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<?php var_dump(IDNA_CHECK_CONTEXTO );
based on h72hW
Output for 7.2.0
Warning: Use of undefined constant IDNA_CHECK_CONTEXTO - assumed 'IDNA_CHECK_CONTEXTO' (this will throw an Error in a future version of PHP) in /in/ADRZb on line 3 string(19) "IDNA_CHECK_CONTEXTO"
Output for 5.3.21 - 7.1.10
Notice: Use of undefined constant IDNA_CHECK_CONTEXTO - assumed 'IDNA_CHECK_CONTEXTO' in /in/ADRZb on line 3 string(19) "IDNA_CHECK_CONTEXTO"