<?php printf("%u",0xffffffffffffffff ); // 0 printf("%d",0xffffffffffffffff ); // 0 // max integer that can be stored as floating pt value (2 ** 53) -1: var_dump( 0x001fffffffffffff ); // float 9.007199254741E+15 var_dump( (int) 0x001fffffffffffff); // int -1 // but can do this: printf("%f", hexdec("ffffffffffffffff"));
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