Detailed explanation of php date formatting method

php date formatting is generally done using date(). The declaration and definition of this function are as shown in the figure below. There are many parameters. Here, the commonly used year, month, day, A brief introduction to hours, minutes, seconds and days of the week.

1. Year, month, day formatting

Year formatting method: y: lowercase y only Display 2 digits, Y: uppercase y displays 4 digits

Tips: y is the first letter of year, the larger one is more, which means that uppercase means more numbers (4), lowercase 2 places. Examples are as follows.

2. Formatting method of month

m: The month is represented by two digits, add 0, from "01" to "12"

n: The month is represented by two digits, no 0 is added, from "1" to "12"

M: The month is represented by 3 English letters, It is the abbreviation of the English month. For example, January is expressed as Jan.

Tips: Generally, m is used to represent month in English, and it is convenient to use lowercase letters. Examples are as follows.

3. Day formatting method

d: The day is represented by two digits, add 0

j: The day is represented by two digits, do not add 0

S: Capital s plus th suffix, such as 10th

Tips: d is the first letter of day, so it is generally Use d to represent the day, and j and capital S in special cases. Examples are as follows.

The example displays today's year, month, and day in the format of year-month-day. You can also set the format according to your own needs, expressed in year, month, and day. The method is the same. Examples are as follows.

4. Formatting of hours, minutes and seconds

Formatting of hours:

G: 24-hour format , do not add 0, for example, 1 o'clock is expressed as

g: 12-hour format, do not add 0, for example, 1 o'clock is expressed as

H: 24-hour format, add 0, such as 1 o'clock is 0

h: 12-hour clock, add 0, for example, 1 o'clock is represented as 0

Tips: uppercase represents 24-hour clock, lowercase represents 12-hour clock, the letter G does not matter the size Add 0 when writing, and do not add 0 to the letter H regardless of upper or lower case. The example is as follows.

#Formatting of minutes and seconds uses i and s parameters respectively.

i: Indicates the number of minutes, add 0, from 00 to 59

s: Indicates the number of seconds, add 0, from 00 to 59

Examples are as follows.

5. Week formatting

D: The letters represent the day of the week and are expressed as the abbreviation of the day of the week.

l: Letters represent the day of the week, expressed as the full name of the day of the week

w: Numbers represent the day of the week.

Examples are as follows.

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