loop and conditions

1. USING CONDITIONAL CODE

2. CONDITIONAL CODE
If( ) {
}
condition
// your additional code goes here
// . . .

3. TERMINOLOGY
parentheses
brackets
braces
( )
{ }
[ ]

4. CONDITIONAL CODE
If( ) {
}
condition
echo “it’s true!”;
// . . .
$a < 50$b > 20
true or false?
$c == 99$c === 99$d != 100 Code block

5. EQUALITY
If( $a == $b ){
// execute this code
}

6. ASSIGNMENT INSTEAD OF EQUALITY
$a = 5;
$b = 10;
If( $a = $b ){
// always true!
}

7. OPERATOR WITH =
= assignment
== equality
=== strict equality

8. COMPARISON
If( $a == $b ){ …
If( $a != $b ){ …
If( $a === $b ){ …
If( $a !== $b ){ …
If( $a > $b ){ …
If( $a < $b ){ …
If( $a >= $b ){ …
If( $a <= $b ){ …

9. &&
LOGICAL AND / OR
If( $a === $b $c === $d){…
If( $a === $b $c === $d){…
If( ($a > $b) && ($c > $d) ){…
and
or||