feature #34 Add support for custom lookup path using SYMFONY_CLI_PHP_PATH (tucksaun)

This PR was merged into the main branch.

Discussion
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Add support for custom lookup path using `SYMFONY_CLI_PHP_PATH`

There's always a moment when we don't support a specific setup method or someone who will need to be able to use a setup somewhere specific.
So what about letting anyone specify a list of directories where to look for PHP installations?

Commits
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9588070 Add support for custom lookup path using the `SYMFONY_CLI_PHP_PATH` environment varialbe

Author: fabpot

discovery.go

@@ -323,14 +323,15 @@ func normalizeVersion(v string) string {
 
 func (s *PHPStore) pathDirectories(configDir string) []string {
 	phpShimDir := filepath.Join(configDir, "bin")
+	additionalPath := os.Getenv("SYMFONY_CLI_PHP_PATH")
 	path := os.Getenv("PATH")
 	if runtime.GOOS == "windows" {
 		path = os.Getenv("Path")
 	}
 	user := os.Getenv("USERPROFILE")
 	dirs := []string{}
 	seen := make(map[string]bool)
-	for _, dir := range filepath.SplitList(path) {
+	for _, dir := range filepath.SplitList(additionalPath + string(filepath.ListSeparator) + path) {
 		dir = strings.Replace(dir, "%%USERPROFILE%%", user, 1)
 		edir, err := evalSymlinks(dir)
 		if err != nil {