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PHP7.4 json_encode 造成float数据精度异常情况

知其黑、受其白发布时间：2022-08-30 10:31:03 ，浏览量：6

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解决方法
事情起因
serialize_precision 解释

解决方法

修改 php.ini 里的 serialize_precision 的值为 -1 即可;然后重启下开发环境。

serialize_precision = -1

不修改配置文件的方案下在代码添加 ini_set：


    
        
            
                
                
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	请求信息 : 2025-08-09 10:50:40 HTTP/2.0 GET : /home/article/detail/id/437900.html
运行时间 : 0.0576s ( Load:0.0158s Init:0.0016s Exec:0.0273s Template:0.0129s )
吞吐率 : 17.36req/s
内存开销 : 1,924.12 kb
查询信息 : 18 queries 0 writes 
文件加载 : 36
缓存信息 : 5 gets 0 writes 
配置加载 : 132
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	[2] session_save_path(): open_basedir restriction in effect. File(/var/lib/php/session) is not within the allowed path(s): (/www/wwwroot/www.chaojiit.com/:/tmp/) /www/wwwroot/www.chaojiit.com/ThinkPHP/Common/functions.php 第 1239 行.
[8192] Array and string offset access syntax with curly braces is deprecated /www/wwwroot/www.chaojiit.com/ThinkPHP/Library/Think/Cache/Driver/File.class.php 第 59 行.
[8] Undefined variable: user /www/wwwroot/www.chaojiit.com/Application/Runtime/Cache/Home/3c8a1a47a3534a7b1252c226abfc3928.php 第 37 行.
[8] Undefined variable: user /www/wwwroot/www.chaojiit.com/Application/Runtime/Cache/Home/3c8a1a47a3534a7b1252c226abfc3928.php 第 98 行.
[8] Trying to access array offset on value of type null /www/wwwroot/www.chaojiit.com/Application/Runtime/Cache/Home/3c8a1a47a3534a7b1252c226abfc3928.php 第 98 行.
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0.0576s