comparisons and calculations

& AND

| OR

^ XOR

>> RIGHT

<< LEFT

Bits that are set in

both $a AND $b are set.

http://php.net/manual/en/language.operators.bitwise.php

& - AND

0 & 0 = 00 & 1 = 01 & 0 = 01 & 1 = 1

print (4 & 8);

Bits that are set in

either $a OR $b are set.

http://php.net/manual/en/language.operators.bitwise.php

| - OR

0 | 0 = 00 | 1 = 11 | 0 = 11 | 1 = 1

print (2 | 7);

Bits that are set in

$a OR $b but not

BOTH are set. http://php.net/manual/en/language.operators.bitwise.php

| - XOR

0 ^ 0 = 00 ^ 1 = 11 ^ 0 = 11 ^ 1 = 0

print (3 ^ 9);

128 64 32 16 8 4 2 11 1 1 1 1 1 1 1 255

128 64 32 16 8 4 2 10 0 0 0 0 1 0 0 40 0 0 0 1 0 0 0 8

print (4 & 8);

& - AND

128 64 32 16 8 4 2 10 0 0 0 0 0 1 0 20 0 0 0 0 1 1 1 7

print (2 | 7);

| - OR

128 64 32 16 8 4 2 10 0 0 0 0 0 1 1 30 0 0 0 1 0 0 1 9

print (3 ^ 9);

^ - XOR

& AND

| OR

^ XOR

>> RIGHT

<< LEFT

Shift the bits of $a $b steps to the right (each step means "divide by two")

http://php.net/manual/en/language.operators.bitwise.php

bit leftmost / 2 ^ bit rightmost

>> - Shift right

print (4 >> 6);

4 / 2 ^ 6 = 0

Shift the bits of $a $b steps to the left (each step means "multiply by two")

http://php.net/manual/en/language.operators.bitwise.php

bit leftmost * 2 ^ bit rightmost

<< - Shift left

print (7 << 9);

7 * 2 ^ 9 = 3584

& AND

| OR

^ XOR

>> RIGHT

<< LEFT

Bits that are set in $a are not set, and vice versa.

http://php.net/manual/en/language.operators.bitwise.php

~ - Not

~x = -x -1

print (~9);

~9 = -9 -1 = -10

exit(253);

php execute.php

http://www.phpinternalsbook.com/

STREAMS

$context = stream_context_create([ 'http' => [ 'method' => 'GET' ]]);

print file_get_contents('http://api.phpconference.com.br',false,$context

);

$context = stream_context_create([ 'http' => [ 'method' => 'POST', 'header' => 'Content-Type: application/x-www-form-urlencoded', 'content' => 'field=value' ]]);

print file_get_contents('http://api.tdc2016floripa.com.br',false,$context

);

O.O.PObject . Oriented . Programming

LATE STATIC BINDING

XSELF

class A { public static function who() { echo __CLASS__; } public static function test() {

self::who(); }}

class B extends A { public static function who() { echo __CLASS__; }}

B::test();

class A { public static function who() { echo __CLASS__; } public static function test() {

static::who(); }}

class B extends A { public static function who() { echo __CLASS__; }}

B::test();

OBJECT CLONING

class A { public $name;}

$a = new A();

$b = clone $a;

var_dump($a == $b);

class A { public $name;}

$a = new A();$a->name = 'Ana';

$b = clone $a;$b->name = 'Clark';

var_dump($a == $b);

class B { public $lastName;}

class A { public $name; public $lastName;

public function __construct() { $this->lastName = new B(); }}

$a = new A();$a->lastName->lastName = 'River';

$b = clone $a;$b->lastName->lastName = 'Dom';

var_dump($a == $b);

ARRAY

sort();rsort();asort();ksort();krsort();usort();

A

K

U

R

ASSOCIATIVE

KEY

USER

REVERSE

sort();rsort();asort();ksort();krsort();usort();

array_diff_ukeyarray_diff_uassocarray_intersect_assocarray_intersect_uassocarray_intersect_ukey

DON’T

FORGET !

marabesi

@MatheusMarabesi