Philippines Zone IV - EPSG:25394

WKT

PROJCS["Philippines_Zone_IV", 
	GEOGCS["GCS_Luzon_1911", 
		DATUM["D_Luzon_1911", 
			SPHEROID["Clarke_1866", 6378206.4, 294.9786982]], 
		PRIMEM["Greenwich", 0.0], 
		UNIT["Degree", 0.0174532925199433]], 
	PROJECTION["Transverse_Mercator"], 
	PARAMETER["False_Easting", 500000.0], 
	PARAMETER["False_Northing", 0.0], 
	PARAMETER["Central_Meridian", 123.0], 
	PARAMETER["Scale_Factor", 0.99995], 
	PARAMETER["Latitude_Of_Origin", 0.0], 
	UNIT["Meter", 1.0]]

WKT2

PROJCRS["Philippines_Zone_IV", 
	BASEGEOGCRS["GCS_Luzon_1911", 
		DATUM["D_Luzon_1911", 
			ELLIPSOID["Clarke_1866", 6378206.4, 294.9786982]], 
		PRIMEM["Greenwich", 0.0], 
		CS[ellipsoidal, 2], 
		AXIS["Latitude (lat)", north, 
			ORDER[1]], 
		AXIS["Longitude (lon)", east, 
			ORDER[2]], 
		ANGLEUNIT["Degree", 0.0174532925199433]], 
	CONVERSION["Transverse_Mercator", 
		METHOD["Transverse_Mercator"], 
		PARAMETER["False_Easting", 500000.0], 
		PARAMETER["False_Northing", 0.0], 
		PARAMETER["Central_Meridian", 123.0], 
		PARAMETER["Scale_Factor", 0.99995], 
		PARAMETER["Latitude_Of_Origin", 0.0]], 
	CS[Cartesian, 2], 
	AXIS["Easting (X)", east, 
		ORDER[1]], 
	AXIS["Northing (Y)", north, 
		ORDER[2]], 
	LENGTHUNIT["Meter", 1.0], 
	ID["EPSG", "25394"]]

Data from @esri/proj-codes

{
  "wkid": 25394,
  "latestWkid": 25394,
  "gcsWkid": 4253,
  "macro": "PE_PCS_LUZON_PHILIPPINES_IV",
  "name": "Philippines_Zone_IV",
  "wkt": "PROJCS[\"Philippines_Zone_IV\",GEOGCS[\"GCS_Luzon_1911\",DATUM[\"D_Luzon_1911\",SPHEROID[\"Clarke_1866\",6378206.4,294.9786982]],PRIMEM[\"Greenwich\",0.0],UNIT[\"Degree\",0.0174532925199433]],PROJECTION[\"Transverse_Mercator\"],PARAMETER[\"False_Easting\",500000.0],PARAMETER[\"False_Northing\",0.0],PARAMETER[\"Central_Meridian\",123.0],PARAMETER[\"Scale_Factor\",0.99995],PARAMETER[\"Latitude_Of_Origin\",0.0],UNIT[\"Meter\",1.0]]",
  "wkt2": "PROJCRS[\"Philippines_Zone_IV\",BASEGEOGCRS[\"GCS_Luzon_1911\",DATUM[\"D_Luzon_1911\",ELLIPSOID[\"Clarke_1866\",6378206.4,294.9786982]],PRIMEM[\"Greenwich\",0.0],CS[ellipsoidal,2],AXIS[\"Latitude (lat)\",north,ORDER[1]],AXIS[\"Longitude (lon)\",east,ORDER[2]],ANGLEUNIT[\"Degree\",0.0174532925199433]],CONVERSION[\"Transverse_Mercator\",METHOD[\"Transverse_Mercator\"],PARAMETER[\"False_Easting\",500000.0],PARAMETER[\"False_Northing\",0.0],PARAMETER[\"Central_Meridian\",123.0],PARAMETER[\"Scale_Factor\",0.99995],PARAMETER[\"Latitude_Of_Origin\",0.0]],CS[Cartesian,2],AXIS[\"Easting (X)\",east,ORDER[1]],AXIS[\"Northing (Y)\",north,ORDER[2]],LENGTHUNIT[\"Meter\",1.0],ID[\"EPSG\",\"25394\"]]",
  "description": "Philippines Zone IV",
  "authority": "EPSG",
  "version": "6.7(3.0.1)",
  "deprecated": "no",
  "areaname": "Philippines - zone IV onshore",
  "extent": {
    "slat": 6.35,
    "nlat": 18.58,
    "llon": 121.74,
    "rlon": 124.29
  }
}