Fish shell support

Author: svandragt

README.md

@@ -24,9 +24,13 @@ $ curl -# -L https://github.com/svandragt/php-activate/tarball/main | tar -xz --
 Add the following line to your shell rc script:
 
 ```
-source $HOME/opt/php-activate/php-activate.sh # or your place of choice
+# Fish
+source $HOME/opt/php-activate/php-activate.fish
+# Bash or ZSH:
+source $HOME/opt/php-activate/php-activate.sh
 ```
 
+
 ## Run examples
 
 ```shell

php-activate.fish

@@ -0,0 +1,27 @@
+#!/usr/bin/env fish
+
+function php-activate
+    if not test -z $argv[1]
+        set php_versions (update-alternatives --query php | grep Alternative | cut -d ' ' -f2)
+        if string match "*$argv[1]" $php_versions
+            set -xg PHP_PICKED (string match "*$argv[1]" $php_versions | head -n 1)
+            function php
+                $PHP_PICKED $argv
+            end
+            echo "Activated: $PHP_PICKED"
+            php --version | grep built
+        else
+            echo "Error: No matching PHP version found. Use one of the following:"
+            echo "$php_versions"
+        end
+        return
+    end
+
+    if not test -z $PHP_PICKED
+        echo "Deactivated: $PHP_PICKED"
+        set -e PHP_PICKED
+        functions -e php
+        php --version | grep built
+        return
+    end
+end