3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = array( '1' => 'elem 1'); $str = serialize($array); print_r($str);

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)
8.3.40.0070.00718.35
8.3.30.0070.01119.14
8.3.20.0050.00220.20
8.3.10.0070.00022.00
8.3.00.0040.00422.45
8.2.170.0100.00722.96
8.2.160.0080.00620.80
8.2.150.0040.00424.18
8.2.140.0060.00324.66
8.2.130.0060.00326.16
8.2.120.0080.00019.36
8.2.110.0030.00622.27
8.2.100.0080.00319.42
8.2.90.0040.00419.23
8.2.80.0030.00517.97
8.2.70.0060.00317.63
8.2.60.0040.00417.93
8.2.50.0050.00318.07
8.2.40.0030.00718.03
8.2.30.0050.00217.89
8.2.20.0050.00217.62
8.2.10.0040.00417.75
8.2.00.0000.00717.75
8.1.270.0070.00022.14
8.1.260.0000.00726.35
8.1.250.0080.00028.09
8.1.240.0030.00623.82
8.1.230.0060.00619.09
8.1.220.0040.00417.74
8.1.210.0000.00818.77
8.1.200.0000.00817.35
8.1.190.0040.00417.30
8.1.180.0050.00318.10
8.1.170.0040.00418.59
8.1.160.0040.00421.98
8.1.150.0000.00718.62
8.1.140.0040.00417.42
8.1.130.0030.00517.78
8.1.120.0070.00017.38
8.1.110.0040.00417.34
8.1.100.0040.00417.27
8.1.90.0040.00417.31
8.1.80.0070.00017.39
8.1.70.0070.00017.27
8.1.60.0000.00817.40
8.1.50.0070.00017.39
8.1.40.0000.00717.36
8.1.30.0000.00817.60
8.1.20.0000.00817.57
8.1.10.0000.00717.41
8.1.00.0000.00817.21
8.0.300.0070.00018.77
8.0.290.0070.00016.91
8.0.280.0000.00718.29
8.0.270.0040.00317.19
8.0.260.0000.00716.80
8.0.250.0030.00316.78
8.0.240.0030.00316.92
8.0.230.0000.00816.93
8.0.220.0070.00016.84
8.0.210.0040.00416.78
8.0.200.0030.00316.77
8.0.190.0040.00416.75
8.0.180.0000.00716.84
8.0.170.0070.00016.81
8.0.160.0040.00416.87
8.0.150.0070.00016.66
8.0.140.0080.00016.74
8.0.130.0000.00513.30
8.0.120.0050.00316.77
8.0.110.0000.00816.73
8.0.100.0070.00016.76
8.0.90.0040.00416.77
8.0.80.0090.01216.81
8.0.70.0040.00416.64
8.0.60.0080.00016.81
8.0.50.0040.00416.77
8.0.30.0130.00916.98
8.0.20.0100.01217.40
8.0.10.0000.00816.99
8.0.00.0070.00916.58
7.4.330.0050.00015.14
7.4.320.0070.00016.42
7.4.300.0030.00316.51
7.4.290.0040.00416.44
7.4.280.0000.00816.56
7.4.270.0070.00016.44
7.4.260.0050.00316.48
7.4.250.0080.00016.39
7.4.240.0030.00316.52
7.4.230.0000.00616.46
7.4.220.0160.00716.62
7.4.210.0040.01016.53
7.4.200.0000.00716.28
7.4.190.0000.00716.51
7.4.160.0090.00616.30
7.4.150.0100.00717.40
7.4.140.0140.00517.86
7.4.130.0070.01416.31
7.4.120.0100.00716.41
7.4.110.0070.01016.30
7.4.100.0100.00716.32
7.4.90.0180.00016.36
7.4.80.0130.01019.39
7.4.70.0110.00816.27
7.4.60.0130.00316.45
7.4.50.0000.00816.49
7.4.40.0100.00622.77
7.4.30.0130.00316.36
7.4.00.0120.00414.90
7.3.330.0050.00012.88
7.3.320.0050.00013.12
7.3.310.0000.00716.09
7.3.300.0030.00316.13
7.3.290.0070.00816.09
7.3.280.0060.01116.14
7.3.270.0070.01417.40
7.3.260.0040.01316.48
7.3.250.0100.00716.23
7.3.240.0040.01316.16
7.3.230.0130.00416.39
7.3.210.0030.01316.24
7.3.200.0090.00919.39
7.3.190.0100.00716.18
7.3.180.0100.01016.21
7.3.170.0140.00316.27
7.3.160.0060.00916.16
7.3.120.0120.00314.76
7.3.110.0040.01114.50
7.3.100.0030.01414.95
7.3.90.0100.00714.76
7.3.80.0030.01314.73
7.3.70.0070.00314.53
7.3.60.0030.01314.53
7.3.50.0070.01014.84
7.3.40.0070.00714.69
7.3.30.0070.01014.59
7.3.20.0000.01716.42
7.3.10.0030.01316.58
7.3.00.0090.00316.61
7.2.330.0070.01316.36
7.2.320.0130.00416.34
7.2.310.0090.01016.57
7.2.300.0100.00716.21
7.2.290.0120.00616.37
7.2.240.0110.00414.74
7.2.230.0030.00914.79
7.2.220.0040.01414.86
7.2.210.0140.00314.72
7.2.200.0060.00615.13
7.2.190.0090.00614.77
7.2.180.0100.00714.96
7.2.170.0070.00714.53
7.2.160.0060.01015.07
7.2.150.0070.01116.69
7.2.140.0000.01116.75
7.2.130.0130.00116.80
7.2.120.0110.00516.81
7.2.110.0050.00916.81
7.2.100.0090.00716.70
7.2.90.0100.00716.81
7.2.80.0070.00816.84
7.2.70.0020.01116.79
7.2.60.0060.00916.84
7.2.50.0050.01016.64
7.2.40.0050.00816.81
7.2.30.0070.00816.83
7.2.20.0090.00316.80
7.2.10.0070.00716.82
7.2.00.0040.01017.58
7.1.330.0060.00915.96
7.1.320.0080.00815.59
7.1.310.0110.00415.48
7.1.300.0110.00415.41
7.1.290.0070.01015.71
7.1.280.0040.00715.46
7.1.270.0070.00715.72
7.1.260.0060.00915.79
7.1.250.0070.00715.89
7.1.100.0030.01018.13
7.1.70.0000.00716.94
7.1.60.0100.01319.82
7.1.50.0090.01216.57
7.1.00.0030.07722.45
7.0.200.0040.00416.56
7.0.140.0000.06721.95
7.0.80.0430.06719.86
7.0.70.0530.08320.01
7.0.60.0470.05319.92
7.0.50.0570.08320.32
7.0.40.0100.07320.08
7.0.30.0070.07720.17
7.0.20.0170.06020.15
7.0.10.0030.06720.11
7.0.00.0000.05020.13
5.6.280.0030.04720.81
5.6.230.0170.06720.62
5.6.220.0130.06320.67
5.6.210.0100.08020.66
5.6.200.0070.08721.05
5.6.190.0030.05721.16
5.6.180.0170.07721.13
5.6.170.0100.06721.07
5.6.160.0100.04021.10
5.6.150.0000.04320.95
5.6.140.0070.04020.92
5.6.130.0170.03721.08
5.6.120.0200.07021.01
5.6.110.0200.06021.07
5.6.100.0170.05021.01
5.6.90.0070.06321.14
5.6.80.0130.05720.26
5.6.70.0070.06720.43
5.6.60.0000.07720.42
5.6.50.0070.04320.39
5.6.40.0070.04720.38
5.6.30.0030.05720.38
5.6.20.0200.06720.48
5.6.10.0200.06320.45
5.6.00.0130.07320.34
5.5.370.0100.08020.38
5.5.360.0170.07320.34
5.5.350.0030.06720.36
5.5.340.0030.05720.91
5.5.330.0070.04720.91
5.5.320.0100.05020.86
5.5.310.0030.06020.79
5.5.300.0130.07320.72
5.5.290.0030.06320.68
5.5.280.0100.05320.90
5.5.270.0070.04720.89
5.5.260.0130.07320.81
5.5.250.0030.05720.72
5.5.240.0030.05020.16
5.5.230.0000.04720.27
5.5.220.0100.06020.27
5.5.210.0030.08320.20
5.5.200.0070.06020.27
5.5.190.0100.06720.11
5.5.180.0200.07320.23
5.5.160.0130.07320.12
5.5.150.0030.07320.20
5.5.140.0100.05020.25
5.5.130.0070.06020.11
5.5.120.0070.07719.98
5.5.110.0170.07320.22
5.5.100.0070.07320.04
5.5.90.0200.06720.14
5.5.80.0100.05320.14
5.5.70.0070.08319.99
5.5.60.0130.07320.04
5.5.50.0030.08320.07
5.5.40.0070.07320.03
5.5.30.0030.05020.13
5.5.20.0000.06320.07
5.5.10.0030.07020.02
5.5.00.0100.08020.11
5.4.450.0070.08319.38
5.4.440.0100.06019.42
5.4.430.0130.06319.35
5.4.420.0100.07019.55
5.4.410.0130.06719.00
5.4.400.0100.06718.99
5.4.390.0000.08319.08
5.4.380.0130.07019.04
5.4.370.0000.07019.12
5.4.360.0100.05019.12
5.4.350.0070.03718.95
5.4.340.0100.07018.95
5.4.320.0200.07318.95
5.4.310.0100.06319.14
5.4.300.0070.06719.18
5.4.290.0130.05718.90
5.4.280.0200.06718.97
5.4.270.0030.05719.02
5.4.260.0100.07319.03
5.4.250.0070.07718.80
5.4.240.0130.03319.04
5.4.230.0100.07019.14
5.4.220.0000.08719.14
5.4.210.0070.07319.12
5.4.200.0070.06318.94
5.4.190.0130.06319.02
5.4.180.0130.06718.96
5.4.170.0030.07718.95
5.4.160.0000.04318.79
5.4.150.0130.06718.78
5.4.140.0130.06716.27
5.4.130.0100.06316.36
5.4.120.0000.07016.38
5.4.110.0030.07316.20
5.4.100.0000.05316.34
5.4.90.0030.06316.42
5.4.80.0070.04316.31
5.4.70.0000.04316.21
5.4.60.0030.04016.23
5.4.50.0070.06016.20
5.4.40.0070.04316.34
5.4.30.0030.05016.42
5.4.20.0100.07316.18
5.4.10.0070.06716.39
5.4.00.0070.06715.57
5.3.290.0100.07014.65
5.3.280.0030.08014.55
5.3.270.0100.07314.60
5.3.260.0070.03714.54
5.3.250.0170.05314.56
5.3.240.0000.08014.61
5.3.230.0130.05014.57
5.3.220.0100.04014.52
5.3.210.0070.04314.55
5.3.200.0070.05714.54
5.3.190.0000.05314.52
5.3.180.0170.05714.41
5.3.170.0030.05714.56
5.3.160.0070.07314.54
5.3.150.0030.04014.52
5.3.140.0070.07314.56
5.3.130.0170.05714.53
5.3.120.0130.07014.45
5.3.110.0070.04314.52
5.3.100.0100.06313.89
5.3.90.0100.04314.00
5.3.80.0100.05313.87
5.3.70.0030.04013.97
5.3.60.0100.05713.86
5.3.50.0030.07713.90
5.3.40.0100.03013.71
5.3.30.0170.04313.71
5.3.20.0070.06313.67
5.3.10.0100.06313.57
5.3.00.0030.04013.39
5.2.170.0130.02712.46
5.2.160.0000.05312.46
5.2.150.0030.06312.46
5.2.140.0070.04312.46
5.2.130.0030.04312.46
5.2.120.0070.04312.46
5.2.110.0000.06312.46
5.2.100.0130.05012.46
5.2.90.0130.03312.46
5.2.80.0070.03012.46
5.2.70.0070.03312.46
5.2.60.0000.03012.46
5.2.50.0030.04712.46
5.2.40.0000.04012.46
5.2.30.0070.06712.46
5.2.20.0100.04712.46
5.2.10.0070.06012.46
5.2.00.0030.05712.46
5.1.60.0030.04012.46
5.1.50.0000.03712.46
5.1.40.0000.05712.46
5.1.30.0100.05012.46
5.1.20.0030.05712.46
5.1.10.0100.05012.46
5.1.00.0000.04312.46
5.0.50.0070.04312.46
5.0.40.0030.02312.46
5.0.30.0000.06012.46
5.0.20.0000.02712.46
5.0.10.0030.04012.46
5.0.00.0030.04312.46
4.4.90.0000.02712.46
4.4.80.0000.01712.46
4.4.70.0000.02712.46
4.4.60.0000.03712.46
4.4.50.0030.03312.46
4.4.40.0000.03712.46
4.4.30.0030.03712.46
4.4.20.0000.03312.46
4.4.10.0100.03012.46
4.4.00.0000.05012.46
4.3.110.0030.02312.46
4.3.100.0070.01712.46
4.3.90.0030.02012.46
4.3.80.0000.04012.46
4.3.70.0070.01712.46
4.3.60.0000.03312.46
4.3.50.0000.03712.46
4.3.40.0030.03312.46
4.3.30.0030.03312.46
4.3.20.0000.04012.46
4.3.10.0070.02712.46
4.3.00.0030.03012.46

preferences:
41.87 ms | 400 KiB | 5 Q