- PHP 手册
- 函数参考
- 国际化与字符编码支持
- intl
- IntlDateFormatter
IntlDateFormatter::localtime
datefmt_localtime
(PHP 5 >= 5.3.0, PHP 7, PHP 8, PECL intl >= 1.0.0)
IntlDateFormatter::localtime -- datefmt_localtime — Parse string to a field-based time value
说明
面向对象风格
public IntlDateFormatter::localtime(string$string, int &$offset = null): array|false
过程化风格
datefmt_localtime(IntlDateFormatter$formatter, string $string, int &$offset = null): array|false
Converts string $value to a field-based time value ( an array of various fields), starting at $parse_pos and consuming as much of the input value as possible.
参数
-
formatter -
The formatter resource
-
string -
string to convert to a time
-
offset -
Position at which to start the parsing in $value (zero-based). If no error occurs before $value is consumed, $parse_pos will contain -1 otherwise it will contain the position at which parsing ended . If $parse_pos > strlen($value), the parse fails immediately.
返回值
Localtime compatible array of integers : contains 24 hour clock value in tm_hour field,
或者在失败时返回 false.
范例
示例 #1 datefmt_localtime() example
<?php
$fmt = datefmt_create(
'en_US',
IntlDateFormatter::FULL,
IntlDateFormatter::FULL,
'America/Los_Angeles',
IntlDateFormatter::GREGORIAN
);
$arr = datefmt_localtime($fmt, 'Wednesday, December 31, 1969 4:00:00 PM PT', 0);
echo 'First parsed output is ';
if ($arr) {
foreach ($arr as $key => $value) {
echo "$key : $value , ";
}
}
?>
示例 #2 OO example
<?php
$fmt = new IntlDateFormatter(
'en_US',
IntlDateFormatter::FULL,
IntlDateFormatter::FULL,
'America/Los_Angeles',
IntlDateFormatter::GREGORIAN
);
$arr = $fmt->localtime('Wednesday, December 31, 1969 4:00:00 PM PT', 0);
echo 'First parsed output is ';
if ($arr) {
foreach ($arr as $key => $value) {
echo "$key : $value , ";
}
}
?>
以上例程会输出：
First parsed output is tm_sec : 0 , tm_min : 0 , tm_hour : 16 , tm_year : 1969 , tm_mday : 31 , tm_wday : 4 , tm_yday : 365 , tm_mon : 11 , tm_isdst : 0 ,
参见
- datefmt_create() - Create a date formatter
- datefmt_format() - Format the date/time value as a string
- datefmt_parse() - Parse string to a timestamp value
- datefmt_get_error_code() - Get the error code from last operation
- datefmt_get_error_message() - Get the error text from the last operation
User Contributed Notes 2 notes
up down 0 Patanjali ¶5 years ago
Learning lesson here: Never trust the PHP documentation. Test everything!
$position does not work as described, at least in PHP 7. After parsing without errors, it does not contain -1.
You can still use it to set the parsing start character position, but not necessarily whether any errors occurred.
To test for errors, replace my $nPosition test code in the other note with:
<?php
// Check if errors
$bError = intl_is_failure(datefmt_get_error_code(oIDF));
// If no error
if(!$bError){
// Use 'tm_hour' and 'tm_min' from the $aTime array for checking against other time values
...
}else{
// Invalid string
...
}
?>
up
down
0
Patanjali ¶5 years ago
You can use datefmt_localtime to convert a user's time string, input using their locale's script, into standard numbers for checking, using a simple HTML input element.
This avoids using clunky HTML select elements formatted with hour and minute options in the locale's script to capture user input.
<?php
// Specify locale of user
$sLocale = 'en-us'; // US English user
$sLocale = 'ar-ye'; // Yemen Arab user
// Create a date formatter for the user's locale
$oIDF = datefmt_create($sLocale, IntlDateFormatter::NONE, IntlDateFormatter::SHORT);
// Simulate a user's time input string
$sTime = datefmt_format($oIDF, ['tm_hour'=>15, 'tm_min'=>25]);
// For a US English user, $sTime = '3:25 PM'
// For a Yemen Arab user, $sTime = '٣:٢٥ م'
// Specify datefmt_locale parsing start at the beginning of the user input
$nPosition = 0;
// Convert input time string to array of standard numeric values, as per localtime() output (http://php.net/manual/en/function.localtime.php)
$aTime = datefmt_localtime($oIDF, $sTime, $nPosition);
// If no errors, $nPosition set to -1 after parsing, else character position of error
// If valid string
if($nPosition = -1){
// Use 'tm_hour' and 'tm_min' from the $aTime array for checking against other time values
...
}else{
// Invalid string
...
}
?>
add a note
官方地址：https://www.php.net/manual/en/intldateformatter.localtime.php