function mathOperation($arg1, $arg2, $operation)
{
switch ($operation) {
case 'addition':
echo "Результат сложения {$arg1} и {$arg2} равен " . addition($arg1, $arg2) . "<br>";
break;
case 'subtraction':
echo "Результат вычитания {$arg2} из {$arg1} равен " . subtraction($arg1, $arg2) . "<br>";
break;
case 'multiplication':
echo "Результат умножения {$arg1} на {$arg2} равен " . multiplication($arg1, $arg2) . "<br>";
break;
case 'remainder of the division':
echo "Результат вычисления остатка при делении {$arg1} на {$arg2} равен " . remainderOfTheDivision($arg1, $arg2) . "<br>";
break;
default:
echo "Введено неверное название операции<br>";
break;
}
}
</div>
<br><br>
<table width="500" border="0" align="center" cellpadding="1" cellspacing="1" class="tbl_border">
<tr>
<td><table width="100%" border="0" cellpadding="0" cellspacing="0" class="tbl_gray_wborder">
<tr>
<td class="txt14b_black">
<p align="center"><span class="txt16b_blue">Sample Output: </span><br>
<br>
<?php
function addition($val1, $val2)
{
$sum = $val1 + $val2;
return $sum;
}
addition(3, 4);
$new_val = addition(3, 4);
if (addition(5, 6) == 11) {
//echo "Yes";
}
?>
<br>
</p></td>
</tr>
</table></td>
</tr>
</table>
</body>
</html>
<?php
echo "<h1>Welcome Samuel!</h1>";
//Usage of echo
echo "<br>";
$age = array("Samuel" => "29", "Sudhakar" => "30");
//Associative array
echo "Samuel is " . $age['Samuel'] . " years old.<br>";
$age1 = 29;
echo "Samuel is {$age1} years old.<br>";
//Global variables test
echo "Global variables test (Exception)";
$x = 75;
$y = 25;
function addition()
{
$GLOBALS['z'] = $GLOBALS['x'] + $GLOBALS['y'];
}
addition();
echo "<br>";
//echo $z;
echo $y;
echo $y;
echo $x;
function say_hello()
{
echo "Hello World! <br />";
}
say_hello();
function say_hello2($word)
{
echo "Hello {$word}! <br />";
}
say_hello2("World");
say_hello2("Universe");
$name = "John Doe";
say_hello2($name);
//$target is an internal variable that is only used within
//the function
function say_hello3($greeting, $target, $punct)
{
echo $greeting . ", " . $target . $punct . "<br />";
}
say_hello3("Greetings", $name, "!");
?>
<br />
<?php
function addition($val1, $val2)
{
$sum = $val1 + $val2;
}
echo addition(3, 4);
?>
</body>
</html>
echo "<h2 style='text-align:center;'>Sorry no, " . $var1 . " is equal to " . $var2 . ".</h2>";
}
}
//--Math System
$question = $query[1];
$answer = 0;
/*
Using this regex we can split the string into an array based on the 4 math operators (+,-,/,*).
PREG_SPLIT_DELIM_CAPTURE returns the operators as part of the array.
*/
$stack = preg_split('/ *([+\\-\\/*]) */', $question, -1, PREG_SPLIT_DELIM_CAPTURE);
//The stack array must have a minimum of 3 elements to form a valid math operation: [A] [OPERATOR] [B]
while (sizeof($stack) >= 3) {
switch ($stack[1]) {
case "+":
$answer = addition($stack[0], $stack[2]);
break;
case "-":
$answer = subtract($stack[0], $stack[2]);
break;
case "*":
$answer = multiply($stack[0], $stack[2]);
break;
case "/":
$answer = divide($stack[0], $stack[2]);
break;
}
//Remove the first 3 elements from the stack as they have been processed
$stack = array_slice($stack, 3);
//Add the current answer total to the beginning of the array for any further processes
array_unshift($stack, $answer);
function test()
{
$a = 23;
global $a;
//define global scope first
echo $a . "</br>";
/* reference to local scope variable */
}
test();
function addition($two, $one)
{
// static $two = 3;
// static $one = 5;
echo $two * $one . "</br>";
}
addition(3, 15);
/*----------------------------------
S U P E R G L O B A L S
$GLOBALS
$_SERVER
$_GET
$_POST
$_SESSION
Next we have a CLASS example with
setter and getter for prop values
------------------------------------*/
/*----------------------------------
P R O P S C O P E S
echo $greeting . ", " . $target . $punct . "<br />";
return true;
}
say_hello3("Greetings", $name, "!");
?>
<br />
<?php
function addition($val1, $val2)
{
$sum = $val1 + $val2;
return $sum;
}
$new_val = addition(3, 4);
echo $new_val;
echo "<br />";
$new_val2 = addition(5, 6) == 11;
echo "yes";
echo "<br />";
function add_subt($val1, $val2)
{
$add = $val1 + $val2;
$subt = $val1 - $val2;
$result = array($add, $subt);
return $result;
}
$result_array = add_subt(10, 5);
echo "Add: " . $result_array[0];
echo "<br />";
echo "Subt: " . $result_array[1];
?>
</body>
function sayName3($greeting, $target, $punct)
{
echo $greeting . ", " . $target . $punct . "!";
}
sayName3("Good evening", $name, "!");
?>
<!-- returning a value from a function -->
<br>
<?php
function addition($var1, $var2)
{
$sum = $var1 + $var2;
return $sum;
}
// assigning the value to a variable
$value = addition(1, 2);
echo $value;
?>
<!-- returning two values using an array -->
<br>
<?php
function add_sub($var1, $var2)
{
$add = $var1 + $var2;
$sub = $var1 - $var2;
// <!-- inserting the values in an array -->
$result = array($add, $sub);
return $result;
}
$addsub_array = add_sub(10, 8);
echo "Addition: " . $addsub_array[0] . "<br>";
