小学数学公式大全
微信H5支付无法唤起APP支付的问题
因为请求头部少了“Sec-Fetch-User: ?1”就不行了,可能和微信的安全机制有关
继续阅读nginx: [emerg] could not build server_names_hash, you should increase server_names_hash_bucket_size: 32
把server_names_hash_bucket_size改大点即可,可以改成64或128试下,放在http {}里
| Syntax: | server_names_hash_bucket_size size; |
|---|---|
| Default: | server_names_hash_bucket_size 32|64|128; |
| Context: | http |
Sets the bucket size for the server names hash tables. The default value depends on the size of the processor’s cache line. The details of setting up hash tables are provided in a separate document.
error: Found option without preceding group in config file: /etc/mysql/conf.
可能是少了[mysqld]?可以试下
[mysqld]
innodb_file_per_table
innodb_file_format = Barracuda
Warning: World-writable config file ‘/etc/mysql/conf.d/my.cnf’ is ignored
权限太开放 改下就好了
chmod 644 /etc/mysql/conf.d/my.cnf
chown mysql:mysql /etc/mysql/conf.d/my.cnf
正则匹配所有字符(含换行符)
[\s\S]*
# 说明:空白字符+非空白字符等于全部字符
cc: fatal error: Killed signal terminated program cc1
compilation terminated.
由于内存不足make报错,开启虚拟内存即可
cc: fatal error: Killed signal terminated program cc1 compilation terminated.
请跳转至:
Entity: line 39: parser error : Entity ‘nbsp’ not defined
在 XML 中,只有 5 个预定义的实体引用,$nbsp; 应该替换为空格~
$content = Entities::replaceAllEntities($content);
在 XML 中,有 5 个预定义的实体引用:
| < | < | 小于 |
| > | > | 大于 |
| & | & | 和号 |
| ' | ‘ | 单引号 |
| " | “ | 引号 |
注释:在 XML 中,只有字符 “<” 和 “&” 确实是非法的。大于号是合法的,但是用实体引用来代替它是一个好习惯。
DOMDocumentFragment::appendXML(): Entity: line 45: parser error : PCDATA invalid Char value 8
删除多余的控制字符即可~
$val = preg_replace('/[[:cntrl:]]/mu', '', $val);