3v4l.org

run code in 300+ PHP versions simultaneously
<?php $expected_array_got_string = 'somestring'; var_dump(empty($expected_array_got_string['some_key'])); var_dump(empty($expected_array_got_string[0])); var_dump(empty($expected_array_got_string['0'])); var_dump(empty($expected_array_got_string[0.5])); var_dump(empty($expected_array_got_string['0.5'])); var_dump(empty($expected_array_got_string['0 Mostel'])); echo (array)$expected_array_got_string['some_key']; echo $expected_array_got_string[0]; echo $expected_array_got_string['0']; echo $expected_array_got_string[0.6]; echo $expected_array_got_string['0.5']; echo $expected_array_got_string['0 Mostel'];

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

VersionSystem time (s)User time (s)Memory (MiB)
8.3.60.0070.00718.54
8.3.50.0040.01421.95
8.3.40.0110.00418.66
8.3.30.0070.00719.09
8.3.20.0000.00720.39
8.3.10.0040.00421.94
8.3.00.0080.00022.27
8.2.180.0140.00416.48
8.2.170.0070.00722.96
8.2.160.0070.01420.98
8.2.150.0040.00424.18
8.2.140.0050.00324.66
8.2.130.0050.00226.16
8.2.120.0050.00317.63
8.2.110.0100.01022.30
8.2.100.0060.00617.91
8.2.90.0040.00419.22
8.2.80.0040.00417.97
8.2.70.0100.00017.63
8.2.60.0060.00318.04
8.2.50.0080.00018.07
8.2.40.0100.00018.03
8.2.30.0030.00518.16
8.2.20.0080.00017.69
8.2.10.0040.00417.88
8.2.00.0040.00417.75
8.1.280.0150.00425.92
8.1.270.0050.00323.81
8.1.260.0040.00426.35
8.1.250.0030.00628.09
8.1.240.0090.00023.80
8.1.230.0100.00019.16
8.1.220.0080.00017.74
8.1.210.0080.00018.77
8.1.200.0000.01117.35
8.1.190.0090.00017.40
8.1.180.0000.00818.10
8.1.170.0000.00818.46
8.1.160.0000.00722.02
8.1.150.0000.00718.67
8.1.140.0040.00417.36
8.1.130.0030.00317.77
8.1.120.0050.00317.34
8.1.110.0080.00017.51
8.1.100.0040.00417.41
8.1.90.0050.00317.48
8.1.80.0000.00717.32
8.1.70.0030.00317.37
8.1.60.0000.00817.60
8.1.50.0020.00517.59
8.1.40.0060.00317.55
8.1.30.0000.00817.52
8.1.20.0040.00417.54
8.1.10.0030.00517.46
8.1.00.0040.00417.57
8.0.300.0000.00718.77
8.0.290.0070.00017.04
8.0.280.0070.00018.42
8.0.270.0030.00317.23
8.0.260.0030.00316.79
8.0.250.0000.00716.91
8.0.240.0050.00216.89
8.0.230.0000.00716.95
8.0.220.0030.00316.88
8.0.210.0070.00016.79
8.0.200.0030.00516.91
8.0.190.0040.00416.99
8.0.180.0070.00016.98
8.0.170.0040.00416.85
8.0.160.0040.00416.79
8.0.150.0030.00516.91
8.0.140.0040.00416.91
8.0.130.0000.00513.41
8.0.120.0000.00716.87
8.0.110.0020.00516.82
8.0.100.0000.00716.81
8.0.90.0040.00416.96
8.0.80.0060.00916.96
8.0.70.0040.00416.87
8.0.60.0040.00416.87
8.0.50.0000.00716.80
8.0.30.0080.01117.27
8.0.20.0070.01117.40
8.0.10.0000.00716.89
8.0.00.0090.01116.72
7.4.330.0030.00315.05
7.4.320.0040.00416.45
7.4.300.0050.00216.58
7.4.290.0070.00016.56
7.4.280.0050.00316.53
7.4.270.0070.00016.52
7.4.260.0040.00416.65
7.4.250.0000.00716.52
7.4.240.0020.00516.48
7.4.230.0030.00316.65
7.4.220.0070.01116.55
7.4.210.0050.01016.59
7.4.200.0030.00316.51
7.4.190.0000.00716.69
7.4.160.0100.01416.44
7.4.150.0040.01317.40
7.4.140.0080.01017.86
7.4.130.0100.00716.50
7.4.120.0060.01216.48
7.4.110.0140.00316.52
7.4.100.0120.00916.50
7.4.90.0160.00316.64
7.4.80.0110.00916.61
7.4.70.0100.00716.33
7.4.60.0110.00616.50
7.4.50.0040.00416.45
7.4.40.0120.00622.77
7.4.30.0160.00016.66
7.4.00.0060.00914.85
7.3.330.0020.00213.19
7.3.320.0030.00313.20
7.3.310.0030.00316.47
7.3.300.0030.00316.45
7.3.290.0110.00316.29
7.3.280.0080.01016.35
7.3.270.0120.00917.40
7.3.260.0100.01016.29
7.3.250.0110.00816.52
7.3.240.0130.00316.30
7.3.230.0130.00916.49
7.3.210.0070.01116.53
7.3.200.0100.01019.39
7.3.190.0040.01516.58
7.3.180.0120.00616.38
7.3.170.0130.00316.38
7.3.160.0090.00916.38
7.3.120.0070.01014.82
7.2.330.0130.00716.59
7.2.320.0070.01016.55
7.2.310.0070.01016.57
7.2.300.0090.01116.45
7.2.290.0100.00716.68
7.2.60.0060.00616.91
7.1.200.0030.00815.47
7.1.70.0000.00917.23
7.1.60.0070.01019.82
7.1.50.0120.00916.74
7.1.00.0000.07722.48
7.0.200.0030.00316.54
7.0.140.0100.06721.92
7.0.80.0030.06019.93
7.0.70.0100.07319.90
7.0.60.0130.07319.94
7.0.50.0100.04720.38
7.0.40.0000.05020.08
7.0.30.0070.08720.18
7.0.20.0000.08720.11
7.0.10.0230.07320.04
7.0.00.0130.05020.05
5.6.280.0030.07321.12
5.6.230.0100.06020.65
5.6.220.0230.06320.58
5.6.210.0170.07320.72
5.6.200.0000.08720.96
5.6.190.0070.07321.00
5.6.180.0070.08720.95
5.6.170.0100.05720.88
5.6.160.0030.04721.02
5.6.150.0100.06021.10
5.6.140.0100.07320.97
5.6.130.0030.07721.05
5.6.120.0070.09020.93
5.6.110.0200.06320.94
5.6.100.0030.08020.94
5.6.90.0070.06321.02
5.6.80.0070.06320.40
5.6.70.0100.07020.41
5.6.60.0130.07720.45
5.6.50.0100.07720.33
5.6.40.0130.07320.36
5.6.30.0030.04720.41
5.6.20.0070.08320.30
5.6.10.0200.06020.36
5.6.00.0170.04020.35
5.5.370.0070.08320.37
5.5.360.0130.07020.52
5.5.350.0070.07020.43
5.5.340.0170.06720.79
5.5.330.0070.04020.76
5.5.320.0100.07020.93
5.5.310.0130.07720.82
5.5.300.0000.04720.85
5.5.290.0070.07320.85
5.5.280.0070.07720.91
5.5.270.0170.07320.77
5.5.260.0170.08020.90
5.5.250.0030.04720.59
5.5.240.0030.08020.11
5.5.230.0030.05720.15
5.5.220.0170.04720.28
5.5.210.0170.06720.23
5.5.200.0100.07320.13
5.5.190.0100.08020.22
5.5.180.0130.06720.24
5.5.160.0130.06320.20
5.5.150.0100.07320.22
5.5.140.0130.07320.20
5.5.130.0100.05320.25
5.5.120.0100.07720.23
5.5.110.0200.04720.21
5.5.100.0130.07720.07
5.5.90.0030.08320.12
5.5.80.0070.05320.12
5.5.70.0100.07720.14
5.5.60.0070.04319.93
5.5.50.0130.06020.05
5.5.40.0070.08320.11
5.5.30.0170.06320.09
5.5.20.0130.08020.13
5.5.10.0070.06320.08
5.5.00.0170.07020.12
5.4.450.0200.06319.36
5.4.440.0130.07319.42
5.4.430.0070.04319.24
5.4.420.0100.07019.28
5.4.410.0200.03319.17
5.4.400.0070.05018.83
5.4.390.0070.08719.03
5.4.380.0130.06018.90
5.4.370.0200.04318.95
5.4.360.0070.07718.98
5.4.350.0030.07018.90
5.4.340.0100.07719.03
5.4.320.0100.07318.78
5.4.310.0100.07719.03
5.4.300.0030.07719.05
5.4.290.0070.06719.03
5.4.280.0100.06319.12
5.4.270.0100.06719.02
5.4.260.0030.08019.10
5.4.250.0100.07019.11
5.4.240.0130.03319.15
5.4.230.0130.04719.12
5.4.220.0170.06318.97
5.4.210.0030.08019.05
5.4.200.0030.04718.79
5.4.190.0000.08019.02
5.4.180.0170.06019.08
5.4.170.0100.07319.03
5.4.160.0170.06719.03
5.4.150.0100.07319.09
5.4.140.0070.04716.36
5.4.130.0100.07316.26
5.4.120.0070.04716.26
5.4.110.0100.07016.42
5.4.100.0070.07016.33
5.4.90.0100.06016.42
5.4.80.0070.07716.41
5.4.70.0070.04716.41
5.4.60.0170.06016.41
5.4.50.0130.03716.23
5.4.40.0070.07316.36
5.4.30.0030.06716.20
5.4.20.0070.07316.18
5.4.10.0170.06316.18
5.4.00.0070.07315.82
5.3.290.0030.04314.52
5.3.280.0070.08014.53
5.3.270.0070.07714.61
5.3.260.0070.07014.46
5.3.250.0130.06014.54
5.3.240.0030.05014.61
5.3.230.0100.08014.46
5.3.220.0000.07014.56
5.3.210.0100.07714.42
5.3.200.0100.06314.55
5.3.190.0070.05714.54
5.3.180.0070.08014.41
5.3.170.0170.07014.39
5.3.160.0070.04714.54
5.3.150.0100.06314.57
5.3.140.0170.06314.53
5.3.130.0070.06014.55
5.3.120.0070.07714.38
5.3.110.0070.07014.41
5.3.100.0100.04314.04
5.3.90.0030.05013.88
5.3.80.0130.05713.78
5.3.70.0070.06013.95
5.3.60.0100.06713.98
5.3.50.0000.05013.90
5.3.40.0000.04013.73
5.3.30.0030.03313.68
5.3.20.0000.04013.45
5.3.10.0100.02713.60
5.3.00.0000.05013.62
5.2.170.0000.04011.57
5.2.160.0030.02711.57
5.2.150.0030.03011.57
5.2.140.0000.03011.57
5.2.130.0000.03011.57
5.2.120.0130.02011.57
5.2.110.0000.03011.57
5.2.100.0000.03011.57
5.2.90.0030.02711.57
5.2.80.0000.03711.57
5.2.70.0030.04011.57
5.2.60.0000.03311.57
5.2.50.0030.03011.57
5.2.40.0000.03311.57
5.2.30.0000.04011.57
5.2.20.0000.02711.57
5.2.10.0070.06011.57
5.2.00.0000.02711.57
5.1.60.0030.02011.57
5.1.50.0070.03711.57
5.1.40.0070.04711.57
5.1.30.0030.06011.57
5.1.20.0000.03011.57
5.1.10.0030.04011.57
5.1.00.0030.04311.57
5.0.50.0030.04311.57
5.0.40.0070.03311.57
5.0.30.0070.02711.57
5.0.20.0000.02011.57
5.0.10.0030.01711.57
5.0.00.0000.03011.57
4.4.90.0030.01011.57
4.4.80.0000.01711.57
4.4.70.0000.01711.57
4.4.60.0100.02011.57
4.4.50.0070.02711.57
4.4.40.0000.05711.57
4.4.30.0030.01311.57
4.4.20.0030.03011.57
4.4.10.0000.02711.57
4.4.00.0000.03711.57
4.3.110.0000.02311.57
4.3.100.0000.01711.57
4.3.90.0000.01711.57
4.3.80.0030.02011.57
4.3.70.0000.03311.57
4.3.60.0030.01311.57
4.3.50.0000.01711.57
4.3.40.0030.02311.57
4.3.30.0030.01311.57
4.3.20.0000.01311.57
4.3.10.0000.01711.57
4.3.00.0030.01311.57

preferences:
42.21 ms | 401 KiB | 5 Q