PHP Lecture 2 - Conditional Statement, Loop

Jun 12, 2017Download as PPTX, PDF3 likes547 views

PHP Lecture 2 - Conditional Statement, Loop, if Statement, if-else statement, Nested if-else, Switch statement, For loop, while loop, do while loop, foreach loop

Conditional Statement
if Statement
if-else statement
1
2
Nested if-else3
Switch4

if statement
if (condition) {
code to be executed if condition is true;
}
2

if-else statement
if (condition) {
code to be executed if condition is true;
} else {
code to be executed if condition is false;
}
2

Nested if-else
if (condition) {
code to be executed if this condition is true;
} elseif (condition) {
code to be executed if this condition is true;
} else {
code to be executed if all conditions are false;
}

Nested if-else
switch (n) {
case label1:
code to be executed if n=label1;
break;
case label2:
code to be executed if n=label2;
break;
case label3:
code to be executed if n=label3;
break;
...
default:
code to be executed if n is different from all labels;
}
2

Loops
while loop2
do while loop3
foreach4
For loop1

While Loop
while (condition is true) {
code to be executed;
}

For Loop
for (init counter; test counter; increment counter) {
code to be executed;
}

Do while Loop
do {
code to be executed;
} while (condition is true);

Foreach Loop
foreach ($array as $value) {
code to be executed;
}

We are covering following topics: If...Else...Elseif Statements: if statement executes some code if one condition is true. Switch Statement: Switch Statement tests a variable against a series of values. For Loop: For loop executes a block of code a specified number of times. While Loop: While loop executes a block of code as long as the specified condition is true. Do…While Loop: Do...While loop will always execute the block of code once, it will then check the condition, and repeat the loop while the specified condition is true.

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PHP Lecture 2 - Conditional Statement, Loop

1. WEB DEVELOPMENT

2. PHP PRESENTATORS MD. AL-MAMUN SARKAR

3. PHP Conditional Statement Loop 1 2

4. Conditional Statement if Statement if-else statement 1 2 Nested if-else3 Switch4

5. if statement if (condition) { code to be executed if condition is true; } 2

6. if-else statement if (condition) { code to be executed if condition is true; } else { code to be executed if condition is false; } 2

7. Nested if-else if (condition) { code to be executed if this condition is true; } elseif (condition) { code to be executed if this condition is true; } else { code to be executed if all conditions are false; }

8. Nested if-else switch (n) { case label1: code to be executed if n=label1; break; case label2: code to be executed if n=label2; break; case label3: code to be executed if n=label3; break; ... default: code to be executed if n is different from all labels; } 2

9. Loops while loop2 do while loop3 foreach4 For loop1

10. While Loop while (condition is true) { code to be executed; }

11. For Loop for (init counter; test counter; increment counter) { code to be executed; }

12. Do while Loop do { code to be executed; } while (condition is true);

13. Foreach Loop foreach ($array as $value) { code to be executed; }

14. QUESTION ?

15. THANK YOU

PHP Lecture 2 - Conditional Statement, Loop

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