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PHP Date Exercises : Current month and previous three months

PHP date: Exercise-23 with Solution

Write a PHP script to get the current month and previous three months.

Sample solition:

PHP Code:

<?php
echo date("M - Y")."\n";
echo date("M - Y",strtotime("-1 Months"))."\n";
echo date("M - Y",strtotime("-2 Months"))."\n";
echo date("M - Y",strtotime("-3 Months"))."\n";
?>

Sample Output:

Jul - 2017                                                          
Jun - 2017                                                          
May - 2017                                                          
Apr - 2017

N.B.: The result may varry for your system date and time.

Flowchart :

Flowchart: Current month and previous three months

PHP Code Editor:

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Previous: Write a PHP script to get the last 6 months from the current month.
Next: Write a PHP script to increment date by one month.

What is the difficulty level of this exercise?



PHP: Tips of the Day

SQL injection that gets around mysql_real_escape_string()

Consider the following query:

$iId = mysql_real_escape_string("1 OR 1=1");    
$sSql = "SELECT * FROM table WHERE id = $iId";

mysql_real_escape_string() will not protect you against this. The fact that you use single quotes (' ') around your variables inside your query is what protects you against this. The following is also an option:

$iId = (int)"1 OR 1=1";
$sSql = "SELECT * FROM table WHERE id = $iId";

Ref : https://bit.ly/32q3bJ7