Fix casing and ignore errors with hashmap keys.

CHANGELOG.md

@@ -15,7 +15,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Remove `--json-no-indent` option in favor of `RAW_JSON` output format which does the same job. (CLI)
 
 ### Changed
-
+- Fix class name casings when reference in the errorMappings in PHP.
 - Fixed imports for enum type properties with default values in Python. [#3367](https://github.com/microsoft/kiota/issues/3367)
 - Updated constructor for request builders in Python to set passed path parameters. [#3352](https://github.com/microsoft/kiota/issues/3352)
 - Fixed inherited type definition generation where some cases would not generate properly. [#2745](https://github.com/microsoft/kiota/issues/2745)

it/php/phpstan.neon

@@ -7,4 +7,4 @@ parameters:
     - src
   ignoreErrors:
     - '#Parameter [\w\W]+ \$errorMappings of method [\w\\]+RequestAdapter::send[\w]+\(\) expects [\w\W\s]+ given\.#'
-    - '#getFieldDeserializers\(\) should return array\<string, callable\(Microsoft\\Kiota\\Abstractions\\Serialization\\ParseNode\)\: void\> but returns array\{[\d]\: Closure\(Microsoft\\Kiota\\Abstractions\\Serialization\\ParseNode\)\: void.+#'
+    - '#getFieldDeserializers\(\) should return array\<string, callable\(Microsoft\\Kiota\\Abstractions\\Serialization\\ParseNode\)\: void\> but returns array\{[\d]+\: Closure\(Microsoft\\Kiota\\Abstractions\\Serialization\\ParseNode\)\: void.+#'

src/Kiota.Builder/Writers/Php/CodeMethodWriter.cs

@@ -719,7 +719,7 @@ private void WriteRequestExecutorBody(CodeMethod codeElement, CodeClass parentCl
             writer.IncreaseIndent(2);
             errorMappings.ToList().ForEach(errorMapping =>
             {
-                writer.WriteLine($"'{errorMapping.Key}' => [{errorMapping.Value.Name}::class, '{CreateDiscriminatorMethodName}'],");
+                writer.WriteLine($"'{errorMapping.Key}' => [{errorMapping.Value.Name.ToFirstCharacterUpperCase()}::class, '{CreateDiscriminatorMethodName}'],");
             });
             writer.DecreaseIndent();
             writer.WriteLine("];");