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php：获取数组第一个值 - 更多技术 - 清泛网 - 专注C/C++及内核技术
php：获取数组第一个值自PHP 5.4版本后可以使用[ ]来取数据指定位置的元素，索引从0开始，即$arr[0]取数组第一个值。不过为了兼容性，建议还是采取reset(),current(),next()等函数来取数组中的值，reset($arr)后current($arr)取第一个值。自...
How to use cURL to get jSON data and decode the data?
...rns a jSON object, and I need to have it decoded and put into variables in PHP.
6 Answers
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Which one is the best PDF-API for PHP? [closed]
Which one of these is the best PDF-API for PHP?
9 Answers
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open_basedir restriction in effect. File(/) is not within the allowed path(s):
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Modify the open_basedir settings in your PHP configuration (See Runtime Configuration).
The open_basedir setting is primarily used to prevent PHP scripts for a particular user from accessing files in another user's account. So usually, any files in your own account...
What does the PHP error message “Notice: Use of undefined constant” mean?
PHP is writing this error in the logs: "Notice: Use of undefined constant".
9 Answers
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MySQL vs MySQLi when using PHP [closed]
... page dedicated to help choosing between mysql, mysqli and PDO at
http://php.net/manual/en/mysqlinfo.api.choosing.php and
http://www.php.net/manual/en/mysqlinfo.library.choosing.php
The PHP team recommends mysqli or PDO_MySQL for new development:
It is recommended to use either the mysqli or...
微博为什么限制140字(附短信70字限制考) - 闲聊区 - 清泛IT社区，为创新赋能！
问题的提出申请过那么多的微博，数申请网易微博的动机最不纯，因为它的字数限制不是传说中的140字，而是163个字。当年觉得很可爱，于是就注册了，之后再也没登录过。今天在人人网转发状态，提示我超过140字了，突然就好...
PHP: How to generate a random, unique, alphanumeric string for use in a secret link?
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PHP 7 standard library provides the random_bytes($length) function that generate cryptographically secure pseudo-random bytes.
Example:
$bytes = random_bytes(20);
var_dump(bin2hex($bytes));
The above example will output some...
PHP cURL custom headers
I'm wondering if/how you can add custom headers to a cURL HTTP request in PHP. I'm trying to emulate how iTunes grabs artwork and it uses these non-standard headers:
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What is stdClass in PHP?
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stdClass is PHP's generic empty class, kind of like Object in Java or object in Python (Edit: but not actually used as universal base class; thanks @Ciaran for pointing this out).
It is useful for anonymous objects, dynamic properties, ...