3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = "Narendra"; $strrev = ""; $i = 0; while(isset($str[$i])){ $strrev = $str[$i].$strrev; $i++; } echo $strrev;

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)
8.3.60.0070.01418.30
8.3.50.0090.00618.06
8.3.40.0120.00318.89
8.3.30.0040.01118.88
8.3.20.0070.00019.39
8.3.10.0040.00421.91
8.3.00.0050.00320.55
8.2.180.0090.00616.38
8.2.170.0030.01022.96
8.2.160.0060.01020.35
8.2.150.0080.00024.18
8.2.140.0030.00524.66
8.2.130.0070.00726.16
8.2.120.0040.00420.95
8.2.110.0030.00622.04
8.2.100.0110.00019.57
8.2.90.0060.00317.63
8.2.80.0040.00418.77
8.2.70.0000.00919.28
8.2.60.0000.00817.63
8.2.50.0050.00317.75
8.2.40.0030.00519.48
8.2.30.0000.00720.50
8.2.20.0040.00417.65
8.2.10.0050.00217.99
8.2.00.0040.00418.02
8.1.280.0160.00725.92
8.1.270.0040.00423.83
8.1.260.0040.00426.35
8.1.250.0000.00828.09
8.1.240.0040.00420.41
8.1.230.0060.00617.70
8.1.220.0040.00417.79
8.1.210.0030.00518.77
8.1.200.0040.00417.35
8.1.190.0030.00517.35
8.1.180.0000.00918.10
8.1.170.0030.00617.62
8.1.160.0000.00718.91
8.1.150.0000.00818.89
8.1.140.0040.00419.57
8.1.130.0000.00717.57
8.1.120.0030.00417.50
8.1.110.0000.00717.38
8.1.100.0000.00717.34
8.1.90.0040.00417.45
8.1.80.0030.00417.44
8.1.70.0080.00017.47
8.1.60.0080.00017.46
8.1.50.0030.00617.53
8.1.40.0060.00317.49
8.1.30.0050.00317.47
8.1.20.0040.00417.64
8.1.10.0030.00717.55
8.1.00.0000.00917.50
8.0.300.0000.00718.77
8.0.290.0050.00316.75
8.0.280.0000.00718.39
8.0.270.0070.00017.12
8.0.260.0030.00617.18
8.0.250.0050.00216.93
8.0.240.0030.00316.96
8.0.230.0030.00316.91
8.0.220.0000.00716.93
8.0.210.0040.00416.92
8.0.200.0050.00516.95
8.0.190.0050.00216.98
8.0.180.0040.00416.86
8.0.170.0040.00416.80
8.0.160.0000.00716.78
8.0.150.0000.00716.73
8.0.140.0080.00016.74
8.0.130.0080.00013.31
8.0.120.0040.00416.94
8.0.110.0000.00716.92
8.0.100.0030.00516.86
8.0.90.0030.00316.92
8.0.80.0090.00616.79
8.0.70.0040.00416.82
8.0.60.0040.00416.91
8.0.50.0040.00416.90
8.0.30.0100.00816.88
8.0.20.0080.01217.40
8.0.10.0040.00417.02
8.0.00.0060.01116.70
7.4.330.0000.00415.08
7.4.320.0000.00616.57
7.4.300.0030.00316.58
7.4.290.0030.00316.49
7.4.280.0040.00416.59
7.4.270.0030.00316.50
7.4.260.0000.00716.63
7.4.250.0000.00716.60
7.4.240.0000.00716.42
7.4.230.0000.00716.43
7.4.220.0080.00816.36
7.4.210.0060.01016.36
7.4.200.0050.00316.62
7.4.160.0090.00616.31
7.4.150.0050.01417.40
7.4.140.0060.01117.86
7.4.130.0080.01016.49
7.4.120.0080.01016.48
7.4.110.0080.01116.37
7.4.100.0100.00716.57
7.4.90.0120.00616.65
7.4.80.0200.00019.39
7.4.70.0090.00616.42
7.4.60.0100.00716.34
7.4.50.0040.01116.43
7.4.40.0100.01016.41
7.4.30.0130.01016.29
7.4.10.0090.00914.71
7.4.00.0110.00814.79
7.3.330.0030.00313.04
7.3.320.0000.00513.10
7.3.310.0030.00316.32
7.3.300.0020.00516.30
7.3.290.0070.00016.22
7.3.280.0070.00916.23
7.3.270.0040.01417.40
7.3.260.0080.01216.40
7.3.250.0100.00916.36
7.3.240.0130.00516.31
7.3.230.0030.01416.39
7.3.210.0100.00616.47
7.3.200.0070.01016.60
7.3.190.0100.00616.55
7.3.180.0090.00616.34
7.3.170.0090.01216.37
7.3.160.0090.01216.31
7.3.130.0080.00814.86
7.3.120.0060.00614.76
7.3.110.0090.00914.96
7.3.100.0090.00614.95
7.3.90.0070.00714.73
7.3.80.0080.00414.93
7.3.70.0030.01414.55
7.3.60.0030.00714.80
7.3.50.0040.01114.94
7.3.40.0030.01014.92
7.3.30.0030.00514.89
7.3.20.0070.00416.73
7.3.10.0020.01216.49
7.3.00.0030.01016.72
7.2.330.0100.00716.47
7.2.320.0060.01016.73
7.2.310.0130.00916.70
7.2.300.0060.01216.80
7.2.290.0110.01016.63
7.2.260.0110.00715.11
7.2.250.0070.01014.97
7.2.240.0000.01514.88
7.2.230.0120.00415.01
7.2.220.0030.01315.02
7.2.210.0100.00314.75
7.2.200.0070.00715.04
7.2.190.0090.00615.07
7.2.180.0030.01015.00
7.2.170.0040.00815.15
7.2.160.0030.00614.76
7.2.150.0030.01016.93
7.2.140.0040.00816.84
7.2.130.0030.00816.87
7.2.120.0080.00816.86
7.2.110.0040.01016.87
7.2.100.0040.01116.97
7.2.90.0070.01016.88
7.2.80.0000.01216.67
7.2.70.0100.00716.97
7.2.60.0060.00916.79
7.2.50.0000.01417.05
7.2.40.0060.00916.88
7.2.30.0030.01116.99
7.2.20.0080.00816.82
7.2.10.0020.00917.01
7.2.00.0060.00917.62
7.1.330.0140.00015.80
7.1.320.0030.00715.48
7.1.310.0170.00015.48
7.1.300.0040.00715.79
7.1.290.0040.00415.89
7.1.280.0000.01315.68
7.1.270.0030.00915.75
7.1.260.0090.00615.79
7.1.250.0060.00515.72
7.1.240.0070.01015.90
7.1.230.0040.00415.82
7.1.220.0040.00715.83
7.1.210.0030.01015.71
7.1.200.0050.00715.82
7.1.190.0030.01315.86
7.1.180.0070.01015.86
7.1.170.0030.01315.55
7.1.160.0000.01815.54
7.1.150.0030.00915.69
7.1.140.0150.00315.65
7.1.130.0030.01015.59
7.1.120.0040.01115.69
7.1.110.0000.01515.72
7.1.100.0070.00716.98
7.1.90.0100.00615.82
7.1.80.0090.00915.96
7.1.70.0070.00416.38
7.1.60.0050.01617.59
7.1.50.0120.00615.68
7.1.40.0060.00315.74
7.1.30.0070.00715.71
7.1.20.0070.00715.69
7.1.10.0000.01015.89
7.1.00.0080.03818.92
7.0.330.0000.01315.30
7.0.320.0050.00915.18
7.0.310.0020.00915.42
7.0.300.0070.01115.50
7.0.290.0030.01015.35
7.0.280.0110.00715.04
7.0.270.0030.01315.05
7.0.260.0000.01315.08
7.0.250.0150.00015.30
7.0.240.0000.01715.59
7.0.230.0100.00315.48
7.0.220.0100.00715.41
7.0.210.0100.00315.31
7.0.200.0100.00515.04
7.0.190.0040.01215.40
7.0.180.0090.00315.11
7.0.170.0070.00414.90
7.0.160.0040.01115.31
7.0.150.0130.00015.34
7.0.140.0000.01115.07
7.0.130.0080.00615.45
7.0.120.0040.00815.39
7.0.110.0040.00815.46
7.0.100.0120.00315.20
7.0.90.0050.00815.02
7.0.80.0060.00615.24
7.0.70.0070.00715.41
7.0.60.0370.00417.67
7.0.50.0580.00317.74
7.0.40.0480.00316.97
7.0.30.0580.00416.93
7.0.20.0490.00416.86
7.0.10.0520.00216.82
7.0.00.0450.00416.79
5.6.400.0060.00314.41
5.6.390.0000.01114.45
5.6.380.0070.00714.49
5.6.370.0090.00014.22
5.6.360.0030.01014.12
5.6.350.0030.01014.25
5.6.340.0140.00014.08
5.6.330.0050.00514.27
5.6.320.0080.00314.52
5.6.310.0110.00614.32
5.6.300.0050.00514.70
5.6.290.0070.00714.62
5.6.280.0050.04117.62
5.6.270.0110.00014.54
5.6.260.0130.00014.53
5.6.250.0080.00414.05
5.6.240.0040.00814.50
5.6.230.0080.00414.18
5.6.220.0040.00814.42
5.6.210.0390.00117.52
5.6.200.0570.00617.79
5.6.190.0450.00417.69
5.6.180.0400.00717.86
5.6.170.0580.00417.56
5.6.160.0450.00417.69
5.6.150.0430.00517.59
5.6.140.0450.00317.95
5.6.130.0450.00417.73
5.6.120.0450.00017.63
5.6.110.0520.00117.68
5.6.100.0450.00317.80
5.6.90.0480.00117.84
5.6.80.0440.00417.46
5.6.70.0460.00017.30
5.6.60.0430.00517.43
5.6.50.0450.00217.41
5.6.40.0450.00517.34
5.6.30.0430.00317.37
5.6.20.0480.00317.34
5.6.10.0430.00617.35
5.6.00.0480.00517.39
5.5.380.0090.00614.31
5.5.370.0070.00714.39
5.5.360.0080.00414.54
5.5.350.0460.00417.23
5.5.340.0630.00417.59
5.5.330.0450.00317.55
5.5.320.0550.00517.51
5.5.310.0490.00317.58
5.5.300.0380.00517.73
5.5.290.0390.00617.49
5.5.280.0420.00017.54
5.5.270.0530.00517.52
5.5.260.0520.00217.59
5.5.250.0600.00317.47
5.5.240.0430.00617.20
5.5.230.0460.00317.05
5.5.220.0500.00317.36
5.5.210.0400.00717.13
5.5.200.0420.00517.06
5.5.190.0640.00117.38
5.5.180.0450.00317.31
5.5.170.0030.00713.92
5.5.160.0400.00317.30
5.5.150.0390.00317.29
5.5.140.0420.00417.17
5.5.130.0380.00517.40
5.5.120.0370.00717.31
5.5.110.0390.00617.16
5.5.100.0420.00517.10
5.5.90.0360.00317.21
5.5.80.0400.00917.16
5.5.70.0350.00617.24
5.5.60.0360.00417.14
5.5.50.0400.00017.18
5.5.40.0360.00617.09
5.5.30.0410.00217.09
5.5.20.0380.00317.23
5.5.10.0380.00317.19
5.5.00.0380.00517.11

preferences:
63.78 ms | 401 KiB | 5 Q