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How can I select and upload multiple files with HTML and PHP, using HTTP POST?
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This is possible in HTML5. Example (PHP 5.4):
<!doctype html>
<html>
<head>
<title>Test</title>
</head>
<body>
<form method="post" enctype="multipart/form-data">
<input ...
How to validate an email address in PHP
...k out this list for tests (both failed and succeeded) of the regex used by PHP's filter_var() function.
Even the built-in PHP functions, email clients or servers don't get it right. Still in most cases filter_var is the best option.
If you want to know which regex pattern PHP (currently) uses to ...
Regex: match everything but specific pattern
...thing but a string starting with a specific pattern (specifically index.php and what follows, like index.php?id=2342343 )
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?: operator (the 'Elvis operator') in PHP
I saw this today in some PHP code:
5 Answers
5
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Reference: What is variable scope, which variables are accessible from where and what are “undefined
What is "variable scope" in PHP? Are variables from one .php file accessible in another? Why do I sometimes get "undefined variable" errors?
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getenv() vs. $_ENV in PHP
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According to the php documentation about getenv, they are exactly the same, except that getenv will look for the variable in a case-insensitive manner. Most of the time it probably doesn't matter, but one of the comments on the documentation...
为何谷歌不可复制？ - 资讯 - 清泛网 - 专注C/C++及内核技术
...可使用并从中受益，那么糟糕的广告(即信息)就自然是个问题了。因此，即使牺牲周末时间，他们也决定解决这个问题。”
谷歌之所以成为后德鲁克时代最具代表性的公司，除了两位创始人的学院派的作风外，谷歌公司也延续...
搭建高可用mongodb集群（一）——配置mongodb - 大数据 & AI - 清泛网 - 专...
...储、高可扩展性和高可用性这些难题。不过就是因为这些问题Nosql诞生了。
NOSQL有这些优势：
大数据量，可以通过廉价服务器存储大量的数据，轻松摆脱传统mysql单表存储量级限制。
高扩展性，Nosql去掉了关系数据库的关系型...
Fastest way to check if a string is JSON in PHP?
... It's worth noting that this works correctly in theory. Unfortunately PHP's json_decode function has a number of bugs, which will allow invalid JSON to be parsed in odd ways. isJson('0123') should return false because 0123 is not JSON, however isJson('123') should return true because 123 is JSO...
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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