Uso e exemplo da função PHP date_modify()

PHP Date & Time Function Manual

The date_modify() function modifies the value of the date-time (DateTime) object

Definition and usage

The date_modify() function is an alias of DateTime::modify(). This function is used to modify the date in the DateTime object. It changes the timestamp of the given object.

Syntax

date_modify($object, $modify)

Parameter

Return value

　Returns the modified DateTime object. If it fails, this function will return a boolean valuefalse.

PHP version

This function was initially introduced in PHP version5.2introduced in version 5.2.0 and can be used in all higher versions.

Online example

The following examples demonstratedate_modify()function usage-

<?php
　　　//Modify date
　　　$date　=　date_modify(new　DateTime(), "+15　day");　　　
　　　print("Date:　".date_format($date, "Y/m/d");
?>

Output result

Date:　2020/05/21

Online example

The following example creates a DateTime object and usesdate_modify()function to modify its date.-

<?php
　　　//Create a DateTime object
　　　$date_time_Obj　=　date_create("25-09-1989");
　　　print("Original date:　".date_format($date_time_Obj, "Y/m/d");
　　　print("\n");
　　　//Set date
　　　$date　=　date_modify($date_time_Obj, "+15　years　7　months　23　days");　　　
　　　print("Modify date:　".date_format($date, "Y/m/d");
?>

Output result

Original date:　1989/09/25
Modify date:　2005/05/18

Online example

You can also modify the date by specifying the number of weeks, such as

<?php
　　　//Create DateTime object
　　　$date_time_Obj　=　date_create("25-09-1989");
　　　print("Original date:　".date_format($date_time_Obj, "Y/m/d");
　　　print("\n");
　　　//Set date
　　　$date　=　date_modify($date_time_Obj, "1960　weeks");　　　
　　　print("Modify date:　".date_format($date, "Y/m/d");
?>

This will produce the following output-

Original date:　1989/09/25
Modify date:　2027/04/19

Online example

<?php
　　　$date　=　new　DateTime("1990-12-12");
　　　$date->modify("+1　day");
　　　
　　　echo　$date->format("Y-m-d");
?>

This will produce the following output-

1990-12-13