Is there a way to matching the code of ESRI WKID with EPSG code? I'm trying to find the coordinate system of PCS Name = CGRS_1993_LTM. Which has WKID:102319 code. But I donn't know the EPSG code.
Up to now, the EPSG database has no CRS for Cyprus. There is an open ticket for it since November 2014
The code you mention is from ESRI, and according to http://help.arcgis.com/en/arcims/10.0/mainhelp/mergedProjects/ArcXMLGuide/elements/pcs.htm#102319 the values are:
PROJCS["CGRS_1993_LTM", GEOGCS["GCS_CGRS_1993", DATUM["D_Cyprus_Geodetic_Reference_System_1993", SPHEROID["WGS_1984",6378137.0,298.257223563]], PRIMEM["Greenwich",0.0], UNIT["Degree",0.0174532925199433]], PROJECTION["Transverse_Mercator"], PARAMETER["False_Easting",200000.0], PARAMETER["False_Northing",-3500000.0], PARAMETER["Central_Meridian",33.0], PARAMETER["Scale_Factor",0.99995], PARAMETER["Latitude_Of_Origin",0.0], UNIT["Meter",1.0]]
These have to get an official acknowledgment to be put into the EPSG database. Until then, you have to use a custom CRS if you are working outside of the ESRI world.
The equivalent Proj.4 string is
+proj=tmerc +lat_0=0 +lon_0=33 +k=0.99995 +x_0=200000 +y_0=-3500000 +ellps=WGS84 +units=m +no_defs
The CRS is no in the EPSG database as EPSG:6312