PHP – 第 2 页 – 刘满博客

PHP Driver	PHP 5.3	PHP 5.4	PHP 5.5	PHP 5.6	PHP 7.0	HHVM 3.9
mongodb-1.1		✓	✓	✓	✓	✓
mongodb-1.0		✓	✓	✓		✓
mongo-1.6	✓	✓	✓	✓
mongo-1.5	✓	✓	✓	✓

下载mongodb之后使用phpize安装

phpize
./configure --with-php-config=/usr/local/php/bin/php-config
make
make install
#php.ini加
extension =mongodb.so
php composer.phar require jenssegers/mongodb

提示错误，php扩展mbstring错误，用phpize编译安装mbstring

Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - danielstjules/stringy 1.10.0 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system.
    - danielstjules/stringy 1.10.0 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system.
    - danielstjules/stringy 1.10.0 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system.
    - Installation request for danielstjules/stringy == 1.10.0.0 -> satisfiable by danielstjules/stringy[1.10.0].


Installation failed, reverting ./composer.json to its original content.

Laravel错误

5.1在php7环境上运行出现的错误

Fatal error: Uncaught ReflectionException: Class log does not exist in /home/liuman/jlcloud2/vendor/laravel/framework/src/Illuminate/Container/Container.php:736 Stack trace: #0 /home/liuman/jlcloud2/vendor/laravel/framework/src/Illuminate/Container/Container.php(736): ReflectionClass->__construct(‘log’) #1 /home/liuman/jlcloud2/vendor/laravel/framework/src/Illuminate/Container/Container.php(626): Illuminate\Container\Container->build(‘log’, Array) #2 /home/liuman/jlcloud2/vendor/laravel/framework/src/Illuminate/Foundation/Application.php(674): Illuminate\Container\Container->make(‘log’, Array) #3 /home/liuman/jlcloud2/vendor/laravel/framework/src/Illuminate/Container/Container.php(837): Illuminate\Foundation\Application->make(‘log’) #4 /home/liuman/jlcloud2/vendor/laravel/framework/src/Illuminate/Container/Container.php(800): Illuminate\Container\Container->resolveClass(Object(ReflectionParameter)) #5 /home/liuman/jlcloud2/vendor/laravel/framework/src/Illuminate/Container/Container.php(769): Illuminate\Container\Container in /home/liuman/jlcloud2/vendor/laravel/framework/src/Illuminate/Container/Container.php on line 736

解决方案：

删除vendor文件夹和composer.lock

composer install

laravel 500错误是storage没有权限

解决方案：chmod -R 777 storage

cache错误

file_put_contents(/..cache/services.json): failed to open stream: Permission denied

解决方案：sudo php artisan cache:clear

php composer.phar install报错

先安装composer，然后运行php composer.phar install –no-scripts

PDO错误，已安装PDO还提示

[PDOException]
SQLSTATE[HY000] [2002] No such file or directory

解决方案：将.env下的DB_HOST＝localhost改为DB_HOST＝127.0.0.1

SQLSTATE[HY000] [1045]

解决方案：
php artisan cache:clear
php artisan config:clear

php artisan 没反应

composer dumpautoload

The only supported ciphers are AES-128-CBC and AES-256-CBC with the correct key lengths.

php artisan key:generate

[Dotenv\Exception\InvalidFileException]
Dotenv values containing spaces must be surrounded by quotes.

.env文件中文或者空格必须加引号

OpenSSL extension is required

打开php.ini启用php_openssl

Key path “file://storage\oauth-public.key” does not exist or is not readable

php artisan passport:install

[Composer\Downloader\TransportException] The “https://packagist.phpcomposer.com/p/provider-2017-07%24c3e8d929d5d06fa b76cef9c5b5e4305dbe89c1599b79e63eee70490a6b8df914.json” file could not be d ownloaded (HTTP/1.1 404 Not Found)

composer diagnose

[ErrorException] proc_open(): fork failed – Cannot allocate memory

/bin/dd if=/dev/zero of=/var/swap.1 bs=1M count=1024

/sbin/mkswap /var/swap.1

/sbin/swapon /var/swap.1

LogicException Key path “file:///storage/oauth-public.key” does not exist or is not readable

chown www-data:www-data storage/oauth-*.key

chmod 600 storage/oauth-*.key

[Illuminate\Database\QueryException] SQLSTATE[42000]: Syntax error or access violation: 1071 Specified key was too long; max key length is 767 bytes (SQL: alter table users add unique users_email_unique(email))

AppServiceProvider.php

use Illuminate\Support\Facades\Schema;

public function boot()
{
    Schema::defaultStringLength(191);
}

Illuminate\Database\QueryException : SQLSTATE[HY000] [2054] The server requested authentication method unknown to the client

C:\ProgramData\MySQL\MySQL Server 8.0\my.ini里default_authentication_plugin=caching_sha2_password改default_authentication_plugin=mysql_native_password

exception:”InvalidArgumentException”
file:”C:\web\jinguan\vendor\laravel\framework\src\Illuminate\Http\JsonResponse.php”
line:75
message:”Malformed UTF-8 characters, possibly incorrectly encoded”

Event::fire错误是redis没开

Class session does not exist

chmod -R 777 bootstrap/cache

Unable to guess the mime type as no guessers are available (Did you enable the php_fileinfo extension?)

php.ini打开扩展

extension=fileinfo

php函数嵌套

public function fn1(){
  global $str;
  $str='liuman';
  function fn2(){
    echo $GLOBALS['str'];
  }    
}

php笔记

1、array_merge_recursive 当有重复的键名时，值不会被覆盖，而是将多个相同键名的值递归组成一个数组。

2、cos函数和javascript的cos不同，php的cos参数为弧度，js的cos为角度。

3、php递归使用局部变量传参地址&。

4、stripslashes取消转义。

5、json_encode($data,JSON_UNESCAPED_UNICODE)//中文不编译成Unicode编码。

PHP中钩子函数的实现与认识

假如有这么一段程序：

function fun(){
    fun1();
    fun2();    
}

首先程序执行完fun1()之后执行fun2()然后fun()结束。
但是，假如我们想对函数做一些变化。比如说，fun是一个解析函数，我们希望后期可以提供丰富的解析函数，而究竟用哪个函数解析，我们希望在配置文件中配置。这个时候就可以发挥钩子的力量了。
我们可以在function fun(){}中加入一个挂钩点H,然后再执行H这个函数之前，将钩子函数配置好，我么就可以根据需要来解析了。
例如:

$h=config_item("parser_fun") ;//从配置文件中获得相应的配置信息
function fun($data){
global $h;
return  $h();
}

除此意外，PHP还可以根据字符串提供自己的类，然后调用类的一个方法，传递某些参数，这些就为PHP程序的编写，以及后期的维护扩展奠定了，相当坚实的基础。
类的实现方法，大致如下：

$c=get_class_name(); //获得类的名字
$m=get_method_name(); //获得方法的名字
$k=$c->$m(); //执行类的某一个方法

原文链接：PHP中钩子函数&实现

PHP order by多条件排序

关于order by排序：
单条件排序
order by id（按照id排序默认从小到大）
order by id desc（按照id排序从大到小）
多条件排序
order by date,id（先按照date从小到大再按照id从小到大）
order by date,id desc（先按照date从大到小再按照id从大到小）
order by date desc,id（先按照date从大到小再按照id从小到大）

分类： PHP

laravel5、php7、mongodb学习

Laravel错误

php函数嵌套

php笔记

PHP中钩子函数的实现与认识

PHP order by多条件排序