# GetHeadersBuildPhaseByTarget(string)

> Returns the GUID of the headers build phase for the given target.

## Definition

* **Type:** Method
* **Namespace:** [UnityEditor.iOS.Xcode](/engine/6000.5/script-reference/unityeditor/ios/xcode.md)
* **Assembly:** UnityEditor.iOS.Extensions.Xcode

```csharp
public string GetHeadersBuildPhaseByTarget(string targetGuid)
```

### Parameters

**** (\[string]\(https\://learn.microsoft.com/dotnet/api/system.string)): The GUID of the target, such as one returned by [PBXProject.TargetGuidByName](/engine/6000.5/script-reference/unityeditor/ios/xcode/pbxproject/targetguidbyname.md).

### Returns

| Type                                                           | Description                                                            |
| -------------------------------------------------------------- | ---------------------------------------------------------------------- |
| [string](https://learn.microsoft.com/dotnet/api/system.string) | Returns the GUID of the existing phase or `null` if it does not exist. |

### Examples

```csharp
using UnityEngine;
using UnityEditor;
using System.IO;
using UnityEditor.Callbacks;
using UnityEditor.iOS.Xcode;

public class Sample_GetHeadersBuildPhaseByTarget  
{
    [PostProcessBuild]
    public static void OnPostprocessBuild(BuildTarget buildTarget, string pathToBuiltProject)
    {

        // Stop processing if build target is not iOS
        if (buildTarget != BuildTarget.iOS)
            return;

        // Initialize PBXProject
        string projectPath = PBXProject.GetPBXProjectPath(pathToBuiltProject);
        PBXProject pbxProject = new PBXProject();
        pbxProject.ReadFromFile(projectPath);

        // Get the target GUID
        string targetGuid = pbxProject.GetUnityMainTargetGuid();

        // Get the "Headers Build" build phase GUID 
        string headersBuildPhase = pbxProject.GetHeadersBuildPhaseByTarget(targetGuid);

        // Log the "Headers Build" phase GUID for debugging
        Debug.Log("'Headers Build' phase GUID: " + headersBuildPhase);
    }
}
```