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Safely remove migration In Laravel

... I accidentally created a migration with a bad name (command: php artisan migrate:make). I did not run (php artisan migrate) the migration, so I decided to remove it. My steps: Manually delete the migration file under app/database/migrations/my_migration_file_name.php Reset the compos...
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Best way to initialize (empty) array in PHP

...creation and instantiation. I wonder whether there are any equivalences in PHP? 8 Answers ...
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C语言结构体里的成员数组和指针 - c++1y / stl - 清泛IT社区,为创新赋能!

...问0x4的内存地址,不crash才怪。于是,你一定会有如下的问题:1)为什么不是 13行if语句出错?f.a被初始化为空了嘛,用空指针访问成员变量为什么不crash?2)为什么会访问到了0x4的地址?靠,4是怎么出来的?3)代码中的第4行...
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Increasing nesting function calls limit

There is one very bad limit in PHP: if you call some function a1() that calls a2(), that calls a3... so when a99() will call a100() you will see ...
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贝因美创始人谈连续创业 谢宏:蓝海策略下的未来赢家 - 资讯 - 清泛网 - 专...

...们怎么认识这个世界,了解这个世界,方法论是怎么解决问题,价值论是怎么评价价值,认知价值,创造价值。我们如果能够把这些思维用在创业创新过程当中,它是技术普适性的,这是我很重要的一个体会。 现在,我们企业...
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How to get WordPress post featured image URL

... Check the code below and let me know if it works for you. <?php if (has_post_thumbnail( $post->ID ) ): ?> <?php $image = wp_get_attachment_image_src( get_post_thumbnail_id( $post->ID ), 'single-post-thumbnail' ); ?> <div id="custom-bg" style="background-image: ur...
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PHP - Get key name of array value

...f you're sorting, use asort (asort($arr)). This maintains the key values. php.net/manual/en/function.asort.php – Rich701 Mar 9 '17 at 16:26 add a comment  |...
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京东618:算法让UV价值提升200%+,用智能卖场缩短购物路径 - 更多技术 - 清...

...区画像,除了界面的差异,两者在后端的处理上要解决的问题有什么不同?对推荐搜索和移动研发、交易平台研发的协作有什么样的要求? 智能卖场团队:这两者要解决的问题本质上是相同的,所以用的算法引擎是相同的。但...
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Parsing a string into a boolean value in PHP

Today I was playing with PHP, and I discovered that the string values "true" and "false" are not correctly parsed to boolean in a condition, for example considering the following function: ...
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php中json_decode()和json_encode()的使用方法 - 更多技术 - 清泛网 - 专注C/C++及内核技术

php中json_decode()和json_encode()的使用方法1.json_decode()json_decode(PHP 5 >= 5.2.0, PECL json >= 1.2.0)json_decode — 对 JSON 格式的字符串进行编码说明mixed jso...1.json_decode() (PHP 5 >= 5.2.0, PECL json >= 1.2.0) 对 JSON 格式的字符串进行编码 说明: mix...