Application of PHP-date(), time() functions

The content of this article is to share with you the application of date() and time() functions in PHP. Friends in need can refer to it

1. Please Current timestamp (unit: seconds)

Description: The time() function returns the current time since the Unix epoch (January 1 1970 00:00:00 GMT) Seconds
Syntax: time()
For example:

//time():返回当前时间的 Unix 时间戳echo time();//例如：1516332756

2. Find the current date

Description: The date() function is used to format time/date.
Syntax: string date ( string

timestamp ] )
Parameters:
format Required. Specifies the format of the timestamp.
timestamp Optional. Specify timestamp. The default is the current date and time.
Give a chestnut:

//下面几行代码的输出结果相同（样式可能会有不同）echo date('Y-m-d H:i:s');//2018-01-19 11:56:08echo date('Y-m-d H:i:s',time());//2018-01-19 11:56:08echo date('Ymd His',time());//20180119 115608echo date('Y.m.d H:i:s',time());//2018.01.19 11:56:08

3. Find a simple implementation method for today, yesterday, and tomorrow's timestamps

echo strtotime(&#39;now&#39;),&#39;<br>&#39;;//现在:1516334071echo strtotime(&#39;today&#39;),&#39;<br>&#39;;//今天:1516291200echo strtotime(&#39;tomorrow&#39;),&#39;<br>&#39;;//明天:1516377600echo strtotime(&#39;yesterday&#39;),&#39;<br>&#39;;//昨天:1516204800echo $time_remain=strtotime(&#39;tomorrow&#39;)-time();//今天剩余的秒数-输出：43362

4. Find the last few days How to implement date

echo "今天:".date("Y-m-d")."<br>";echo "昨天:".date("Y-m-d",strtotime("-1 day")), "<br>";     
echo "明天:".date("Y-m-d",strtotime("+1 day")). "<br>";echo "一周前:".date("Y-m-d",strtotime("-1 week")). "<br>";echo "一周后:".date("Y-m-d",strtotime("+1 week")). "<br>";echo "一个月前:".date("Y-m-d",strtotime("last month"))."<br>";     
echo "一个月后:".date("Y-m-d",strtotime("+1 month"))."<br>"; 
echo "下个星期四:".date("Y-m-d",strtotime("next Thursday")). "<br>";echo "十年后:".date("Y-m-d",strtotime("+10 year"))."<br>"; 
//strtotime()函数的作用是将日期时间描述解析为 Unix 时间戳

5. Find the day of the week today is

//获取今日是星期几（英文）echo date("l");//可以获取英文的星期比如Sundayecho date("w");//这个可以获取数字星期比如1，2，3... ，注意0是星期日。//获取今日是星期几（中文）$weekarray=array("日","一","二","三","四","五","六");echo "星期".$weekarray[date("w")];

6. Attached below are some of the parameters of date()

a - "am" or " pm”
A - “AM” or “PM”
d - Day, two digits, if there are less than two digits, add zero in front; such as: “01” to “31”
D - Day of the week, three English letters; such as: “Fri”
F - month, full English name; such as: “January”
h - hour in 12-hour format; such as: “01” to “12”
H - hour in 24-hour format; such as: "00" to "23"
g - hour in 12-hour format, no zeros are added for less than two digits; such as: "1" to 12"
G - Hour in 24-hour format, do not add zero if there are less than two digits; for example: “0” to “23”
i - minute; for example: “00” to “59”
j - day, two digits, If there are less than two digits, do not add zeros; for example: "1" to "31"
l - Day of the week, full English name; For example: "Friday"
m - Month, two digits, if there are less than two digits then Add zeros in front; for example: “01” to “12”
n - month, two digits, if there are less than two digits, do not add zeros; for example: “1” to “12”
M - month, Three English letters; such as: "Jan"
s - seconds; such as: "00" to "59"
S - add an English ordinal at the end of the word, two English letters; such as: "th", "nd ”
t - The number of days in the specified month; such as: “28” to “31”
U - The total number of seconds
w - The numeric day of the week, such as: “0” (Sunday) to “6” " (Saturday)
Y - year, four digits; such as: "1999"
y - year, two digits; such as: "99"
z - day of the year; such as : "0" to "365"

1. Find the current timestamp (unit: seconds)

Description: The time() function returns the Unix epoch (January 1 1970 00:00: 00 GMT)
Syntax: time()
For example:

//time():返回当前时间的 Unix 时间戳echo time();//例如：1516332756

2. Find the current date

Description: date() function Used to format time/date.
Syntax: string date (string

#timestamp ])

Parameters:
format Required. Specifies the format of the timestamp.
timestamp Optional. Specify timestamp. The default is the current date and time.
Give a chestnut:

//下面几行代码的输出结果相同（样式可能会有不同）echo date('Y-m-d H:i:s');//2018-01-19 11:56:08echo date('Y-m-d H:i:s',time());//2018-01-19 11:56:08echo date('Ymd His',time());//20180119 115608echo date('Y.m.d H:i:s',time());//2018.01.19 11:56:08

3. Find a simple implementation method for today, yesterday, and tomorrow's timestamps

echo strtotime(&#39;now&#39;),&#39;<br>&#39;;//现在:1516334071echo strtotime(&#39;today&#39;),&#39;<br>&#39;;//今天:1516291200echo strtotime(&#39;tomorrow&#39;),&#39;<br>&#39;;//明天:1516377600echo strtotime(&#39;yesterday&#39;),&#39;<br>&#39;;//昨天:1516204800echo $time_remain=strtotime(&#39;tomorrow&#39;)-time();//今天剩余的秒数-输出：43362

4. Find the last few days How to implement date

echo "今天:".date("Y-m-d")."<br>";echo "昨天:".date("Y-m-d",strtotime("-1 day")), "<br>";     
echo "明天:".date("Y-m-d",strtotime("+1 day")). "<br>";echo "一周前:".date("Y-m-d",strtotime("-1 week")). "<br>";echo "一周后:".date("Y-m-d",strtotime("+1 week")). "<br>";echo "一个月前:".date("Y-m-d",strtotime("last month"))."<br>";     
echo "一个月后:".date("Y-m-d",strtotime("+1 month"))."<br>"; 
echo "下个星期四:".date("Y-m-d",strtotime("next Thursday")). "<br>";echo "十年后:".date("Y-m-d",strtotime("+10 year"))."<br>"; 
//strtotime()函数的作用是将日期时间描述解析为 Unix 时间戳

5. Find the day of the week today is

//获取今日是星期几（英文）echo date("l");//可以获取英文的星期比如Sundayecho date("w");//这个可以获取数字星期比如1，2，3... ，注意0是星期日。//获取今日是星期几（中文）$weekarray=array("日","一","二","三","四","五","六");echo "星期".$weekarray[date("w")];

6. Attached below are some of the parameters of date()

a - "am" or " pm”

A - “AM” or “PM”
d - Day, two digits, if there are less than two digits, add zero in front; such as: “01” to “31”
D - Day of the week, three English letters; such as: “Fri”
F - month, full English name; such as: “January”
h - hour in 12-hour format; such as: “01” to “12”
H - hour in 24-hour format; such as: "00" to "23"
g - hour in 12-hour format, no zeros are added for less than two digits; such as: "1" to 12"
G - Hour in 24-hour format, do not add zero if there are less than two digits; for example: “0” to “23”
i - minute; for example: “00” to “59”
j - day, two digits, If there are less than two digits, do not add zeros; for example: "1" to "31"
l - Day of the week, full English name; For example: "Friday"
m - Month, two digits, if there are less than two digits then Add zeros in front; for example: “01” to “12”
n - month, two digits, if there are less than two digits, do not add zeros; for example: “1” to “12”
M - month, Three English letters; such as: "Jan"
s - seconds; such as: "00" to "59"
S - add an English ordinal at the end of the word, two English letters; such as: "th", "nd ”
t - The number of days in the specified month; such as: “28” to “31”
U - The total number of seconds
w - The numeric day of the week, such as: “0” (Sunday) to “6” " (Saturday)
Y - year, four digits; such as: "1999"
y - year, two digits; such as: "99"
z - day of the year; such as : “0” to “365”

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