From fddfc3fe6a874f5e011e818fb1c982e28f3d209f Mon Sep 17 00:00:00 2001
From: Siad Ardroumli <siad.ardroumli@gmail.com>
Date: Sat, 13 Feb 2021 22:21:04 +0100
Subject: [PATCH 1/3] [PropertyHelper] Fixed deprecation warning

PHP 8.1
---
 src/Phing/PropertyHelper.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Phing/PropertyHelper.php b/src/Phing/PropertyHelper.php
index bc75470b04..44ead186dd 100644
--- a/src/Phing/PropertyHelper.php
+++ b/src/Phing/PropertyHelper.php
@@ -427,7 +427,7 @@ public function getProperty($ns, $name)
             return $o;
         }
 
-        $found = $this->properties[$name] ?? null;
+        $found = $this->properties[$name] ?? '';
         // check to see if there are unresolved property references
         if (false !== strpos($found, '${')) {
             // attempt to resolve properties

From 75bb75946f0559a3779abe59385159594224a8ba Mon Sep 17 00:00:00 2001
From: Siad Ardroumli <siad.ardroumli@gmail.com>
Date: Sat, 13 Feb 2021 22:29:10 +0100
Subject: [PATCH 2/3] Update PropertyHelper.php

---
 src/Phing/PropertyHelper.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/Phing/PropertyHelper.php b/src/Phing/PropertyHelper.php
index 44ead186dd..ae45241d44 100644
--- a/src/Phing/PropertyHelper.php
+++ b/src/Phing/PropertyHelper.php
@@ -427,9 +427,9 @@ public function getProperty($ns, $name)
             return $o;
         }
 
-        $found = $this->properties[$name] ?? '';
+        $found = $this->properties[$name] ?? null;
         // check to see if there are unresolved property references
-        if (false !== strpos($found, '${')) {
+        if ($found !== null && false !== strpos($found, '${')) {
             // attempt to resolve properties
             $found = $this->replaceProperties($found, null);
             if (StringHelper::startsWith('${', $found) && StringHelper::endsWith('}', $found)) {

From de6eedb1bcda39ef7fc736d3c8625d1a3e83823c Mon Sep 17 00:00:00 2001
From: Siad Ardroumli <siad.ardroumli@gmail.com>
Date: Sat, 13 Feb 2021 22:48:30 +0100
Subject: [PATCH 3/3] Fixed warning

`preg_split(): Passing null to parameter #2 ($subject) of type string is deprecated`
---
 src/Phing/Util/PregEngine.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Phing/Util/PregEngine.php b/src/Phing/Util/PregEngine.php
index e8e4664f19..4116034880 100644
--- a/src/Phing/Util/PregEngine.php
+++ b/src/Phing/Util/PregEngine.php
@@ -47,7 +47,7 @@ class PregEngine implements RegexpEngine
      * @link http://php.net/manual/en/reference.pcre.pattern.modifiers.php
      * @var  string
      */
-    private $modifiers = null;
+    private $modifiers = '';
 
     /**
      * Set the limit.