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PHP Date Exercises : Calculate number of days between two dates

PHP date: Exercise-7 with Solution

Write a PHP script to calculate number of days between two dates.

Sample Solution:

PHP Code:

<?php
$to_date = time(); // Input your date here e.g. strtotime("2014-01-02")
$from_date = strtotime("2012-01-31");
$day_diff = $to_date - $from_date;
echo floor($day_diff/(60*60*24))."\n";
?>

Sample Output: 

1988

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

Flowchart :

Flowchart: Calculate number of days between two dates

PHP Code Editor:

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Previous: Write a PHP script to convert the date to timestamp.
Next: Write a PHP script to get the first and last day of a month from a specified date.

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