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(Built-in) way in JavaScript to check if a string is a valid number
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This is what I was looking for, the equivalent to php ctype_digit
– Miguel Pynto
Sep 20 '19 at 11:17
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Getting visitors country from their IP
... via their IP... Right now I'm using this ( http://api.hostip.info/country.php?ip= ...... )
29 Answers
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Reference assignment operator in PHP, =&
What does the =& (equals-ampersand) assignment operator do in PHP?
4 Answers
4
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融资千万美元后的足记要如何应对“爆款后遗症”？ - 资讯 - 清泛网 - 专注C...
...作的一支短片，短片把3741位读者回答“我去何方”这个问题发来的图片和字幕连接起来，展现生活的不同可能性。
这是足记从图片出发延伸开去的路径：单张图片——多长图片——短视频——电影
“我们已经有几十部电影有...
也来说说ReactOS的调试 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...freeldr.rbuild,发现并没有fDebug,那我们自己填,怎么填?嗯是个问题.
follow me:来到这个模块所在的主目录下也就是D:\Program Files\ReactOS_src\boot\freeldr\,找到freeldr.rebuild文件打开添加下面的:
代码:
<directory name="fdebug">
<xi:include href...
“Notice: Undefined variable”, “Notice: Undefined index”, and “Notice: Undefined offset” using PHP
I'm running a PHP script and continue to receive errors like:
28 Answers
28
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Fastest Way to Serve a File Using PHP
...t's actually the best way. The basis is that you do your access control in php and then instead of sending the file yourself you tell the web server to do it.
The basic php code is :
header("X-Sendfile: $file_name");
header("Content-type: application/octet-stream");
header('Content-Disposition: at...
13 个免费学习编程的好地方 - 创意 - 清泛网 - 专注C/C++及内核技术
...算机编程入门的好地方。
GitHub
有时候，当你因为某个问题卡壳了，你需要查阅些资料，你就需要GitHub 了。在这里你可以找到 500 本免费编程书，涵盖 80 个不同的编程语言，这些书在Git 库托管服务中，这意味着会被定期更新。...
An example of how to use getopts in bash
...ic version of EspoCRM
-r, -rebuild, --rebuild Rebuild php vendor directory using composer and compiled css using grunt
-V, -verbose, --verbose Run script in verbose mode. Will print out each step of execution.
EOF
# EOF is found above and hence cat command ...
Why doesn't this code simply print letters A to Z?
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From the docs:
PHP follows Perl's convention when dealing with arithmetic operations on character variables and not C's.
For example, in Perl 'Z'+1 turns into 'AA', while in C 'Z'+1 turns into '[' ( ord('Z') == 90, ord('[') == 91 ).
Note th...