PHP
What the PHP?
Almost Web purpose only
Easy to use / fast development
Slower than compiled languages
Syntax: Where to start
#include <iostream>
using namespace std;
int main()
{
cout << "Hello!" << endl;
return 0;
}<?php
echo "Hello!";print "Hello!"C++
PHP
Python
PHP, a scripting language!
<h1>Hello</h1>
The time is <?php echo date('Y-m-d H:i:s'); ?>.
<hr>
This is a PHP hypertext processed page.... but Could be written entirely in php
<?php
echo "Hello, world!\n";
echo 'The time is now ', date('Y-m-d H:i:s'), ".\n";Syntax: Variables
int intVar = 5;
float floatVar = 1.5;
const char* text = "hello world!";
<?php
$intVar = 5;
$floatVar = 1.5;
$text = "hello world!";
// constant variable
define('gravity', 10);
echo gravity;intVar = 5
floatVar = 1.5
text = "hello world!"C++
PHP
Python
Syntax: Strings
// These two statements are equivalent:
$x = 5;
$a = "Apples are $x each.";
$a = 'Apples are ' . $x . ' each.';
$test = 5;
$a = 'test';
$$a = 3; // changes $test to 3 , equivalent to $test = 3
echo '3' == 3; // true
echo '3' === 3; // false
Syntax: if
int a = 5;
if (a == 5)
{
// statements
}
else if (condition2)
{
// statements
}
else
{
// statements
}$a = 5;
if ($a == 5) {
// statements
} elseif (condition2) {
// statements
} else {
// statements
}a = 5
if a == 5:
# statements
elif condition2:
# statements
else:
# statementsC++
PHP
Python
Syntax: loops
while (condition)
{
// statements
}
do {
// statements
} while (condition);
for (int i = 0; i < 10; i++)
{
// statements
}
for (string element : list)
{
// statements
}while (condition){
// statements
}
do {
// statements
}
while (condition);
for ($i = 0; $i < 10; $i++) {
// statements
}
foreach ($list as $element) {
// statements
}while condition:
# statements
# no do-while
for i in xrange(10):
# statements
for element in lst:
# statementsC++
PHP
Python
Syntax: array
int a[10];
a[0] = 1;
int* b = new int[n];
b[n-1] = 1;
vector<int> dynamic;
dynamic.push_back(1);
map<string, int> aMap;
aMap["ali"] = 19;
$lst = [0, 2, 3, "text", 1.5];
$lst[1] = 13;
$lst = [];
$lst[] = 0;
$lst[] = 1;
$map = ["key" => "value"];
$map["Ali"] = 19;lst = [1, 2, 3, "text", 1.5]
lst[0] = 13
lst = []
lst.append("text1");
lst.append("text2");
dict = { "key": "Value" }
dict["ali"] = 19C++
PHP
Python
Syntax: functions
void setItem(int item)
{
// ...
}
int getItem()
{
return 5;
}function setItem($item) {
// ...
}
function getItem() {
return 5;
}def set_item(item):
# ...
def get_item():
return 5C++
PHP
Python
Syntax: OO
class Vector : public Point
{
public:
// ...
int getX();
private:
int x = 0;
int y = 0;
}
Vector::getX()
{
return x;
}
int main()
{
Vector* v = new Vector(...);
v->getX();
// ...
}class Vector extends Point {
private $x = 0;
private $y = 0;
// ..
public function getX() {
return $this->x;
}
}
$v = new Vector(...)
$v->getX();class Vector(Point):
def __init__(self, ...):
self.x = 0
self.y = 0
def get_x(self):
return self.x
v = Vector(...)
v.get_x()
C++
PHP
Python
How to run?
$ g++ source.cpp && ./a.out$ php source.php$ python source.pyC++
PHP
Python
How to run?
g++ source.cpp && ./a.outphp source.phppython source.pyC++
PHP
Python
Run via WebServer
HTTP requests: $_GET
foreach ($_GET as $key => $value) {
echo $key . ': ' . $value;
echo "\n";
}
// output:
// key1: value1
// key2: value2
// key3: value3
HTTP requests: $_POST
foreach ($_POST as $key => $value) {
echo $key . ': ' . $value;
echo "\n";
}
// output:
// pk1: value1
// pk2: value2
// pk3: value3
deck
By Amirhossein Kazemnejad
