PHP (Hypertext Preprocessor)

function UrlExists($uri) {
    try {
        Get-WebHeaders $uri | Out-Null
    }
    catch {
        if ($_ -match "unauthorized") { return $false }
        throw $_
    }
    return $true;
}

function AddArchivePathToUrl($url) {
    $newUrl = $url
    $lix = $url.LastIndexOf("/")
    if ($lix -ne -1)  {
        $newUrl = $url.SubString(0, $lix) + "/archives" + $url.SubString($lix)
    }
    return $newUrl
}

function GetDownloadInfo {
  param(
    [string]$downloadInfoFile,
    $parameters
  )
  Write-Debug "Reading CSV file from $downloadInfoFile"
  $downloadInfo = Get-Content -Encoding UTF8 -Path $downloadInfoFile | ConvertFrom-Csv -Delimiter '|' -Header 'Type','URL32','URL64','Checksum32','Checksum64'
  if ($parameters.ThreadSafe) {
    $downloadInfo | Where-Object { $_.Type -eq 'threadsafe' } | Select-Object -first 1
  } else {
    $downloadInfo | Where-Object { $_.Type -eq 'not-threadsafe' } | Select-Object -first 1
  }
}

function GetInstallLocation {
  param(
    [string]$libDirectory
  )

  Write-Debug "Checking for uninstall text document in $libDirectory"

  if (Test-Path "$libDirectory\*.txt") {
    $txtContent = Get-Content -Encoding UTF8 "$libDirectory\*.txt" | Select-Object -first 1
    $index = $txtContent.LastIndexOf('\')
    if ($index -gt 0) {
      return $txtContent.Substring(0, $index)
    }
  }

  # If we got here, the text file doesn't exist or is empty
  # we don't return anything as it may be already uninstalled
}

function GetNewInstallLocation {
  param(
    [string]$PackageName,
    [string]$Version,
    $pp
  )

  if ($pp -and $pp.InstallDir) {
    return $pp.InstallDir
  }

  $toolsLocation = Get-ToolsLocation
  return "$toolsLocation\{0}{1}" -f $PackageName, ($Version -replace '\.').Substring(0,2)
}

function UninstallPackage {
  param(
    [string]$libDirectory,
    [string]$packageName
  )
  if (Test-Path "$libDirectory\*.txt") {
    $txtFile = Resolve-Path "$libDirectory\*.txt" | Select-Object -first 1
    $fileName = ($txtFile -split '\\' | Select-Object -last 1).TrimEnd('.txt')
    Uninstall-ChocolateyZipPackage -PackageName $packageName -ZipFileName $fileName
    if (Test-Path $txtFile) {
      Remove-Item -Force -ea 0 $txtFile
    }
  }
}

if (!(Test-Path function:\Uninstall-ChocolateyPath)) {
  function Uninstall-ChocolateyPath {
    param(
      [string]$pathToRemove,
      [System.EnvironmentVariableTarget] $pathType = [System.EnvironmentVariableTarget]::User
    )

    Write-Debug "Running 'Uninstall-ChocolateyPath' with pathToRemove: `'$pathToRemove`'"

    # get the PATH variable
    Update-SessionEnvironment
    $envPath = $env:PATH
    if ($envPath.ToLower().Contains($pathToRemove.ToLower())) {
      Write-Host "The PATH environment variable already contains the directory '$pathToRemove'. Removing..."
      $actualPath = Get-EnvironmentVariable -Name 'Path' -Scope $pathType -PreserveVariables

      $newPath = $actualPath -replace [regex]::Escape($pathToRemove + ';'),'' -replace ';;',';'

      if (($pathType -eq [System.EnvironmentVariableTarget]::Machine) -and !(Test-ProcessAdminRights)) {
        Write-Warning "Removing path from machine environment variable is not supported when not running as an elevated user!"
      } else {
        Set-EnvironmentVariable -Name 'Path' -Value $newPath -Scope $pathType
      }

      $env:PATH = $newPath
    }
  }
}

threadsafe|http://windows.php.net/downloads/releases/php-7.2.12-Win32-VC15-x86.zip|http://windows.php.net/downloads/releases/php-7.2.12-Win32-VC15-x64.zip|bfa8315b5c24fd4e11044da4e997cb22262f3eb4d143d73b8862196d9b880711|cf4f192bfab0b59b6af64a2ce9f4a0394ebce1a695d0f1a478c4443e601f9f87
not-threadsafe|http://windows.php.net/downloads/releases/php-7.2.12-nts-Win32-VC15-x86.zip|http://windows.php.net/downloads/releases/php-7.2.12-nts-Win32-VC15-x64.zip|f799fbe7aae8939e3eba3c9814777dca7e641554cf6fee9dcf1dd9c3c792e027|d911f377c1dcdd0a62d235db064baac0317851dec3bb1b60b22916045de4728c

$toolsPath = Split-Path $MyInvocation.MyCommand.Definition
. $toolsPath\helpers.ps1

$packageName = 'php'

$installLocation = GetInstallLocation -libDirectory "$toolsPath\.."

if ($installLocation) {
  UninstallPackage -libDirectory "$toolsPath\.." -packageName $packageName

  $di = Get-ChildItem $installLocation -ea 0 | Measure-Object
  if ($di.Count -eq 0) {
    Remove-Item -Force -ea 0 $installLocation
  }

  Uninstall-ChocolateyPath $installLocation

} else {
  Write-Warning "$packageName install path was not found. It may already be uninstalled!"
}

$ErrorActionPreference = 'Stop'

$toolsPath = Split-Path $MyInvocation.MyCommand.Definition
. $toolsPath\helpers.ps1

$installLocation = GetInstallLocation "$toolsPath\.."

if ($installLocation) {
  Write-Host "Uninstalling previous version of php..."
  UninstallPackage -libDirectory "$toolsPath\.." -packageName 'php'
  Uninstall-ChocolateyPath $installLocation
}

$pp = Get-PackageParameters

$downloadInfo = GetDownloadInfo -downloadInfoFile "$toolsPath\downloadInfo.csv" -parameters $pp

if (!(UrlExists($downloadInfo.URL32))) {
    Write-Host "Using archive urls"
    $downloadInfo.URL32 = AddArchivePathToUrl($downloadInfo.URL32)
    $downloadInfo.URL64 = AddArchivePathToUrl($downloadInfo.URL64) # Assuming the 64 bit version is archived simultaneously as the 32 bit one
}

$packageArgs = @{
  packageName    = 'php'
  url            = $downloadInfo.URL32
  url64Bit       = $downloadInfo.URL64
  checksum       = $downloadInfo.Checksum32
  checksum64     = $downloadInfo.Checksum64
  checksumType   = 'sha256'
  checksumType64 = 'sha256'
}
$newInstallLocation = $packageArgs.unzipLocation = GetNewInstallLocation $packageArgs.packageName $env:ChocolateyPackageVersion $pp

Install-ChocolateyZipPackage @packageArgs

if (!$pp.DontAddToPath) { Install-ChocolateyPath $newInstallLocation 'Machine' }

$php_ini_path = $newInstallLocation + '/php.ini'

if (($installLocation -ne $newInstallLocation) -and (Test-Path "$installLocation\php.ini")) {
  Write-Host "Moving old configuration file."
  Move-Item "$installLocation\php.ini" "$php_ini_path"

  $di = Get-ChildItem $installLocation -ea 0 | Measure-Object
  if ($di.Count -eq 0) {
    Write-Host "Removing old install location."
    Remove-Item -Force -ea 0 $installLocation
  }
}

if (!(Test-Path $php_ini_path)) {
  Write-Host 'Creating default php.ini'
  Copy-Item $newInstallLocation/php.ini-production $php_ini_path

  Write-Host 'Configuring PHP extensions directory'
  (Get-Content $php_ini_path) -replace '; extension_dir = "ext"', 'extension_dir = "ext"' | Set-Content $php_ini_path
}

if (!$pp.ThreadSafe) { Write-Host 'Please make sure you have CGI installed in IIS for local hosting' }