大约有 40,000 项符合查询结果（耗时：0.0382秒） [XML]
Get first key in a (possibly) associative array?
...
2019 Update
Starting from PHP 7.3, there is a new built in function called array_key_first() which will retrieve the first key from the given array without resetting the internal pointer. Check out the documentation for more info.
You can use reset and key:
reset($array);
$first_key = key(...
jQuery.inArray(), how to use it right?
...
The right way of using inArray(x, arr) is not using it at all, and using instead arr.indexOf(x).
The official standard name is also more clear on the fact that the returned value is an index thus if the element passed is the first one you will get back a 0 (that is falsy in Javascr...
What's valid and what's not in a URI query?
...t are delimited by characters in the "reserved" set. These characters are called "reserved" because they may (or may not) be defined as delimiters by the generic syntax, by each scheme-specific syntax, or by the implementation-specific syntax of a URI's dereferencing algorithm. If data for a URI com...
Add new methods to a resource controller in Laravel
...like the example here laravel.com/docs/5.1/routing#route-parameters). Ideally I'd like to pass the parameter to run in FooController.
– ATutorMe
Jan 8 '16 at 7:13
...
解决：Apache is running a threaded MPM,but your PHP Modle is not compi...
解决：Apache is running a threaded MPM,but your PHP Modle is not compiled to be threadsafe. You need to recompile PHP.Apache和PHP环境运行时报错：Apache is running a threaded MPM,but your PHP Modle is not compiled to be threadsafe. Yo...Apache和PHP环境运行时报错：Apache is runnin...
【解决】linux apache2 php7 不解析php文件的几种可能 - 更多技术 - 清泛网...
【解决】linux apache2 php7 不解析php文件的几种可能linux-apache2-php7-not-execute1、可能是没启用php模块导致，解决方法：a2enmod php7 0systemctl restart apache22、正常情况下，启用php模块后无需其他配置，就能自动识别php文件，如果还是不行请...
Saving timestamp in mysql table using php
...But when I pass the timestamp ( 1299762201428 ) to the record, it automatically saves the value 0000-00-00 00:00:00 into that table.
...
JavaScript isset() equivalent
...
I generally use the typeof operator:
if (typeof obj.foo !== 'undefined') {
// your code here
}
It will return "undefined" either if the property doesn't exist or its value is undefined.
(See also: Difference between undefi...
using gitignore to ignore (but not delete) files
...remote repo. How can I stop tracking changes to this directory, but still allow it to exist? I also need to do this for 1 file, but changes to that also show up in git status after .gitignore ing them. What should I do?
...
PHP String to Float
I am not familiar with PHP at all and had a quick question.
8 Answers
8
...