3v4l.org

run code in 300+ PHP versions simultaneously
<?php $phone = '0312345678'; $phone = '09012345678'; echo strlen($phone), "\n"; $return[] = substr($phone, -4); $return[] = substr($phone, -4, 8); echo $phone, "\n"; var_dump($return);

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)
8.3.60.0090.00918.23
8.3.50.0150.00616.25
8.3.40.0140.00718.71
8.3.30.0110.00418.60
8.3.20.0110.00718.77
8.3.10.0090.00621.48
8.3.00.0030.00620.86
8.2.180.0120.00418.41
8.2.170.0070.01122.96
8.2.160.0140.00019.39
8.2.150.0050.00225.66
8.2.140.0040.00424.66
8.2.130.0170.00021.04
8.2.120.0040.00426.35
8.2.110.0060.00322.29
8.2.100.0040.00717.93
8.2.90.0030.00519.26
8.2.80.0040.00417.97
8.2.70.0090.00017.63
8.2.60.0040.00418.05
8.2.50.0050.00318.10
8.2.40.0030.00522.36
8.2.30.0070.00020.54
8.2.20.0000.00717.62
8.2.10.0000.00717.96
8.2.00.0040.00418.05
8.1.280.0110.00425.92
8.1.270.0040.00423.83
8.1.260.0150.00428.09
8.1.250.0090.00928.09
8.1.240.0090.00023.80
8.1.230.0000.01117.64
8.1.220.0040.00417.74
8.1.210.0040.00418.77
8.1.200.0040.00717.22
8.1.190.0040.00417.23
8.1.180.0050.00318.10
8.1.170.0000.00718.48
8.1.160.0040.00418.93
8.1.150.0040.00418.88
8.1.140.0040.00419.55
8.1.130.0000.00717.55
8.1.120.0070.00017.29
8.1.110.0070.00017.45
8.1.100.0040.00417.39
8.1.90.0040.00417.42
8.1.80.0030.00517.41
8.1.70.0030.00317.37
8.1.60.0000.00817.50
8.1.50.0030.00617.48
8.1.40.0080.00017.48
8.1.30.0000.00817.54
8.1.20.0000.00817.63
8.1.10.0050.00317.31
8.1.00.0040.00417.33
8.0.300.0000.00718.77
8.0.290.0000.00816.75
8.0.280.0070.00018.48
8.0.270.0000.00717.16
8.0.260.0030.00317.15
8.0.250.0040.00416.84
8.0.240.0040.00416.97
8.0.230.0070.00016.85
8.0.220.0000.00816.84
8.0.210.0070.00016.81
8.0.200.0070.00016.91
8.0.190.0000.00716.79
8.0.180.0040.00416.86
8.0.170.0030.00516.74
8.0.160.0000.00716.85
8.0.150.0040.00416.66
8.0.140.0030.00716.83
8.0.130.0000.00613.32
8.0.120.0040.00416.70
8.0.110.0090.00016.85
8.0.100.0070.00016.86
8.0.90.0040.00416.66
8.0.80.0090.00916.77
8.0.70.0040.00416.71
8.0.60.0040.00416.79
8.0.50.0000.00716.63
8.0.30.0170.00316.93
8.0.20.0150.00617.40
8.0.10.0000.00716.96
8.0.00.0070.01216.77
7.4.330.0000.00515.08
7.4.320.0000.00616.53
7.4.300.0030.00316.56
7.4.290.0070.00016.42
7.4.280.0000.00716.42
7.4.270.0030.00316.60
7.4.260.0000.00716.52
7.4.250.0000.00816.48
7.4.240.0000.00716.42
7.4.230.0030.00316.25
7.4.220.0100.00716.45
7.4.210.0100.01016.48
7.4.200.0040.00416.44
7.4.160.0080.00816.57
7.4.150.0140.01117.40
7.4.140.0140.00517.86
7.4.130.0080.00916.48
7.4.120.0100.00616.49
7.4.110.0070.01516.48
7.4.100.0070.01316.64
7.4.90.0110.00616.73
7.4.80.0120.00819.39
7.4.70.0040.01216.53
7.4.60.0100.00716.40
7.4.50.0090.00316.28
7.4.40.0000.01616.56
7.4.30.0140.00316.36
7.4.00.0050.00614.93
7.3.330.0050.00013.22
7.3.320.0050.00013.21
7.3.310.0030.00416.20
7.3.300.0080.00016.21
7.3.290.0100.00716.32
7.3.280.0130.00416.35
7.3.270.0150.00617.40
7.3.260.0190.00616.49
7.3.250.0090.01016.48
7.3.240.0120.00516.47
7.3.230.0090.01416.39
7.3.210.0100.00616.46
7.3.200.0100.00716.45
7.3.190.0080.01216.32
7.3.180.0090.00916.19
7.3.170.0120.00616.20
7.3.160.0060.00916.40
7.3.120.0090.00614.82
7.3.110.0090.00914.74
7.3.100.0070.01014.82
7.3.90.0030.01014.90
7.3.80.0040.01114.88
7.3.70.0060.00614.61
7.3.60.0040.00814.64
7.3.50.0100.01014.77
7.3.40.0100.00614.83
7.3.30.0040.00815.00
7.3.20.0160.00316.70
7.3.10.0100.00316.33
7.3.00.0030.00716.85
7.2.330.0090.00816.68
7.2.320.0070.01016.66
7.2.310.0130.01016.50
7.2.300.0060.01216.61
7.2.290.0090.00916.45
7.2.250.0070.01015.11
7.2.240.0120.00614.99
7.2.230.0040.01114.72
7.2.220.0060.00915.04
7.2.210.0090.00014.98
7.2.200.0070.01014.89
7.2.190.0000.00914.88
7.2.180.0070.01315.06
7.2.170.0090.00614.68
7.2.160.0040.01115.18
7.2.150.0070.00716.85
7.2.140.0060.00916.85
7.2.130.0030.01316.93
7.2.120.0060.00916.86
7.2.110.0080.00416.64
7.2.100.0100.00316.86
7.2.90.0080.00816.62
7.2.80.0040.01416.89
7.2.70.0100.00317.03
7.2.60.0060.01016.51
7.2.50.0100.00316.82
7.2.40.0070.00716.64
7.2.30.0040.01117.05
7.2.20.0070.00416.59
7.2.10.0040.00716.57
7.2.00.0050.00818.17
7.1.330.0060.01015.54
7.1.320.0000.01215.97
7.1.310.0040.01115.71
7.1.300.0060.00615.83
7.1.290.0030.01215.65
7.1.280.0040.00715.60
7.1.270.0060.01015.70
7.1.260.0140.00015.79
7.1.250.0120.00315.83
7.1.240.0060.00615.98
7.1.230.0090.00315.60
7.1.220.0060.00715.74
7.1.210.0100.00015.67
7.1.200.0060.00915.76
7.1.190.0080.00415.46
7.1.180.0060.00915.50
7.1.170.0110.00015.86
7.1.160.0110.00015.49
7.1.150.0070.00715.45
7.1.140.0000.01015.75
7.1.130.0070.00715.53
7.1.120.0100.00315.79
7.1.110.0070.00615.81
7.1.100.0060.00417.07
7.1.90.0070.00715.63
7.1.80.0040.00715.55
7.1.70.0060.00616.41
7.1.60.0110.00718.06
7.1.50.0070.00715.91
7.1.40.0100.00315.98
7.1.30.0000.01115.84
7.1.20.0060.00915.80
7.1.10.0060.00615.54
7.1.00.0050.04319.19
7.0.330.0040.00815.35
7.0.320.0090.00315.50
7.0.310.0080.00015.49
7.0.300.0000.01415.35
7.0.290.0040.00415.08
7.0.280.0070.00415.20
7.0.270.0110.00015.39
7.0.260.0030.01015.30
7.0.250.0060.00615.40
7.0.240.0130.00015.27
7.0.230.0000.01015.53
7.0.220.0110.00415.23
7.0.210.0090.00615.37
7.0.200.0100.00715.28
7.0.190.0000.00915.32
7.0.180.0070.00715.28
7.0.170.0030.01015.57
7.0.160.0030.00615.23
7.0.150.0030.00715.53
7.0.140.0030.00615.45
7.0.130.0140.00015.21
7.0.120.0060.00315.32
7.0.110.0030.01215.42
7.0.100.0060.00615.25
7.0.90.0110.00015.61
7.0.80.0030.01415.38
7.0.70.0070.00415.47
7.0.60.0040.04718.51
7.0.50.0050.02816.65
7.0.40.0270.03316.95
7.0.30.0270.03216.99
7.0.20.0170.04017.10
7.0.10.0250.03417.03
7.0.00.0100.03017.01
5.6.400.0040.01114.60
5.6.390.0100.00314.24
5.6.380.0080.00514.34
5.6.370.0090.00314.30
5.6.360.0000.01714.14
5.6.350.0040.00813.97
5.6.340.0030.01014.33
5.6.330.0070.00714.53
5.6.320.0070.00714.33
5.6.310.0040.00814.66
5.6.300.0060.00314.31
5.6.290.0090.00614.33
5.6.280.0050.04217.56
5.6.270.0060.00614.34
5.6.260.0000.01114.24
5.6.250.0030.00714.01
5.6.240.0090.00614.55
5.6.230.0080.00813.93
5.6.220.0000.01414.27
5.6.210.0070.04417.44
5.6.200.0100.04216.20
5.6.190.0190.04017.48
5.6.180.0060.04217.53
5.6.170.0230.03217.48
5.6.160.0200.03317.26
5.6.150.0230.03517.25
5.6.140.0230.03217.46
5.6.130.0230.03217.21
5.6.120.0080.03617.35
5.6.110.0190.03917.52
5.6.100.0190.02317.26
5.6.90.0230.03517.16
5.6.80.0340.02216.94
5.6.70.0250.04016.97
5.6.60.0220.03217.08
5.6.50.0170.02817.02
5.6.40.0220.03416.79
5.6.30.0150.03216.91
5.6.20.0170.03817.16
5.6.10.0110.03517.11
5.6.00.0070.03716.95
5.5.380.0030.00714.34
5.5.370.0060.00314.07
5.5.360.0070.00714.43
5.5.350.0150.03617.38
5.5.340.0030.02316.13
5.5.330.0220.03217.25
5.5.320.0200.03417.31
5.5.310.0220.03317.24
5.5.300.0250.03117.14
5.5.290.0070.03517.30
5.5.280.0120.03617.20
5.5.270.0150.04017.10
5.5.260.0120.03217.21
5.5.250.0270.02817.11
5.5.240.0280.03316.95
5.5.230.0200.03416.60
5.5.220.0300.02717.07
5.5.210.0270.02716.89
5.5.200.0050.04516.80
5.5.190.0150.02916.96
5.5.180.0220.02216.92
5.5.170.0100.00314.21
5.5.160.0050.03616.78
5.5.150.0030.03616.88
5.5.140.0080.03616.85
5.5.130.0090.04016.88
5.5.120.0070.03716.92
5.5.110.0070.03716.77
5.5.100.0070.03416.82
5.5.90.0120.03516.82
5.5.80.0180.03216.95
5.5.70.0170.03616.79
5.5.60.0290.03216.79
5.5.50.0240.02916.70
5.5.40.0250.02816.53
5.5.30.0150.04016.75
5.5.20.0100.03916.83
5.5.10.0090.03216.85
5.5.00.0100.03216.67

preferences:
64.59 ms | 400 KiB | 5 Q