diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractPhpCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractPhpCodegen.java
index bd56bcc9143..ac61fbf8034 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractPhpCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractPhpCodegen.java
@@ -49,8 +49,8 @@ public abstract class AbstractPhpCodegen extends DefaultCodegen implements Codeg
     protected String apiDirName = "Api";
     protected String modelDirName = "Model";
     protected String variableNamingConvention = "snake_case";
-    protected String apiDocPath = docsBasePath + File.separator + apiDirName;
-    protected String modelDocPath = docsBasePath + File.separator + modelDirName;
+    protected String apiDocPath = docsBasePath + "/" + apiDirName;
+    protected String modelDocPath = docsBasePath + "/" + modelDirName;
     protected String interfaceNamePrefix = "", interfaceNameSuffix = "Interface";
     protected String abstractNamePrefix = "Abstract", abstractNameSuffix = "";
     protected String traitNamePrefix = "", traitNameSuffix = "Trait";
@@ -242,27 +242,13 @@ public abstract class AbstractPhpCodegen extends DefaultCodegen implements Codeg
             basePath = basePath.replaceAll("[\\\\/]?$", "") + '/'; // FIXME: a parameter should not be assigned. Also declare the methods parameters as 'final'.
         }
 
-        String regFirstPathSeparator;
-        if ("/".equals(File.separator)) { // for mac, linux
-            regFirstPathSeparator = "^/";
-        } else { // for windows
-            regFirstPathSeparator = "^\\\\";
-        }
-
-        String regLastPathSeparator;
-        if ("/".equals(File.separator)) { // for mac, linux
-            regLastPathSeparator = "/$";
-        } else { // for windows
-            regLastPathSeparator = "\\\\$";
-        }
-
         return (basePath
                 // Replace period, backslash, forward slash with file separator in package name
                 + packageName.replaceAll("[\\.\\\\/]", Matcher.quoteReplacement("/"))
                 // Trim prefix file separators from package path
-                .replaceAll(regFirstPathSeparator, ""))
+                .replaceAll("^/", ""))
                 // Trim trailing file separators from the overall path
-                .replaceAll(regLastPathSeparator + "$", "");
+                .replaceAll("/$", "");
     }
 
     @Override
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PhpSymfonyServerCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PhpSymfonyServerCodegen.java
index 1e17640e066..8ec91b65124 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PhpSymfonyServerCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PhpSymfonyServerCodegen.java
@@ -88,9 +88,9 @@ public class PhpSymfonyServerCodegen extends AbstractPhpCodegen implements Codeg
         setInvokerPackage("OpenAPI\\Server");
         setBundleName("OpenAPIServer");
         modelDirName = "Model";
-        docsBasePath = "Resources" + File.separator + "docs";
-        apiDocPath = docsBasePath + File.separator + apiDirName;
-        modelDocPath = docsBasePath + File.separator + modelDirName;
+        docsBasePath = "Resources" + "/" + "docs";
+        apiDocPath = docsBasePath + "/" + apiDirName;
+        modelDocPath = docsBasePath + "/" + modelDirName;
         outputFolder = "generated-code" + File.separator + "php";
         apiTemplateFiles.put("api_controller.mustache", ".php");
         modelTestTemplateFiles.put("testing/model_test.mustache", ".php");
@@ -275,13 +275,13 @@ public class PhpSymfonyServerCodegen extends AbstractPhpCodegen implements Codeg
         additionalProperties.put("bundleAlias", bundleAlias);
 
         // make api and model src path available in mustache template
-        additionalProperties.put("apiSrcPath", "." + File.separator + toSrcPath(apiPackage, srcBasePath));
-        additionalProperties.put("modelSrcPath", "." + File.separator + toSrcPath(modelPackage, srcBasePath));
-        additionalProperties.put("testsSrcPath", "." + File.separator + toSrcPath(testsPackage, srcBasePath));
-        additionalProperties.put("apiTestsSrcPath", "." + File.separator + toSrcPath(apiTestsPackage, srcBasePath));
-        additionalProperties.put("modelTestsSrcPath", "." + File.separator + toSrcPath(modelTestsPackage, srcBasePath));
-        additionalProperties.put("apiTestPath", "." + File.separator + testsDirName + File.separator + apiDirName);
-        additionalProperties.put("modelTestPath", "." + File.separator + testsDirName + File.separator + modelDirName);
+        additionalProperties.put("apiSrcPath", "." + "/" + toSrcPath(apiPackage, srcBasePath));
+        additionalProperties.put("modelSrcPath", "." + "/" + toSrcPath(modelPackage, srcBasePath));
+        additionalProperties.put("testsSrcPath", "." + "/" + toSrcPath(testsPackage, srcBasePath));
+        additionalProperties.put("apiTestsSrcPath", "." + "/" + toSrcPath(apiTestsPackage, srcBasePath));
+        additionalProperties.put("modelTestsSrcPath", "." + "/" + toSrcPath(modelTestsPackage, srcBasePath));
+        additionalProperties.put("apiTestPath", "." + "/" + testsDirName + "/" + apiDirName);
+        additionalProperties.put("modelTestPath", "." + "/" + testsDirName + "/" + modelDirName);
 
         // make api and model doc path available in mustache template
         additionalProperties.put("apiDocPath", apiDocPath);