diff --git a/.claude/settings.json b/.claude/settings.json
index 43955c7e104..a1a19b11870 100644
--- a/.claude/settings.json
+++ b/.claude/settings.json
@@ -58,6 +58,6 @@
     "NODE_ENV": "development",
     "PNPM_VERSION": "9.4.0"
   },
-  "includeCoAuthoredBy": false,
+  "includeCoAuthoredBy": true,
   "model": "claude-sonnet-4-20250514"
 }
diff --git a/generators/php/base/src/context/AbstractPhpGeneratorContext.ts b/generators/php/base/src/context/AbstractPhpGeneratorContext.ts
index d448d1bc675..250ca767c19 100644
--- a/generators/php/base/src/context/AbstractPhpGeneratorContext.ts
+++ b/generators/php/base/src/context/AbstractPhpGeneratorContext.ts
@@ -1,7 +1,7 @@
 import { AbstractGeneratorContext, FernGeneratorExec, GeneratorNotificationService } from "@fern-api/base-generator";
 import { assertNever } from "@fern-api/core-utils";
 import { RelativeFilePath } from "@fern-api/fs-utils";
-import { BasePhpCustomConfigSchema, GLOBAL_NAMESPACE, php, SELF } from "@fern-api/php-codegen";
+import { BasePhpCustomConfigSchema, GLOBAL_NAMESPACE, getSafeClassName, php, SELF } from "@fern-api/php-codegen";
 import {
     FernFilepath,
     IntermediateRepresentation,
@@ -82,7 +82,7 @@ export abstract class AbstractPhpGeneratorContext<
     }
 
     public getClassName(name: Name): string {
-        return name.pascalCase.safeName;
+        return getSafeClassName(name.pascalCase.safeName);
     }
 
     public getGlobalNamespace(): string {
diff --git a/generators/php/codegen/src/ast/Enum.ts b/generators/php/codegen/src/ast/Enum.ts
index d981c2f5b4c..e52cbc67e32 100644
--- a/generators/php/codegen/src/ast/Enum.ts
+++ b/generators/php/codegen/src/ast/Enum.ts
@@ -71,7 +71,9 @@ export class Enum extends AstNode {
             writer.write(`case ${member.name}`);
             if (member.value != null) {
                 if (typeof member.value === "string") {
-                    writer.write(` = "${member.value}"`);
+                    // Escape backslashes and double quotes in the string value
+                    const escapedValue = member.value.replace(/\\/g, "\\\\").replace(/"/g, '\\"');
+                    writer.write(` = "${escapedValue}"`);
                 } else {
                     writer.write(` = ${member.value}`);
                 }
diff --git a/generators/php/codegen/src/constants.ts b/generators/php/codegen/src/constants.ts
new file mode 100644
index 00000000000..7c161970027
--- /dev/null
+++ b/generators/php/codegen/src/constants.ts
@@ -0,0 +1,75 @@
+// PHP reserved keywords (case-insensitive) that cannot be used as class names
+// Source: https://www.php.net/manual/en/reserved.keywords.php
+export const PHP_RESERVED_KEYWORDS = new Set([
+    "abstract",
+    "and",
+    "array",
+    "as",
+    "break",
+    "callable",
+    "case",
+    "catch",
+    "class",
+    "clone",
+    "const",
+    "continue",
+    "declare",
+    "default",
+    "die",
+    "do",
+    "echo",
+    "else",
+    "elseif",
+    "empty",
+    "enddeclare",
+    "endfor",
+    "endforeach",
+    "endif",
+    "endswitch",
+    "endwhile",
+    "eval",
+    "exit",
+    "extends",
+    "final",
+    "finally",
+    "fn",
+    "for",
+    "foreach",
+    "function",
+    "global",
+    "goto",
+    "if",
+    "implements",
+    "include",
+    "include_once",
+    "instanceof",
+    "insteadof",
+    "interface",
+    "isset",
+    "list",
+    "match",
+    "namespace",
+    "new",
+    "or",
+    "print",
+    "private",
+    "protected",
+    "public",
+    "readonly",
+    "require",
+    "require_once",
+    "return",
+    "static",
+    "switch",
+    "throw",
+    "trait",
+    "try",
+    "unset",
+    "use",
+    "var",
+    "while",
+    "xor",
+    "yield",
+    "yield_from",
+    "__halt_compiler"
+]);
diff --git a/generators/php/codegen/src/index.ts b/generators/php/codegen/src/index.ts
index 26f7b1f393a..090253a24f6 100644
--- a/generators/php/codegen/src/index.ts
+++ b/generators/php/codegen/src/index.ts
@@ -1,3 +1,5 @@
 export { GLOBAL_NAMESPACE, SELF, STATIC } from "./ast/core/Constant";
+export { PHP_RESERVED_KEYWORDS } from "./constants";
 export { BasePhpCustomConfigSchema } from "./custom-config/BasePhpCustomConfigSchema";
 export * as php from "./php";
+export { getSafeClassName } from "./utils";
diff --git a/generators/php/codegen/src/utils.ts b/generators/php/codegen/src/utils.ts
new file mode 100644
index 00000000000..9167b3fa84f
--- /dev/null
+++ b/generators/php/codegen/src/utils.ts
@@ -0,0 +1,15 @@
+import { PHP_RESERVED_KEYWORDS } from "./constants";
+
+/**
+ * Returns a safe class name, adding a trailing underscore if the name
+ * conflicts with a PHP reserved keyword.
+ */
+export function getSafeClassName(className: string): string {
+    // Check if the class name is a reserved keyword (case-insensitive)
+    if (PHP_RESERVED_KEYWORDS.has(className.toLowerCase())) {
+        // Add trailing underscore to avoid collision
+        return `${className}_`;
+    }
+
+    return className;
+}
diff --git a/generators/php/dynamic-snippets/src/context/DynamicSnippetsGeneratorContext.ts b/generators/php/dynamic-snippets/src/context/DynamicSnippetsGeneratorContext.ts
index 8a0aee306b0..927daac1b11 100644
--- a/generators/php/dynamic-snippets/src/context/DynamicSnippetsGeneratorContext.ts
+++ b/generators/php/dynamic-snippets/src/context/DynamicSnippetsGeneratorContext.ts
@@ -3,7 +3,7 @@ import {
     FernGeneratorExec
 } from "@fern-api/browser-compatible-base-generator";
 import { FernIr } from "@fern-api/dynamic-ir-sdk";
-import { BasePhpCustomConfigSchema, php } from "@fern-api/php-codegen";
+import { BasePhpCustomConfigSchema, getSafeClassName, php } from "@fern-api/php-codegen";
 import { camelCase, upperFirst } from "lodash-es";
 
 import { DynamicTypeLiteralMapper } from "./DynamicTypeLiteralMapper";
@@ -63,7 +63,7 @@ export class DynamicSnippetsGeneratorContext extends AbstractDynamicSnippetsGene
     }
 
     public getClassName(name: FernIr.Name): string {
-        return name.pascalCase.safeName;
+        return getSafeClassName(name.pascalCase.safeName);
     }
 
     public getRootClientClassName(): string {
diff --git a/generators/php/sdk/versions.yml b/generators/php/sdk/versions.yml
index d9d99c256e9..400162aa53a 100644
--- a/generators/php/sdk/versions.yml
+++ b/generators/php/sdk/versions.yml
@@ -1,4 +1,14 @@
 # yaml-language-server: $schema=../../../fern-versions-yml.schema.json
+- version: 1.17.2
+  changelogEntry:
+    - summary: |
+        Fix enum string escaping and PHP reserved keyword handling.
+        - Enum values containing quotes are now properly escaped to prevent syntax errors.
+        - Class names that conflict with PHP reserved keywords (e.g., "eval", "list") automatically receive a trailing underscore (e.g., "Eval_").
+      type: fix
+  createdAt: "2025-10-17"
+  irVersion: 59
+
 - version: 1.17.1
   changelogEntry:
     - summary: |