Basic php

<?php

// variable

$shuvo_islam = '<h2>'."Welcome to php learning By shuvo".'</h2>';

echo $shuvo_islam, '<br/>';

$test_v = "ami shuvo islam";

echo $test_v, '<br/>';

$year = 2020;

echo $year, '<br/>';


// constent

echo '<hr>';

$constentnumber = '<h2>'."constent variable".'</h2>';

echo $constentnumber, '<br/>';

define('PI', 3.1416);

echo PI, '<br/>';

define('ROOT', 125);

echo ROOT;


echo '<hr>';

// mathmatical operator

$mathmatical = '<h2>'."Arithmatic Operator (mathmatical operator)".'</h2>';

echo $mathmatical, '<br/>';

$number1 = 100;
$number2 = 25;

echo $number1 + $number2, '<br/>';
echo $number1 - $number2, '<br/>';
echo $number1 * $number2, '<br/>';
echo $number1 / $number2, '<br/>';
echo $number1 % $number2;


echo '<hr>';

// Assignment operator

$Assignmentop = '<h2>'."Assignment Operator".'</h2>';

echo $Assignmentop, '<br/>';

$name = "Md";
$name .= " Shuvo";
$name .= " islam";

echo $name;


echo '<hr>';

// Comparison operator

$Comparisonop = '<h2>'."Comparison Operator".'</h2>';

echo $Comparisonop, '<br/>';

var_dump(10 > 5);

echo '<br/>';

var_dump(10 < 5);

echo '<br/>';

var_dump(5 <= 10);

echo '<br/>';

var_dump(5 >= 10);

echo '<br/>';

var_dump(5 == 10);

echo '<br/>';

var_dump(5 != 10);

echo '<br/>';

var_dump('5' === 10);


echo '<hr>';

// Logical operator

$Logicalop = '<h2>'."Logical Operator".'</h2>';

echo $Logicalop, '<br/>';


$day = "Monday";

if ($day === "Friday" || $day === "Satuday") {
    echo 'today is holiday';
}elseif ($day === "thrusday") {
    echo "todaay is holiday";
}
else{
    echo "today is not holiday";
}

echo '<hr>';

// Array

$arrayf = '<h2>'."Array".'</h2>';

echo $arrayf, '<br/>';

$array = ['shuvo', 'islam', 25, 25, 20];

echo $array[0];


echo '<hr>';

// Assosiative Array

$arraya = '<h2>'."Assosiative Array".'</h2>';

echo $arraya, '<br/>';

$arraya = [

    'name' => 'shuvo',
    'nickname' => 'islam',
    'designation' => 'web developer'

];

echo $arraya['name'];


echo '<hr>';

// Multidimentional Array

$arraym = '<h2>'."Multidimentional Array".'</h2>';

echo $arraym, '<br/>';

$arraym = [
    'name' => 'shuvo',
    'nickname' => 'islam',
    'designation' => 'web developer',
    'adress' => [

        'strait_address' => '1040 Malibagh',
        'city' => 'Dhaka',

        'country' => [
            'bangladesh' => 'Bangldesh',
            'india' => 'India',
            'pakisthan' => 'Pakisthan',
        ],
    ],
];

echo '<pre>'; print_r($arraym); echo '<pre/>';



echo '<hr>';

// While Loop

$wloob = '<h2>'."While Loop".'</h2>';

echo $wloob, '<br/>';

$i = 1;

while ($i <= 10) {
    echo $i . 'x5=' . $i*5 . '<br/>';
    $i++;
}


echo '<hr>';

// Do While Loop

$wlood = '<h2>'."Do While Loop".'</h2>';

echo $wlood, '<br/>';

$i = 1;

do{
    echo $i . 'x7=' . $i*7 . '<br/>';
    $i++;
} while ($i <= 10);


echo '<hr>';

// For Loop

$floop = '<h2>'."For Loop".'</h2>';

echo $floop, '<br/>';

for ($i=1; $i <= 10; $i++) {
    echo $i . 'x7=' . $i*7 . '<br/>';
}

echo '<hr>';

// Foreach Loop

$feach = '<h2>'."Foreach Loop".'</h2>';

echo $feach, '<br/>';


$array = [
    1,2,3,4,5,6,7,8,9,10
];

foreach ($array as  $value) {
    echo $value . 'x8=' . $value * 8 . '<br/>';
}


echo '<hr>';

// Function

$feach = '<h2>'."Function".'</h2>';

echo $feach, '<br/>';


Function sum($number1, $number2){
    return $number1 + $number2;
}
echo sum(10,20) * 10;
echo '<br/>';
echo sum(50,60) / 2;


echo '<hr>';

// Function

$feach = '<h2>'."Built In Function".'</h2>';

echo $feach, '<br/>';

$array = [

    10,10,20,30,40,50
];

$filterd_array = array_unique($array);

var_dump($filterd_array);