PHP and the Runtime Environment
PHP-FPM慢日志列出某个插件文件，就能认定它是全部原因吗
FPM慢日志可在请求达到设定条件时记录执行栈，帮助定位当时停留的位置，但它不是完整性能剖析，也不能只凭出现某个插件路径就认定该插件消耗了全部时间…
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PHP and the Runtime Environment
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PHP and the Runtime Environment
OPcache显示缓存满了就无限加内存吗？先看脚本量和重启信息
OPcache容量评估应同时查看可用内存、已缓存脚本、命中与重启原因等信息。缓存空间不足可能需要调整，但无限增加内存并不能修复重复发布目录、异常…
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PHP and the Runtime Environment
PHP文件已上传却仍执行旧代码，OPcache应该怎样核对而不是乱重启
OPcache保存编译后的PHP代码，部署后的旧行为可能与缓存检查策略、运行进程、发布路径或其他应用缓存有关。应先确认实际执行的是哪份文件，再决…
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PHP and the Runtime Environment
改了php.ini为什么数值没变？扫描目录、FPM池和面板覆盖怎样排查
PHP配置可能来自主配置、额外扫描文件、运行池或目录级设置，且不同指令允许修改的位置不同。改到一个php.ini文件不等于目标站点已经采用它；应…
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PHP and the Runtime Environment
PHP扩展已经安装，WordPress仍说缺少扩展，怎样检查它是否真正加载
扩展文件存在或安装器显示成功，并不等于网站当前PHP进程已经加载它。应检查实际SAPI、版本、扩展配置与启动错误，区分装错版本、未启用、依赖缺失…
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PHP and the Runtime Environment
终端显示的PHP版本和WordPress后台不同，先看运行的是哪个程序
命令行中的php和网站使用的PHP-FPM可能来自不同安装、版本和配置。终端执行成功不证明网页环境兼容，面板切换网站PHP也不一定改变PATH中…
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PHP and the Runtime Environment
上传目录禁用PHP执行后，怎样验证规则确实只作用于目标目录？
禁止上传目录执行脚本应落实到实际Web服务器和PHP处理链。放置一份适用于其他服务器的规则文件，未必生效；验收既要检查脚本不能执行，也要确认正常…
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PHP and the Runtime Environment
发现陌生PHP文件，隔离前应保留哪些可核查证据？
未知PHP文件应先在不执行它的前提下保存必要证据，再决定隔离和替换。直接在浏览器打开可疑脚本、立即删除全部同名文件，都会增加风险或破坏后续判断文…
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PHP and the Runtime Environment
WordPress高峰排队就加pm.max_children？先算PHP-FPM内存预算
pm.max_children限制PHP-FPM同时处理请求的子进程数量。排队不一定靠调大解决：还需检查单请求耗时、实际进程内存、数据库及整机余…
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PHP and the Runtime Environment
Why does the PMax final URL extension redirect to an inappropriate page? How can I restrict the range of pages?
Once the PMax final URL extension is enabled, ads may be directed to other pages that the system deems more relevant. Page feeds do not always limit the scope to URLs within the list. You should check the actual extension pages and exclude...
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PHP and the Runtime Environment
切换PHP版本后WordPress报错，怎样做兼容性回退？
切换PHP版本后网站报错，应先恢复可用运行环境，再定位不兼容的主题、插件或自定义代码。PHP版本符合WordPress要求，不代表站上每一个扩展…
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PHP and the Runtime Environment
admin-ajax.php请求很慢，怎样找出是谁在调用？
admin-ajax.php很慢，不代表这个文件本身损坏。它是多个WordPress功能共用的请求入口。诊断关键是找出请求中的action、发起…
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