HTML – Basic Tags

Headers: <h1> This is a big header. </h1>
<h2> This is a smaller header. </h2>
<h6> This is the smallest header </h6>

Paragraph: <p> This is a paragraph </p>

Link: <a href =”http://www.google.com”> This is a link </a>

Image: <img src=”http://example.com/image.jpg” />

Unordered (bulleted) list:
<ul>
<li> This is a list item . </li>
<li> And another </li>
</ul>

Ordered (numbered) list:
<ol>
<li> This is a list item . </li>
<li> And another </li>
</ol>

Table:
<table>
<tr>
<th> Header cell </th>
<th> Another header cell</th>
</tr>
<tr>
<td> Regular cell </td>
<td> Another regular cell </td>
</tr>
</table>

HTML – Forms

Form:

<form action=”something.php” method=”post”>

Text Field: <input type=”text” name=”…”/>
Checkbox: <input type=”checkbox” name=”…” value=”…”/>
Radio Buttons: <input type=”radio” name=”…” value=”…”/>
Submit Style #1: <input type = “submit”/>
Submit Style #2: <button type=”submit”> Submit Form </button>
</form>

PHP – Forms
$x=$_POST[“name”];
(where “name” matches the input name in your html file.)



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PHP – Basics

Variables: $x=5;
$y=33;
$total=9999;

Printing: 
echo “The total is $total”;
print “x is equal to $x”;

Arithmetic Operators: Examples:

+ (plus) $x =5+$y;
- (minus) $total = $y-100;
* (times) $x_squared = $x*$x;
/ (divide) $half_total = $total/2;

PHP – Forms
$x=$_POST[“name”];
(where “name” matches the input name in your html file.)

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PHP

Variables:
$x=5;
$word="hello";

Printing:
echo "This is a sentence";
print "The value is $x";

Comparison Operators:
== (equals)
!= (not equals)
> (greater than)
< (less than)
>= (greater than or equal to)
<= (less than or equal to)

Conditional statements:
if($x > 5) {
print "$x is greater than 5";
}
if($word == "hello") {
print "The word is hello";
}
else {
print "The word is not hello";
}

For loops:
for($i=starting number; $i<=ending number; $i++) {
//Everything between these braces is repeated
}
//start at 0; end at 30; add 1 to $i each time
for($i=0; $i<=30; $i++) {
echo "i is currently $i";
}
//start at 1; end at 19; add 5 to $i each time
for($i=1; $i<20; $i=$i+5) {
echo "i is currently $i";
}

Declaring Functions:
function subtract($x, $y) {
$value = $x-$y;
return $value;
}
function print_hello() {
echo "Hello World";
}

Using Functions:
$result=$subtract(10,5);
echo "$result <br>";
print_hello();