Program to find the number of days between two dates in PHP

Given two dates. The task is to find the number of days between the given dates.

**Examples:**

Input : date1 = "17-09-2018" date2 = "31-09-2018" Output: Difference between two dates: 14 days Input : date1 = "2-05-2017" date2 = "25-12-2017" Output: Difference between two dates: 237 Days

**Note:** The dates can be taken in any format. In the above example, the date is taken in dd-mm-yyyy format.

**Method 1:** In this method, first take two dates and get their differences. Below is the implementation of this method.

`<?php` ` ` `// PHP code to find the number of days` `// between two given dates` ` ` `// Function to find the difference ` `// between two dates.` `function` `dateDiffInDays(` `$date1` `, ` `$date2` `) ` `{` ` ` `// Calculating the difference in timestamps` ` ` `$diff` `= ` `strtotime` `(` `$date2` `) - ` `strtotime` `(` `$date1` `);` ` ` ` ` `// 1 day = 24 hours` ` ` `// 24 * 60 * 60 = 86400 seconds` ` ` `return` `abs` `(` `round` `(` `$diff` `/ 86400));` `}` ` ` `// Start date` `$date1` `= ` `"17-09-2018"` `;` ` ` `// End date` `$date2` `= ` `"31-09-2018"` `;` ` ` `// Function call to find date difference` `$dateDiff` `= dateDiffInDays(` `$date1` `, ` `$date2` `);` ` ` `// Display the result` `printf(` `"Difference between two dates: "` ` ` `. ` `$dateDiff` `. ` `" Days "` `);` `?>` |

**Output:**

Difference between two dates: 14 Days

**Method 2** Using date_diff() Function: The date_diff() function is an inbuilt function in PHP which is used to calculate the difference between two dates. This function returns a DateInterval object on the success and returns FALSE on failure.

**Example:**

`<?php` ` ` `// PHP code to find the number of days` `// between two given dates` ` ` `// Creates DateTime objects` `$datetime1` `= date_create(` `'17-09-2018'` `);` `$datetime2` `= date_create(` `'25-09-2018'` `);` ` ` `// Calculates the difference between DateTime objects` `$interval` `= date_diff(` `$datetime1` `, ` `$datetime2` `);` ` ` `// Display the result` `echo` `$interval` `->format(` `'Difference between two dates: %R%a days'` `);` `?>` |

**Output:**

Difference between two dates: +8 days