Day 4 - Decision Making - Become PHP Expert in 30 days

[annie]

Do not use single quotes for numbers

$a = 3;
$b = 8;

http://php.flashwebhost.com/sherly/numbers.php

<?php
// Number comparison
  $a='3';
  $b='8';
 if ($a<$b)
 {
 echo $a. 'is smaller than'.$b;
 }

[sherlyk]

I got an error

http://php.flashwebhost.com/sherly/medicine.php

Parse error:  syntax error, unexpected 'if' (T_IF) in /home/fwhphp/public_html/sherly/medicine.php on line 3

<?php
$overtime=40
if ($overtime<=60)
{
$pay_amount=1500;
$medicine=1000;
echo 'Pay Amount : $pay_amount : Medicine : $medicine';
}
else
{
$$pay_amount=2000;
$medicine=1700;
echo 'pay Amount : $pay_amount : Medicine : $medicine';
}

[admin]

$overtime=40

Missing ending semicolon (;)

[annie]

http://php.flashwebhost.com/annie/if...reater_bug.php

<?php
$passScore = 210;
$studentName = 'Mike';
$studentScore = 190;
if ($studentScore > $passScore) {
echo 'Congratulations' . $studentName . 'You passed the exam with' . $studentMark . 'mark.';
} else {

echo 'Passing Score is'  .  $passScore . '.Your Score is' . $studentScore ; 

echo '<br>';

echo 'Sorry You did not pass the exam. Good luck and Cheers next time. ';
}

[admin]

http://php.flashwebhost.com/annie/if...reater_bug.php

<?php
$passScore = 210;
$studentName = 'Mike';
$studentScore = 190;
if ($studentScore > $passScore) {
echo 'Congratulations' . $studentName . 'You passed the exam with' . $studentMark . 'mark.';
} else {

echo 'Passing Score is'  .  $passScore . '.Your Score is' . $studentScore ; 

echo '<br>';

echo 'Sorry You did not pass the exam. Good luck and Cheers next time. ';
}

echo 'Congratulations' . $studentName . 'You passed the exam with' . $studentMark . 'mark.';

On this line, you have $studentMark, this variable is not defined (created/used) in that program.. It should be replaced with $studentScore.

Use tab for indent code inside { and }, refer my code. Code inside { and } is called code block, must be indented (press TAB key).

[annie]

Try this code

<?php
$overtime=40;
if ($overtime<=60)
{
$pay_amount=1500;
$medicine=1000;
echo 'Pay Amount ' . $pay_amount .' Medicine ' . $medicine;
}
else
{
$pay_amount=2000;
$medicine=1700;
echo 'pay Amount ' . $pay_amount . ' Medicine ' . $medicine;
}

I got an error

http://php.flashwebhost.com/sherly/medicine.php

Parse error:  syntax error, unexpected 'if' (T_IF) in /home/fwhphp/public_html/sherly/medicine.php on line 3

<?php
$overtime=40
if ($overtime<=60)
{
$pay_amount=1500;
$medicine=1000;
echo 'Pay Amount : $pay_amount : Medicine : $medicine';
}
else
{
$$pay_amount=2000;
$medicine=1700;
echo 'pay Amount : $pay_amount : Medicine : $medicine';
}

[melbin]

http://php.flashwebhost.com/melbin/days.php

<?php
$day='Sunday';
if ($day="Sunday") {
    echo 'Have a nice Sunday';
}

else {
    echo 'Have a nice day';
}

In this code when i use == on line no:3

if ($day=="Sunday") {

i am getting the result as FALSE. Why ?

Doubt 2

Is it possible to get the day by using PHP date and time function ?

[melbin]

http://php.flashwebhost.com/melbin/result.php

<?php
$mark=85; // Enter Mark between 1 and 100

if ($mark > 100){
    echo "$mark/100 ???... INVALID MARK";
}

else if ($mark >= 80 and $mark <= 100){
    echo 'Congratulations You have got ' . $mark . ' Marks - Grade : Distinction';
}

else if ($mark >=60 and $mark <80) {
    echo 'Congratulations You have got ' . $mark . ' Marks - Grade : First Class';
}

else if ($mark >=50 and $mark <60) {
    echo 'Congratulations You have got ' . $mark . ' Marks - Grade : Second Class';
}

else if ($mark >=0 and $mark <50) {
    echo 'Sorry You did not pass the exam. Your Mark is ' . $mark . ' - Status : FAILED';
}

else {
    echo 'INVALID MARK';
}

[admin]

http://php.flashwebhost.com/melbin/days.php

<?php
$day='Sunday';
if ($day="Sunday") {
    echo 'Have a nice Sunday';
}

else {
    echo 'Have a nice day';
}

In this code when i use == on line no:3 i am getting the result as FALSE. Why ?

= is assignment operator, that means you are just assigning a value to variable $day.

Use == operator to check if value is same or not.

Doubt 2

Is it possible to get the day by using PHP date and time function ?

It is possible using date() function.

[admin]

http://php.flashwebhost.com/melbin/result.php

<?php
$mark=85; // Enter Mark between 1 and 100

if ($mark > 100){
    echo "$mark/100 ???... INVALID MARK";
}

else if ($mark >= 80 and $mark <= 100){
    echo 'Congratulations You have got ' . $mark . ' Marks - Grade : Distinction';
}

else if ($mark >=60 and $mark <80) {
    echo 'Congratulations You have got ' . $mark . ' Marks - Grade : First Class';
}

else if ($mark >=50 and $mark <60) {
    echo 'Congratulations You have got ' . $mark . ' Marks - Grade : Second Class';
}

else if ($mark >=0 and $mark <50) {
    echo 'Sorry You did not pass the exam. Your Mark is ' . $mark . ' - Status : FAILED';
}

else {
    echo 'INVALID MARK';
}

Good script.