Hi @Darshan Dalwadi ,
At the moment, Azure Monitor only provides support when using the supported SDKs which excludes PHP. There might be other community-supported Application Insights SDKs available, however, Azure Monitor only provides support when using the supported instrumentation options listed on this page.
For Servers (VMs, Physical machines) hosting the application, you can use one of Azure Monitor agents as listed in the link below (depending on the Environment, OS etc.):
Summary of Azure Monitor agents