3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = 'hello world!'; $output = ''; for ($i = 0; $i < strlen($string); $i++) { $output .= chr($string{$i}); } echo $output;

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)
8.3.60.0040.01216.50
8.3.50.0160.01316.38
8.3.40.0040.01118.54
8.3.30.0070.00718.43
8.3.20.0040.00418.52
8.3.10.0030.00618.48
8.3.00.0080.00019.25
8.2.180.0060.00916.38
8.2.170.0110.00322.96
8.2.160.0120.00318.75
8.2.150.0090.00024.18
8.2.140.0000.00724.66
8.2.130.0070.00026.16
8.2.120.0000.00720.84
8.2.110.0090.00019.26
8.2.100.0070.00317.59
8.2.90.0000.00718.92
8.2.80.0040.00419.28
8.2.70.0060.00317.63
8.2.60.0060.00317.80
8.2.50.0030.00718.07
8.2.40.0030.00618.03
8.2.30.0000.00717.81
8.2.20.0040.00417.37
8.2.10.0000.00717.42
8.2.00.0000.00717.42
8.1.280.0070.01025.92
8.1.270.0040.00423.99
8.1.260.0030.00626.35
8.1.250.0070.00028.09
8.1.240.0060.00621.97
8.1.230.0070.00720.97
8.1.220.0000.00818.77
8.1.210.0060.00319.07
8.1.200.0030.00717.23
8.1.190.0040.00417.39
8.1.180.0050.00318.10
8.1.170.0000.01018.63
8.1.160.0000.00718.74
8.1.150.0050.00218.42
8.1.140.0080.00017.22
8.1.130.0000.00817.75
8.1.120.0040.00417.28
8.1.110.0000.00717.29
8.1.100.0050.00317.22
8.1.90.0030.00617.34
8.1.80.0000.00717.22
8.1.70.0030.00517.32
8.1.60.0040.00417.37
8.1.50.0000.00817.23
8.1.40.0000.00817.41
8.1.30.0040.00417.40
8.1.20.0040.00417.47
8.1.10.0000.00717.40
8.1.00.0050.00217.20
8.0.300.0030.00319.77
8.0.290.0070.00016.58
8.0.280.0030.00318.30
8.0.270.0000.00716.99
8.0.260.0000.00616.75
8.0.250.0070.00016.82
8.0.240.0070.00016.88
8.0.230.0040.00416.86
8.0.220.0040.00416.84
8.0.210.0040.00416.86
8.0.200.0030.00316.75
8.0.190.0040.00416.76
8.0.180.0040.00416.84
8.0.170.0030.00616.76
8.0.160.0000.00716.90
8.0.150.0000.00816.76
8.0.140.0000.00916.65
8.0.130.0000.00513.18
8.0.120.0020.00616.68
8.0.110.0000.00716.85
8.0.100.0030.00316.68
8.0.90.0030.00316.60
8.0.80.0110.01116.83
8.0.70.0040.00416.82
8.0.60.0040.00416.66
8.0.50.0040.00416.83
8.0.30.0140.00316.87
8.0.20.0050.01316.89
8.0.10.0000.00717.00
8.0.00.0110.00816.53
7.4.330.0000.00512.86
7.4.320.0060.00016.53
7.4.300.0000.00616.34
7.4.290.0000.00816.54
7.4.280.0080.00016.55
7.4.270.0000.00716.54
7.4.260.0050.00013.15
7.4.250.0080.00016.55
7.4.240.0000.00716.45
7.4.230.0070.00016.33
7.4.220.0190.00316.42
7.4.210.0100.00716.39
7.4.200.0030.00316.45
7.4.190.0030.00516.63
7.4.160.0060.01116.57
7.4.150.0120.00616.66
7.4.140.0150.00616.41
7.4.130.0100.00716.41
7.4.120.0120.00616.22
7.4.110.0100.01416.63
7.4.100.0030.01316.68
7.4.90.0170.00016.43
7.4.80.0060.01216.31
7.4.70.0060.00916.56
7.4.60.0070.01016.42
7.4.50.0000.00416.29
7.4.40.0070.01016.41
7.4.30.0080.00816.37
7.4.10.0030.01616.42
7.4.00.0100.00715.90
7.3.330.0000.00613.20
7.3.320.0040.00413.07
7.3.310.0040.00416.41
7.3.300.0000.00716.30
7.3.290.0070.00716.27
7.3.280.0060.01116.32
7.3.270.0120.00916.48
7.3.260.0090.00916.41
7.3.250.0100.00816.45
7.3.240.0100.00716.46
7.3.230.0080.01216.57
7.3.210.0100.00716.41
7.3.200.0110.01119.39
7.3.190.0080.00816.39
7.3.180.0070.01016.25
7.3.170.0150.00016.56
7.3.160.0090.01216.55
7.3.130.0040.01216.47
7.3.120.0050.01015.97
7.3.110.0030.01016.15
7.3.100.0060.01016.21
7.3.90.0070.00616.37
7.3.80.0050.01216.44
7.3.70.0070.00816.28
7.3.60.0040.01116.43
7.3.50.0060.00816.32
7.3.40.0020.01616.27
7.3.30.0090.00616.29
7.3.20.0040.00718.06
7.3.10.0040.00918.11
7.3.00.0080.00518.16
7.2.330.0110.01116.41
7.2.320.0090.00916.52
7.2.310.0150.00316.42
7.2.300.0100.01316.58
7.2.290.0090.00916.48
7.2.260.0070.01216.39
7.2.250.0070.01016.74
7.2.240.0110.00516.50
7.2.230.0090.00516.52
7.2.220.0080.00816.52
7.2.210.0050.01016.56
7.2.200.0070.00716.54
7.2.190.0080.00516.57
7.2.180.0050.01116.52
7.2.170.0060.00916.57
7.2.160.0030.01016.48
7.2.150.0090.00718.41
7.2.140.0050.00918.29
7.2.130.0080.00518.52
7.2.120.0030.00718.20
7.2.110.0050.00718.39
7.2.100.0030.00918.31
7.2.90.0100.00518.42
7.2.80.0050.01318.24
7.2.70.0020.00918.20
7.2.60.0060.00917.76
7.2.50.0090.00618.31
7.2.40.0070.00518.46
7.2.30.0070.01018.48
7.2.20.0050.01018.39
7.2.10.0070.00718.45
7.2.00.0050.01018.72
7.1.330.0020.01317.57
7.1.320.0060.00917.54
7.1.310.0060.00917.47
7.1.300.0070.00817.22
7.1.290.0110.00617.36
7.1.280.0080.00617.33
7.1.270.0050.00817.24
7.1.260.0020.01217.24
7.1.250.0050.00717.24
7.1.240.0030.00917.42
7.1.230.0000.01117.41
7.1.220.0030.00717.22
7.1.210.0050.01017.29
7.1.200.0080.00916.88
7.1.190.0040.00917.26
7.1.180.0120.00317.34
7.1.170.0060.00617.33
7.1.160.0040.00617.36
7.1.150.0020.01117.24
7.1.140.0030.00917.36
7.1.130.0060.00817.28
7.1.120.0070.00417.30
7.1.110.0060.00917.43
7.1.100.0050.00817.61
7.1.90.0050.01017.30
7.1.80.0050.00917.26
7.1.70.0030.00717.34
7.1.60.0050.00917.34
7.1.50.0100.00717.22
7.1.40.0070.00517.35
7.1.30.0020.00817.39
7.1.20.0050.01017.30
7.1.10.0060.00517.27
7.1.00.0030.02818.89
7.0.330.0020.00817.00
7.0.320.0080.00317.15
7.0.310.0060.00717.14
7.0.300.0060.00717.08
7.0.290.0040.00816.92
7.0.280.0070.00516.96
7.0.270.0070.00716.91
7.0.260.0070.00916.98
7.0.250.0090.00517.01
7.0.240.0050.00917.13
7.0.230.0050.00916.92
7.0.220.0100.00516.97
7.0.210.0060.00716.94
7.0.200.0050.00916.74
7.0.190.0030.00917.05
7.0.180.0080.00717.04
7.0.170.0000.00917.08
7.0.160.0070.00817.07
7.0.150.0060.00916.97
7.0.140.0050.02918.79
7.0.130.0100.00516.96
7.0.120.0040.02418.71
7.0.110.0060.00416.92
7.0.100.0050.00816.91
7.0.90.0080.00316.99
7.0.80.0020.01317.07
7.0.70.0050.00817.01
7.0.60.0060.03117.97
7.0.50.0030.03417.30
7.0.40.0060.03516.63
7.0.30.0130.01816.76
7.0.20.0130.03016.71
7.0.10.0070.03516.71
7.0.00.0090.03116.67
5.6.400.0060.00615.97
5.6.390.0020.01216.08
5.6.380.0020.00716.03
5.6.370.0060.00715.90
5.6.360.0130.00116.13
5.6.350.0080.00815.84
5.6.340.0100.00715.80
5.6.330.0060.00716.08
5.6.320.0110.00515.74
5.6.310.0030.01415.61
5.6.300.0070.00515.98
5.6.290.0070.01016.13
5.6.280.0010.03317.79
5.6.270.0080.00516.05
5.6.260.0050.00715.92
5.6.250.0070.00515.81
5.6.240.0040.00715.86
5.6.230.0060.00515.92
5.6.220.0050.00815.88
5.6.210.0060.03217.49
5.6.200.0030.02216.77
5.6.190.0050.02017.53
5.6.180.0100.02417.46
5.6.170.0150.02717.52
5.6.160.0030.02917.41
5.6.150.0080.03016.69
5.6.140.0080.01716.63
5.6.130.0080.03216.59
5.6.120.0090.03017.57
5.6.110.0090.03117.49
5.6.100.0120.03117.48
5.6.90.0090.03017.58
5.6.80.0040.01917.36
5.6.70.0060.01115.76
5.6.60.0030.01315.85
5.6.50.0030.01015.83
5.6.40.0050.00915.96
5.6.30.0050.01215.94
5.6.20.0060.00615.79
5.6.10.0020.01515.71
5.6.00.0080.00615.88
5.5.380.0070.00415.97
5.5.370.0060.00716.03
5.5.360.0050.00915.81
5.5.350.0160.02017.50
5.5.340.0020.03316.48
5.5.330.0050.02117.29
5.5.320.0150.03217.48
5.5.310.0140.02217.18
5.5.300.0060.01816.56
5.5.290.0060.03516.67
5.5.280.0080.01917.53
5.5.270.0080.02917.42
5.5.260.0040.02717.42
5.5.250.0080.02417.41
5.5.240.0030.03217.26
5.5.230.0110.00615.64
5.5.220.0110.00515.72
5.5.210.0070.00815.79
5.5.200.0110.00715.77
5.5.190.0100.00715.67
5.5.180.0060.00815.79
5.5.170.0060.01015.76
5.5.160.0040.01415.61
5.5.150.0070.01015.93
5.5.140.0020.01415.92
5.5.130.0050.01215.91
5.5.120.0040.01015.79
5.5.110.0080.01015.78
5.5.100.0070.00615.77
5.5.90.0070.00915.67
5.5.80.0080.00815.65
5.5.70.0100.01015.61
5.5.60.0060.01215.72
5.5.50.0140.00415.78
5.5.40.0120.00815.77
5.5.30.0070.00915.74
5.5.20.0110.00815.61
5.5.10.0050.01415.76
5.5.00.0100.00715.78
5.4.450.1290.01514.77
5.4.440.1080.01614.70
5.4.430.1250.01514.81
5.4.420.1030.01814.96
5.4.410.1050.01814.85
5.4.400.1130.01614.71
5.4.390.1180.01914.88
5.4.380.1250.01314.73
5.4.370.1150.01414.72
5.4.360.1310.01814.65
5.4.350.1230.01814.67
5.4.340.1200.01514.79
5.4.330.0030.01012.34
5.4.320.1190.01314.63
5.4.310.1200.02014.64
5.4.300.1130.01914.67
5.4.290.1480.01814.68
5.4.280.1190.01714.72
5.4.270.1210.01414.51
5.4.260.1200.02014.65
5.4.250.1210.01714.83
5.4.240.1230.01914.75
5.4.230.1190.01714.57
5.4.220.1070.01914.58
5.4.210.1100.02014.68
5.4.200.1210.01714.55
5.4.190.1250.01614.71
5.4.180.1100.02014.75
5.4.170.1310.01414.71
5.4.160.1270.01414.54
5.4.150.1250.01814.78
5.4.140.1170.01613.84
5.4.130.0970.01913.83
5.4.120.1610.01513.75
5.4.110.1070.01613.84
5.4.100.0640.01813.66
5.4.90.1120.01513.81
5.4.80.1090.02013.75
5.4.70.1250.01413.82
5.4.60.1240.01613.89
5.4.50.1270.01413.90
5.4.40.1370.01713.84
5.4.30.1330.01913.90
5.4.20.1220.01613.82
5.4.10.1300.01313.79
5.4.00.1170.01313.65
5.3.290.1200.01713.54
5.3.280.1250.01913.44
5.3.270.1150.01813.51
5.3.260.1130.01813.55
5.3.250.0900.02013.56
5.3.240.1180.01613.50
5.3.230.1070.01913.54
5.3.220.1120.01613.47
5.3.210.1180.01713.31
5.3.200.0650.02113.48
5.3.190.1040.02013.44
5.3.180.1010.01213.58
5.3.170.1140.01613.42
5.3.160.1260.01613.57
5.3.150.1290.01313.59
5.3.140.1150.01913.57
5.3.130.1340.01913.56
5.3.120.1200.01713.40
5.3.110.1260.01513.53
5.3.100.1280.01613.29
5.3.90.1240.01513.37
5.3.80.1210.01913.09
5.3.70.1260.01713.22
5.3.60.1370.01413.35
5.3.50.1790.01413.22
5.3.40.1130.01513.24
5.3.30.1210.01713.33
5.3.20.1160.01913.15
5.3.10.0960.01713.02
5.3.00.1160.01612.99
5.2.170.3030.03011.05
5.2.160.3130.03011.05
5.2.150.3230.03311.19
5.2.140.2900.03310.98
5.2.130.3900.02310.95
5.2.120.3170.02710.95
5.2.110.2930.02311.25
5.2.100.1930.04011.04
5.2.90.3230.03311.04
5.2.80.3030.03710.94
5.2.70.2930.03011.03
5.2.60.3070.03011.14
5.2.50.3130.04010.86
5.2.40.2530.02710.83
5.2.30.2900.03011.01
5.2.20.2770.02710.80
5.2.10.2570.02710.81
5.2.00.2570.03310.78
5.1.60.2670.02710.20
5.1.50.2470.02710.20
5.1.40.2570.03310.20
5.1.30.2470.03010.41
5.1.20.2600.03010.25
5.1.10.2500.02010.20
5.1.00.2900.02010.20
5.0.50.1100.02010.20
5.0.40.1370.02010.20
5.0.30.1400.03310.20
5.0.20.0700.02310.20
5.0.10.1170.01710.20
5.0.00.1270.03310.20
4.4.90.1370.01310.20
4.4.80.1400.02010.20
4.4.70.1370.02010.20
4.4.60.1570.01310.20
4.4.50.1530.01310.20
4.4.40.1430.02710.20
4.4.30.1330.01310.20
4.4.20.1330.01710.20
4.4.10.1170.01010.20
4.4.00.1070.02010.20
4.3.110.1170.01310.20
4.3.100.1200.01710.20
4.3.90.1170.01710.20
4.3.80.1070.02710.20
4.3.70.1230.01310.20
4.3.60.1100.01710.20
4.3.50.1130.01310.20
4.3.40.1230.02310.20
4.3.30.0570.01310.20
4.3.20.0570.01310.20
4.3.10.0670.02010.20
4.3.00.0570.01310.20

preferences:
53.14 ms | 401 KiB | 5 Q