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<?php printf('%.10f', (float) 3215465498795121321); var_dump(3215465498795121321, (float) 3215465498795121321, (int)((float)3215465498795121321));
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
3215465498795121152.0000000000int(3215465498795121321) float(3.215465498795121E+18) int(3215465498795121152)
Output for 5.2.1 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33
3215465498795121152.0000000000int(3215465498795121321) float(3.2154654987951E+18) int(3215465498795121152)
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0
3215465498795121000.0000000000int(3215465498795121321) float(3.2154654987951E+18) int(3215465498795121152)

preferences:
220.45 ms | 402 KiB | 316 Q