How Can I Convert PHP Files to Static HTML Using PowerShell?

I'm a total newbie looking to convert over 2000 dynamic PHP files into static HTML files for archiving my website. The PHP files are pretty simple, mostly containing five lines of PHP for Title and Description, along with an include for a header file that sets up the page structure. I also need to consider a small number of scripts in my '/scripts' folder. Before running the PowerShell script I've created, I'd like some feedback to ensure it's functioning correctly. Here's my script:

```powershell
# --- Configuration ---
$sourceDir = "C:pathtoyourphp_files"
$targetDir = "C:pathtoyourhtml_output"
$cssDir = "C:pathtoyourphp_filescss"
$imgDir = "C:pathtoyourphp_filesimages"

if (!(Test-Path $targetDir)) { New-Item -ItemType Directory -Path $targetDir }

# --- Helper Function for Robust Extraction ---
function Get-PhpVar {
param($pattern, $content, $default)
# This regex looks for: $variable_name = "value"; OR $array['key'] = "value";
# It accounts for optional spaces and different quote types.
if ($content -match $pattern) { return $Matches[1].Trim() }
return $default
}

$phpFiles = Get-ChildItem -Path $sourceDir -Filter "*.php"

foreach ($file in $phpFiles) {
Write-Host "Converting: $($file.Name)" -ForegroundColor Cyan
$content = Get-Content -Path $file.FullName -Raw

# Flexible Extraction Patterns
$titlePattern = '(?i)$(?:page)?title(?:[[''"]title[''"]])?s*=s*[''"](.+?)[''"]s*;'
$descPattern = '(?i)$(?:meta)?description(?:[[''"]description[''"]])?s*=s*[''"](.+?)[''"]s*;'
$canonPattern = '(?i)$(?:page)?canonical(?:[[''"]canonical[''"]])?s*=s*[''"](.+?)[''"]s*;'

$title = Get-PhpVar $titlePattern $content "Default Title"
$desc = Get-PhpVar $descPattern $content ""
$canon = Get-PhpVar $canonPattern $content $file.Name.Replace(".php", ".html")

# Process PHP Includes
$content = [regex]::Replace($content, '(?i)(?:include|require)(?:_once)?s*(?s*[''"](.+?.php)[''"]s*)?s*;', {
param($m)
$includePath = Join-Path $sourceDir $m.Groups[1].Value
if (Test-Path $includePath) { return Get-Content $includePath -Raw }
return ""
})

# Clean remaining PHP and assemble HTML5
$cleanBody = $content -replace '(?s)<?php.*??>', ''

$htmlOutput = @"

$cleanBody

"@

# Link Replacement (.php -> .html)
$htmlOutput = $htmlOutput -replace 'hrefs*=s*["'']([^"'']+.)php(["'']?)', 'href="$1html$2'

# Save
$newName = $file.BaseName + ".html"
$htmlOutput | Out-File -FilePath (Join-Path $targetDir $newName) -Encoding utf8
}

# --- Asset Migration ---
Write-Host "Syncing Assets..." -ForegroundColor Green
@($cssDir, $imgDir) | ForEach-Object {
if (Test-Path $_) {
$folderName = Split-Path $_ -Leaf
Copy-Item -Path $_ -Destination (Join-Path $targetDir $folderName) -Recurse -Force
}
}

Write-Host "Success! Your site is now static HTML5." -ForegroundColor Goldenrod
```