diff --git a/packages/playground/blueprints/src/lib/steps/install-theme.spec.ts b/packages/playground/blueprints/src/lib/steps/install-theme.spec.ts
index 6e8c598742..6b1660193f 100644
--- a/packages/playground/blueprints/src/lib/steps/install-theme.spec.ts
+++ b/packages/playground/blueprints/src/lib/steps/install-theme.spec.ts
@@ -92,7 +92,7 @@ describe('Blueprint step installTheme', () => {
 		it('ifAlreadyInstalled=skip should skip the theme if the theme already exists', async () => {
 			await installTheme(php, {
 				themeZipFile: new File(
-					['invalid zip bytes, unpacking should not attempted'],
+					[php.readFileAsBuffer(zipFilePath)],
 					zipFileName
 				),
 				ifAlreadyInstalled: 'skip',
diff --git a/packages/playground/blueprints/src/lib/steps/zip-wp-content.ts b/packages/playground/blueprints/src/lib/steps/zip-wp-content.ts
index 9870ff76d7..81080cac48 100644
--- a/packages/playground/blueprints/src/lib/steps/zip-wp-content.ts
+++ b/packages/playground/blueprints/src/lib/steps/zip-wp-content.ts
@@ -1,7 +1,6 @@
 import { joinPaths, phpVars } from '@php-wasm/util';
 import { UniversalPHP } from '@php-wasm/universal';
 import { wpContentFilesExcludedFromExport } from '../utils/wp-content-files-excluded-from-exports';
-import { runPhpWithZipFunctions } from '../utils/run-php-with-zip-functions';
 
 interface ZipWpContentOptions {
 	/**
@@ -73,3 +72,70 @@ export const zipWpContent = async (
 
 	return fileBuffer;
 };
+
+const zipFunctions = `<?php
+
+function zipDir($root, $output, $options = array())
+{
+    $root = rtrim($root, '/');
+    $additionalPaths = array_key_exists('additional_paths', $options) ? $options['additional_paths'] : array();
+    $excludePaths = array_key_exists('exclude_paths', $options) ? $options['exclude_paths'] : array();
+    $zip_root = array_key_exists('zip_root', $options) ? $options['zip_root'] : $root;
+
+    $zip = new ZipArchive;
+    $res = $zip->open($output, ZipArchive::CREATE);
+    if ($res === TRUE) {
+        $directories = array(
+            $root . '/'
+        );
+        while (sizeof($directories)) {
+            $current_dir = array_pop($directories);
+
+            if ($handle = opendir($current_dir)) {
+                while (false !== ($entry = readdir($handle))) {
+                    if ($entry == '.' || $entry == '..') {
+                        continue;
+                    }
+
+                    $entry = join_paths($current_dir, $entry);
+                    if (in_array($entry, $excludePaths)) {
+                        continue;
+                    }
+
+                    if (is_dir($entry)) {
+                        $directory_path = $entry . '/';
+                        array_push($directories, $directory_path);
+                    } else if (is_file($entry)) {
+                        $zip->addFile($entry, substr($entry, strlen($zip_root)));
+                    }
+                }
+                closedir($handle);
+            }
+        }
+        foreach ($additionalPaths as $disk_path => $zip_path) {
+            $zip->addFile($disk_path, $zip_path);
+        }
+        $zip->close();
+        chmod($output, 0777);
+    }
+}
+
+function join_paths()
+{
+    $paths = array();
+
+    foreach (func_get_args() as $arg) {
+        if ($arg !== '') {
+            $paths[] = $arg;
+        }
+    }
+
+    return preg_replace('#/+#', '/', join('/', $paths));
+}
+`;
+
+async function runPhpWithZipFunctions(playground: UniversalPHP, code: string) {
+	return await playground.run({
+		code: zipFunctions + code,
+	});
+}
diff --git a/packages/playground/blueprints/src/lib/utils/run-php-with-zip-functions.ts b/packages/playground/blueprints/src/lib/utils/run-php-with-zip-functions.ts
deleted file mode 100644
index f70f23ac2b..0000000000
--- a/packages/playground/blueprints/src/lib/utils/run-php-with-zip-functions.ts
+++ /dev/null
@@ -1,95 +0,0 @@
-import { UniversalPHP } from '@php-wasm/universal';
-
-const zipFunctions = `<?php
-
-function zipDir($root, $output, $options = array())
-{
-    $root = rtrim($root, '/');
-    $additionalPaths = array_key_exists('additional_paths', $options) ? $options['additional_paths'] : array();
-    $excludePaths = array_key_exists('exclude_paths', $options) ? $options['exclude_paths'] : array();
-    $zip_root = array_key_exists('zip_root', $options) ? $options['zip_root'] : $root;
-
-    $zip = new ZipArchive;
-    $res = $zip->open($output, ZipArchive::CREATE);
-    if ($res === TRUE) {
-        $directories = array(
-            $root . '/'
-        );
-        while (sizeof($directories)) {
-            $current_dir = array_pop($directories);
-
-            if ($handle = opendir($current_dir)) {
-                while (false !== ($entry = readdir($handle))) {
-                    if ($entry == '.' || $entry == '..') {
-                        continue;
-                    }
-
-                    $entry = join_paths($current_dir, $entry);
-                    if (in_array($entry, $excludePaths)) {
-                        continue;
-                    }
-
-                    if (is_dir($entry)) {
-                        $directory_path = $entry . '/';
-                        array_push($directories, $directory_path);
-                    } else if (is_file($entry)) {
-                        $zip->addFile($entry, substr($entry, strlen($zip_root)));
-                    }
-                }
-                closedir($handle);
-            }
-        }
-        foreach ($additionalPaths as $disk_path => $zip_path) {
-            $zip->addFile($disk_path, $zip_path);
-        }
-        $zip->close();
-        chmod($output, 0777);
-    }
-}
-
-function join_paths()
-{
-    $paths = array();
-
-    foreach (func_get_args() as $arg) {
-        if ($arg !== '') {
-            $paths[] = $arg;
-        }
-    }
-
-    return preg_replace('#/+#', '/', join('/', $paths));
-}
-
-function unzip($zipPath, $extractTo, $overwrite = true)
-{
-    if (!is_dir($extractTo)) {
-        mkdir($extractTo, 0777, true);
-    }
-    $zip = new ZipArchive;
-    $res = $zip->open($zipPath);
-    if ($res === TRUE) {
-        $zip->extractTo($extractTo);
-        $zip->close();
-        chmod($extractTo, 0777);
-    }
-}
-
-
-function delTree($dir)
-{
-    $files = array_diff(scandir($dir), array('.', '..'));
-    foreach ($files as $file) {
-        (is_dir("$dir/$file")) ? delTree("$dir/$file") : unlink("$dir/$file");
-    }
-    return rmdir($dir);
-}
-`;
-
-export async function runPhpWithZipFunctions(
-	playground: UniversalPHP,
-	code: string
-) {
-	return await playground.run({
-		code: zipFunctions + code,
-	});
-}
diff --git a/packages/playground/common/src/index.ts b/packages/playground/common/src/index.ts
index 5b0f65f5f0..5aae83fc81 100644
--- a/packages/playground/common/src/index.ts
+++ b/packages/playground/common/src/index.ts
@@ -14,9 +14,6 @@ import { phpVars } from '@php-wasm/util';
 
 export const RecommendedPHPVersion = '8.0';
 
-// @TODO Make these ZIP functions more versatile and
-//       move them to one of the @php-wasm packages.
-
 /**
  * Unzip a zip file inside Playground.
  */
@@ -38,105 +35,27 @@ export const unzipFile = async (
 		zipPath,
 		extractToPath,
 	});
-	await runPhpWithZipFunctions(
-		php,
-		`unzip(${js.zipPath}, ${js.extractToPath});`
-	);
+	await php.run({
+		code: `<?php
+        function unzip($zipPath, $extractTo, $overwrite = true)
+        {
+            if (!is_dir($extractTo)) {
+                mkdir($extractTo, 0777, true);
+            }
+            $zip = new ZipArchive;
+            $res = $zip->open($zipPath);
+            if ($res === TRUE) {
+                $zip->extractTo($extractTo);
+                $zip->close();
+                chmod($extractTo, 0777);
+            } else {
+                throw new Exception("Could not unzip file");
+            }
+        }
+        unzip(${js.zipPath}, ${js.extractToPath});
+        `,
+	});
 	if (await php.fileExists(tmpPath)) {
 		await php.unlink(tmpPath);
 	}
 };
-
-const zipFunctions = `<?php
-
-function zipDir($root, $output, $options = array())
-{
-    $root = rtrim($root, '/');
-    $additionalPaths = array_key_exists('additional_paths', $options) ? $options['additional_paths'] : array();
-    $excludePaths = array_key_exists('exclude_paths', $options) ? $options['exclude_paths'] : array();
-    $zip_root = array_key_exists('zip_root', $options) ? $options['zip_root'] : $root;
-
-    $zip = new ZipArchive;
-    $res = $zip->open($output, ZipArchive::CREATE);
-    if ($res === TRUE) {
-        $directories = array(
-            $root . '/'
-        );
-        while (sizeof($directories)) {
-            $current_dir = array_pop($directories);
-
-            if ($handle = opendir($current_dir)) {
-                while (false !== ($entry = readdir($handle))) {
-                    if ($entry == '.' || $entry == '..') {
-                        continue;
-                    }
-
-                    $entry = join_paths($current_dir, $entry);
-                    if (in_array($entry, $excludePaths)) {
-                        continue;
-                    }
-
-                    if (is_dir($entry)) {
-                        $directory_path = $entry . '/';
-                        array_push($directories, $directory_path);
-                    } else if (is_file($entry)) {
-                        $zip->addFile($entry, substr($entry, strlen($zip_root)));
-                    }
-                }
-                closedir($handle);
-            }
-        }
-        foreach ($additionalPaths as $disk_path => $zip_path) {
-            $zip->addFile($disk_path, $zip_path);
-        }
-        $zip->close();
-        chmod($output, 0777);
-    }
-}
-
-function join_paths()
-{
-    $paths = array();
-
-    foreach (func_get_args() as $arg) {
-        if ($arg !== '') {
-            $paths[] = $arg;
-        }
-    }
-
-    return preg_replace('#/+#', '/', join('/', $paths));
-}
-
-function unzip($zipPath, $extractTo, $overwrite = true)
-{
-    if (!is_dir($extractTo)) {
-        mkdir($extractTo, 0777, true);
-    }
-    $zip = new ZipArchive;
-    $res = $zip->open($zipPath);
-    if ($res === TRUE) {
-        $zip->extractTo($extractTo);
-        $zip->close();
-        chmod($extractTo, 0777);
-    }
-}
-
-
-function delTree($dir)
-{
-    $files = array_diff(scandir($dir), array('.', '..'));
-    foreach ($files as $file) {
-        (is_dir("$dir/$file")) ? delTree("$dir/$file") : unlink("$dir/$file");
-    }
-    return rmdir($dir);
-}
-`;
-
-export async function runPhpWithZipFunctions(
-	playground: UniversalPHP,
-	code: string
-) {
-	return await playground.run({
-		code: zipFunctions + code,
-	});
-}