(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.0)
NumberFormatter::parse -- numfmt_parse — Parse a number
面向对象风格
过程化风格
Parse a string into a number using the current formatter rules.
fmtNumberFormatter object.
type
The
formatting type to use. By default,
NumberFormatter::TYPE_DOUBLE is used.
positionOffset in the string at which to begin parsing. On return, this value will hold the offset at which parsing ended.
The value of the parsed number or FALSE on error.
Example #1 numfmt_parse() example
<?php
$fmt = numfmt_create( 'de_DE', NumberFormatter::DECIMAL );
$num = "1.234.567,891";
echo numfmt_parse($fmt, $num)."\n";
echo numfmt_parse($fmt, $num, NumberFormatter::TYPE_INT32)."\n";
?>
Example #2 OO example
<?php
$fmt = new NumberFormatter( 'de_DE', NumberFormatter::DECIMAL );
$num = "1.234.567,891";
echo $fmt->parse($num)."\n";
echo $fmt->parse($num, NumberFormatter::TYPE_INT32)."\n";
?>
以上例程会输出：
1234567.891 1234567
'en_EN':
basically the first part is the language and the second part the region:
'en_EN' - english, England
'en_US' - english, United States
You can lookup the language tags like 'en_EN' here:
https://datahub.io/core/language-codes
see "ietf-language-tags"
to parse English use this format: 'en_EN' . I had to guess. I have no idea where you would find these codes.
<?php
echo "<pre>";
$fmt = numfmt_create( 'en_EN', NumberFormatter::DECIMAL );
$num = "1,234,567.891";
echo numfmt_parse($fmt, $num)."\n";
echo numfmt_parse($fmt, $num, NumberFormatter::TYPE_INT32)."\n";
echo "</pre>";
?>
If this doesn't work well all I can say is it shouldn't work because it makes no sense that you would repeat the code twice "en and EN" in one code. Stuff that makes no sense is hard to guess. I couldn't find a page that has these codes either. I guess documentation is bound to be incomplete since it's so voluminous. Documentation has a language and syntax unto itself yet there are no tutorials on understanding documentation.
It interesting to note that the expected behavior for this function may change according to your ICU version.
In ICU 4.4.2 (standard for Ubuntu 10.* with PHP 5.3.5)
With locale 'en', input of 100,1 returns 1001
In ICU 4.8.1 (standard for Ubuntu 12.* with PHP 5.3.10)
With locale 'en', input of 100,1 returns "false"
Be sure to note your ICU version in phpinfo() to be sure you will get the expected output.