Table of contents
Abstract class that can be implemented to modifiy the serialization output on a given property or field.
To facilitate completely omitting fields, null returned from the Serialize method has special consideration in the
serializer.
Implementation:
[AttributeUsage(AttributeTargets.Property | AttributeTargets.Field)]
public class PhpIgnoreNull : PhpSerializationFilter {
public override string? Serialize(object key, object value, PhpSerializiationOptions options) {
if (value != null) {
return PhpSerialization.Serialize(key, options) + PhpSerialization.Serialize(value, options);
}
return null;
}
}
Usage:
public struct PersonA {
[PhpIgnoreNull]
public string? Title { get; set; }
public required string FirstName { get; set; }
public required string LastName { get; set; }
}
var serialized = PhpSerialization.Serialize(new PersonA { FirstName = "John", LastName = "Johnson" });
// serialized = "a:2:{s:9:"FirstName";s:4:"John";s:8:"LastName";s:7:"Johnson"}"
// in contrast without the custom filter:
public struct PersonB {
public string? Title { get; set; }
public required string FirstName { get; set; }
public required string LastName { get; set; }
}
var serialized = PhpSerialization.Serialize(new PersonB { FirstName = "John", LastName = "Johnson" });
// serialized = "a:3:{s:5:"Title";N;s:9:"FirstName";s:4:"John";s:8:"LastName";s:7:"Johnson"}"