大约有 40,000 项符合查询结果(耗时:0.0298秒) [XML]
?: operator (the 'Elvis operator') in PHP
I saw this today in some PHP code:
5 Answers
5
...
Regex lookahead, lookbehind and atomic groups
...ely follow, and stop as backtracking is disabled
A non-atomic group will allow backtracking; if subsequent matching ahead fails, it will backtrack and use alternative patterns until a match for the entire expression is found or all possibilities are exhausted.
(foo|foot)s applied to foots will:
...
How to remove duplicate values from a multi-dimensional array in PHP
How can I remove duplicate values from a multi-dimensional array in PHP?
19 Answers
19...
Amazon S3 Change file download name
...mention that it was not me to provide the right answer on Amazon forum and all credits should go to Colin Rhodes ;-)
share
|
improve this answer
|
follow
|
...
What is a Question Mark “?” and Colon “:” Operator Used for? [duplicate]
...ternary operator but not the ternary operator. Major languages (C#, Java, PHP) consider it a conditional operator, and call it the ?: operator. Occasionally (JavaScript) it is called the conditional operator.
– Sheepy
May 30 '14 at 8:02
...
Iterate over each line in a string in PHP
I have a form that allows the user to either upload a text file or copy/paste the contents of the file into a textarea. I can easily differentiate between the two and put whichever one they entered into a string variable, but where do I go from there?
...
PHP array: count or sizeof?
To find the number of elements in a PHP $array , which is faster/better/stronger?
7 Answers
...
HTTP redirect: 301 (permanent) vs. 302 (temporary)
...ern browsers cache 301s and won't bother requesting the original source at all for up to 6 months
– Jon
Mar 29 '16 at 16:21
35
...
What is the difference between self::$bar and static::$bar in PHP?
...keyword. In this case, your Foo class defines a protected static property called $bar. When you use self in the Foo class to refer to the property, you're referencing the same class.
Therefore if you tried to use self::$bar elsewhere in your Foo class but you had a Bar class with a different value ...
What is your preferred php deployment strategy? [closed]
...red any disadvantages for having a svn co as a production environment? I really can't think of any disadvantages but it doesn't seem "clean" to have a svn co as production? Why not an svn export or rsync?
– ChrisR
Nov 10 '10 at 18:11
...
