大约有 47,000 项符合查询结果（耗时：0.0207秒） [XML]
PHP YAML Parsers [closed]
Does anyone know of a good YAML Parser for PHP? If so, what are the pros and cons of this library?
8 Answers
...
Regular Expression for alphanumeric and underscores
...o or more of the given characters
$ : end of string
If you don't want to allow empty strings, use + instead of *.
As others have pointed out, some regex languages have a shorthand form for [a-zA-Z0-9_]. In the .NET regex language, you can turn on ECMAScript behavior and use \w as a shorthand (y...
How can I brew link a specific version?
...n>
Example:
brew switch mysql 5.5.29
You can find the versions installed on your system with info.
brew info mysql
And to see the available versions to install, you can provide a dud version number, as brew will helpfully respond with the available version numbers:
brew switch mysql 0
...
What's the best way to get the last element of an array without deleting it?
...lt;<option code>>s and <<input code>>s will be run on all versions of PHP. For each test run the following code snippet is used:
<<input code>> error_reporting(E_ALL); <<option code>> error_reporting(0); $before=microtime(TRUE); for($i=0;$i<100;$i+...
Are “elseif” and “else if” completely synonymous?
...tom line is that both would result in exactly the same behavior.
Essentially, they will behave the same, but else if is technically equivalent to a nested structure like so:
if (first_condition)
{
}
else
{
if (second_condition)
{
}
}
The manual also notes:
Note that elseif and els...
Double not (!!) operator in PHP
...ings or empty arrays) you will get the boolean value FALSE.
It is functionally equivalent to a cast to boolean:
return (bool)$row;
share
|
improve this answer
|
follow
...
Remove non-numeric characters (except periods and commas) from a string
...
You could use preg_replace to swap out all non-numeric characters and the comma and period/full stop as follows:
$testString = '12.322,11T';
echo preg_replace('/[^0-9,.]+/', '', $testString);
The pattern can also be expressed as /[^\d,.]+/
...
Laravel Controller Subfolder routing
...
For Laravel 5.3 above:
php artisan make:controller test/TestController
This will create the test folder if it does not exist, then creates TestController inside.
TestController will look like this:
<?php
namespace App\Http\Controllers\test;...
Foreign keys in mongo?
...
UPD. I'am using PHP as a programming language, how can I use mongoid, if it is written in Ruby?
– Mark Pegasov
Jun 13 '11 at 17:54
...
Reusing output from last command in Bash
...ng backticks: `your_cmd` According to the Gnu Bash manual they are functionally identical. Of course this is also subject to the warning raised by @memecs
– user2065875
Apr 20 '15 at 21:33
...