3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = "ZEESHAN"; $reverse = ""; for($i = strlen($string)-1; $i >= 0; $i--){ $reverse .= $string[$i]; } echo $reverse;

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)
8.3.60.0130.00716.63
8.3.50.0090.00616.29
8.3.40.0140.00418.68
8.3.30.0100.00318.89
8.3.20.0060.00920.37
8.3.10.0120.00623.71
8.3.00.0080.00023.66
8.2.180.0130.00318.16
8.2.170.0210.00022.96
8.2.160.0030.01020.52
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0050.00219.82
8.2.120.0000.00726.35
8.2.110.0060.00320.89
8.2.100.0110.00017.70
8.2.90.0000.00819.36
8.2.80.0040.00417.97
8.2.70.0080.00017.63
8.2.60.0050.00318.16
8.2.50.0050.00318.10
8.2.40.0080.00420.50
8.2.30.0000.00719.60
8.2.20.0040.00417.61
8.2.10.0040.00418.11
8.2.00.0060.00318.13
8.1.280.0090.00625.92
8.1.270.0040.01123.89
8.1.260.0040.00428.09
8.1.250.0050.00328.09
8.1.240.0030.00620.82
8.1.230.0110.00017.55
8.1.220.0000.00817.74
8.1.210.0000.00818.77
8.1.200.0080.00017.23
8.1.190.0040.00417.23
8.1.180.0030.00618.10
8.1.170.0000.00718.59
8.1.160.0070.00020.60
8.1.150.0000.00818.80
8.1.140.0040.00419.52
8.1.130.0070.00017.64
8.1.120.0000.00717.40
8.1.110.0000.00717.36
8.1.100.0050.00217.37
8.1.90.0070.00017.41
8.1.80.0070.00017.37
8.1.70.0070.00017.33
8.1.60.0050.00217.51
8.1.50.0030.00617.34
8.1.40.0060.00317.41
8.1.30.0030.00617.47
8.1.20.0040.00417.51
8.1.10.0000.00817.57
8.1.00.0070.00017.47
8.0.300.0050.00319.90
8.0.290.0000.00716.63
8.0.280.0000.00718.45
8.0.270.0000.00717.25
8.0.260.0060.00017.25
8.0.250.0000.00716.86
8.0.240.0030.00316.99
8.0.230.0000.00816.88
8.0.220.0070.00016.80
8.0.210.0000.00816.80
8.0.200.0030.00316.90
8.0.190.0000.01116.82
8.0.180.0050.00216.86
8.0.170.0000.00816.90
8.0.160.0000.00716.88
8.0.150.0000.00716.78
8.0.140.0020.00516.83
8.0.130.0000.00613.21
8.0.120.0000.00816.78
8.0.110.0040.00416.78
8.0.100.0040.00416.81
8.0.90.0000.00716.80
8.0.80.0090.00616.87
8.0.70.0030.00616.68
8.0.60.0040.00416.71
8.0.50.0080.00016.61
8.0.30.0080.01116.91
8.0.20.0090.01017.40
8.0.10.0040.00416.89
8.0.00.0100.01016.60
7.4.330.0020.00216.73
7.4.320.0030.00316.44
7.4.300.0070.00016.56
7.4.290.0040.00716.55
7.4.280.0030.00616.34
7.4.270.0030.00316.46
7.4.260.0050.00516.52
7.4.250.0030.00516.49
7.4.240.0020.00616.48
7.4.230.0000.00716.47
7.4.220.0080.00816.38
7.4.210.0090.00716.47
7.4.200.0030.00316.35
7.4.160.0030.01416.52
7.4.150.0170.00317.40
7.4.140.0090.00817.86
7.4.130.0200.00316.57
7.4.120.0100.00816.45
7.4.110.0120.01216.42
7.4.100.0030.01316.53
7.4.90.0130.00316.58
7.4.80.0210.00019.39
7.4.70.0170.00616.49
7.4.60.0040.01216.36
7.4.50.0070.00716.49
7.4.40.0100.00616.45
7.4.30.0060.01216.43
7.4.10.0080.00414.92
7.4.00.0090.00314.85
7.3.330.0030.00313.05
7.3.320.0030.00313.23
7.3.310.0030.00316.46
7.3.300.0030.00316.34
7.3.290.0000.00716.36
7.3.280.0070.01216.36
7.3.270.0070.01017.40
7.3.260.0150.00516.34
7.3.240.0100.00716.19
7.3.230.0090.00816.43
7.3.210.0100.01316.32
7.3.200.0030.01319.39
7.3.190.0100.01316.38
7.3.180.0070.01016.32
7.3.170.0120.00416.54
7.3.160.0120.00416.37
7.3.130.0070.00414.95
7.3.120.0040.00815.10
7.3.110.0070.00314.78
7.3.100.0070.00414.87
7.3.90.0040.00714.71
7.3.80.0040.00714.70
7.3.70.0000.01114.78
7.3.60.0000.01214.90
7.3.50.0040.00714.90
7.3.40.0000.01114.87
7.3.30.0030.00714.72
7.3.20.0040.00716.85
7.3.10.0000.01116.77
7.3.00.0000.01116.70
7.2.330.0090.00916.73
7.2.320.0130.01316.77
7.2.310.0120.00416.63
7.2.300.0110.00516.66
7.2.290.0110.00716.79
7.2.260.0110.00015.02
7.2.250.0030.00915.16
7.2.240.0040.00814.88
7.2.230.0080.00415.04
7.2.220.0060.00615.12
7.2.210.0040.00815.08
7.2.200.0060.00614.94
7.2.190.0000.01115.04
7.2.180.0040.00815.04
7.2.170.0040.00815.13
7.2.160.0040.00815.14
7.2.150.0040.00816.93
7.2.140.0040.00816.81
7.2.130.0080.00417.12
7.2.120.0040.00817.02
7.2.110.0040.00816.82
7.2.100.0080.00416.66
7.2.90.0040.00816.80
7.2.80.0060.00617.08
7.2.70.0080.00516.83
7.2.60.0040.00817.09
7.2.50.0080.00417.06
7.2.40.0060.00616.83
7.2.30.0080.00416.82
7.2.20.0000.01216.70
7.2.10.0030.00917.02
7.2.00.0150.00917.96
7.1.330.0100.00015.54
7.1.320.0050.00515.85
7.1.310.0070.00315.74
7.1.300.0040.00715.81
7.1.290.0050.00515.64
7.1.280.0070.00415.51
7.1.270.0040.00715.61
7.1.260.0070.00315.73
7.1.250.0000.01115.88
7.1.240.0050.00515.68
7.1.230.0070.00415.86
7.1.220.0030.00715.79
7.1.210.0100.00015.77
7.1.200.0110.00015.73
7.1.190.0050.00515.56
7.1.180.0070.00315.79
7.1.170.0040.00815.72
7.1.160.0000.01015.78
7.1.150.0050.00515.69
7.1.140.0030.00715.70
7.1.130.0040.00715.82
7.1.120.0040.00715.46
7.1.110.0090.00315.86
7.1.100.0050.00916.93
7.1.90.0060.00515.72
7.1.80.0100.00015.77
7.1.70.0020.00716.33
7.1.60.0060.00817.51
7.1.50.0100.00816.41
7.1.40.0050.00515.59
7.1.30.0030.00815.80
7.1.20.0070.00315.57
7.1.10.0070.00015.60
7.1.00.0050.04319.13
7.0.330.0030.00715.08
7.0.320.0070.00315.09
7.0.310.0100.00015.60
7.0.300.0050.00515.43
7.0.290.0000.01015.57
7.0.280.0030.00715.41
7.0.270.0000.01015.44
7.0.260.0100.00015.22
7.0.250.0030.00715.52
7.0.240.0000.01015.44
7.0.230.0030.00715.43
7.0.220.0030.00815.38
7.0.210.0080.00215.36
7.0.200.0040.00516.02
7.0.190.0060.00315.25
7.0.180.0120.00315.31
7.0.170.0060.00615.30
7.0.160.0000.00915.47
7.0.150.0000.00715.23
7.0.140.0000.01215.29
7.0.130.0030.01015.62
7.0.120.0030.01015.61
7.0.110.0040.00815.34
7.0.100.0070.00715.38
7.0.90.0040.00815.16
7.0.80.0070.00715.33
7.0.70.0080.00415.31
7.0.60.0060.04918.64
7.0.50.0030.03616.61
7.0.40.0030.04516.90
7.0.30.0250.02716.72
7.0.20.0130.04416.79
7.0.10.0050.04816.68
7.0.00.0090.04316.76
5.6.400.0040.00714.04
5.6.390.0100.00014.10
5.6.380.0070.00414.64
5.6.370.0070.00414.51
5.6.360.0040.00814.27
5.6.350.0070.00414.70
5.6.340.0050.00514.04
5.6.330.0050.00514.16
5.6.320.0030.00814.45
5.6.310.0040.00714.64
5.6.300.0040.00414.56
5.6.290.0040.00914.10
5.6.280.0000.03717.58
5.6.270.0130.00014.12
5.6.260.0040.01114.15
5.6.250.0030.01014.30
5.6.240.0030.00714.16
5.6.230.0060.00314.42
5.6.220.0030.01014.18
5.6.210.0030.04117.49
5.6.200.0030.03016.11
5.6.190.0070.03017.35
5.6.180.0250.02817.51
5.6.170.0130.02817.37
5.6.160.0080.04217.37
5.6.150.0050.02716.37
5.6.140.0090.02916.18
5.6.130.0080.02716.23
5.6.120.0070.04717.61
5.6.110.0130.03017.62
5.6.100.0080.04417.70
5.6.90.0030.05017.46
5.6.80.0050.03317.51
5.6.70.0060.00914.30
5.6.60.0140.00014.04
5.6.50.0000.00914.06
5.6.40.0000.01114.48
5.6.30.0030.00614.48
5.6.20.0070.00314.41
5.6.10.0070.00714.35
5.6.00.0040.00414.20
5.5.380.0060.00613.99
5.5.370.0080.00314.32
5.5.360.0050.00514.22
5.5.350.0120.04717.26
5.5.340.0020.04616.14
5.5.330.0020.03317.31
5.5.320.0340.03917.28
5.5.310.0170.04717.37
5.5.300.0100.03816.02
5.5.290.0080.03016.14
5.5.280.0140.03617.62
5.5.270.0010.04917.46
5.5.260.0020.05017.38
5.5.250.0030.04417.49
5.5.240.0130.04017.34
5.5.230.0030.01414.18
5.5.220.0030.00614.11
5.5.210.0070.00314.48
5.5.200.0030.00314.39
5.5.190.0060.00613.89
5.5.180.0030.00913.91
5.5.170.0030.00514.21
5.5.160.0040.00814.00
5.5.150.0060.00314.34
5.5.140.0060.00314.54
5.5.130.0030.00614.33
5.5.120.0030.00914.19
5.5.110.0080.00614.27
5.5.100.0070.00714.36
5.5.90.0070.00314.18
5.5.80.0070.00414.26
5.5.70.0040.01114.13
5.5.60.0090.00314.09
5.5.50.0070.00714.39
5.5.40.0030.00714.00
5.5.30.0090.00314.17
5.5.20.0040.00414.37
5.5.10.0000.01014.36
5.5.00.0000.01113.94

preferences:
55.95 ms | 400 KiB | 5 Q