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PHP mkdir: Permission denied problem

I am trying to create a directory with PHP mkdir function but I get an error as follows: Warning: mkdir() [function.mkdir]: Permission denied in ... . How to settle down the problem? ...
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What is the difference between self::$bar and static::$bar in PHP?

...atic, you're invoking a feature called late static bindings (introduced in PHP 5.3). In the above scenario, using self will result in Foo::$bar(1234). And using static will result in Bar::$bar (4321) because with static, the interpreter takes takes into account the redeclaration within the Bar clas...
https://www.tsingfun.com/it/tech/1391.html 

程序员之网络安全系列(四):数据加密之非对称秘钥 - 更多技术 - 清泛网 -...

...加密之对称加密算法 我们对数据进行了加密 但是上面的问题是明明和丽丽必须提前知道秘钥,但是如果双方提前不知道秘钥,那么明明就需要“隔壁的王叔叔” 把秘钥告诉丽丽,这个显然是风险太大了,因为”隔壁王叔叔“...
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SSH免密码登陆教程 - 环境配置 - 清泛IT社区,为创新赋能!

...用户自己有写权限。否则验证无效。(今天就是遇到这个问题,找了好久问题所在),其实仔细想想,这样做是为了不会出现系统漏洞
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MIT官方已升级至2.71版本,几乎就是仅增加一个全新主题 - App Inventor 2 ...

...tBot 组件添加了一个新块 ConverseWithImage 来询问有关图像的问题API 密钥需要为 gpt-4 付费) 3、调色板类别可以独立展开/折叠 4、MIT App Inventor 的主体现在通过 CloudFlare 内容交付网络加载。这应该可以更快地启动 MIT App Inventor。 ...
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PHP exec() vs system() vs passthru()

... portability has to be sacrificed for functionality. There are some things PHP just can't do well. – Frank Crook Apr 9 '09 at 5:10 30 ...
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PHP大潮将至 PHP近年发展分析 - 创意 - 清泛网 - 专注C/C++及内核技术

PHP大潮将至 PHP近年发展分析作者通过自己对PHP近年发展的分析,认为PHP凭借它的简单、开发快速和扩展性强,在企业级应用上会有大的发展前景。您觉得呢?说起PHP近几年的发展,可以说是突飞猛进。EDC在2006年的统计信息表明P...
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Get data from JSON file with PHP [duplicate]

I'm trying to get data from the following JSON file using PHP. I specifically want "temperatureMin" and "temperatureMax". 3...
https://www.tsingfun.com/ilife/tech/309.html 

中关村服务辐射百万创业者 - 资讯 - 清泛网 - 专注C/C++及内核技术

...境下更好地帮到创业者,成为摆在创业服务业面前的最大问题。6月25日,清控科创携手清华控股、北极光创投、完美时空、银杏天使、创业邦、盛景网联、中文在线、悦高明德,联合发布了“清青创——创业星·穿越计划”(以...
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PHP json_decode() returns NULL with valid JSON?

... On my server, it doesn't. And I can't call json_last_error() because it's PHP 5.2.9. That function appears on PHP 5.3.0. – Joel A. Villarreal Bertoldi Mar 9 '10 at 15:54 1 ...