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<?php var_dump(unpack('P', "\xfe\xff\xff\xff\xff\xff\xff\xff")); var_dump(unpack('q', "\xfe\xff\xff\xff\xff\xff\xff\xff"));
Output for 5.6.3 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.29, 8.2.0 - 8.2.23, 8.3.0 - 8.3.11
array(1) { [1]=> int(-2) } array(1) { [1]=> int(-2) }
Output for 4.4.8 - 4.4.9, 5.2.4 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.2
Warning: unpack(): Invalid format type P in /in/V5une on line 3 bool(false) Warning: unpack(): Invalid format type q in /in/V5une on line 4 bool(false)
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.7, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.3
array(0) { } array(0) { }

preferences:
77.71 ms | 409 KiB | 5 Q