3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = trim('false'); echo $str . "\n"; if ($str) { echo "option 1: not empty\n"; } if (strlen($str)) { echo "option 2: not empty\n"; } if (!empty($str)) { echo "option 3: not empty\n"; } if ($str !== '') { echo "option 4: not empty\n"; }

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)
8.3.60.0040.01118.18
8.3.50.0100.00722.11
8.3.40.0070.00718.84
8.3.30.0100.00720.17
8.3.20.0060.00320.04
8.3.10.0040.00422.02
8.3.00.0040.00422.40
8.2.180.0140.00716.50
8.2.170.0090.00622.96
8.2.160.0030.01422.17
8.2.150.0040.00424.18
8.2.140.0050.00324.66
8.2.130.0040.00426.16
8.2.120.0040.00420.95
8.2.110.0090.00022.25
8.2.100.0070.00417.91
8.2.90.0040.00417.97
8.2.80.0000.00819.03
8.2.70.0000.00917.36
8.2.60.0100.00617.66
8.2.50.0000.00818.07
8.2.40.0000.00818.22
8.2.30.0070.00417.95
8.2.20.0040.00417.54
8.2.10.0040.00417.68
8.2.00.0030.00517.79
8.1.280.0100.01025.92
8.1.270.0070.00024.66
8.1.260.0070.00026.35
8.1.250.0000.00728.09
8.1.240.0000.00822.16
8.1.230.0000.01020.98
8.1.220.0080.00017.74
8.1.210.0080.00018.77
8.1.200.0080.00017.22
8.1.190.0040.00417.30
8.1.180.0030.00519.01
8.1.170.0000.00818.68
8.1.160.0030.00322.05
8.1.150.0070.00018.65
8.1.140.0070.00017.43
8.1.130.0040.00417.82
8.1.120.0000.00717.40
8.1.110.0000.00817.44
8.1.100.0070.00017.30
8.1.90.0000.00717.51
8.1.80.0040.00417.46
8.1.70.0030.00317.35
8.1.60.0030.00517.62
8.1.50.0020.00517.51
8.1.40.0000.00717.55
8.1.30.0040.00417.60
8.1.20.0000.00817.67
8.1.10.0060.00317.38
8.1.00.0040.00717.37
8.0.300.0040.00420.09
8.0.290.0070.00017.04
8.0.280.0000.00718.45
8.0.270.0000.00717.30
8.0.260.0060.00016.74
8.0.250.0000.00616.92
8.0.240.0040.00416.89
8.0.230.0030.00316.96
8.0.220.0040.00416.78
8.0.210.0030.00316.80
8.0.200.0030.00316.96
8.0.190.0000.00717.00
8.0.180.0070.00016.80
8.0.170.0040.00416.96
8.0.160.0000.00716.93
8.0.150.0050.00316.72
8.0.140.0040.00416.75
8.0.130.0080.00013.38
8.0.120.0040.00416.89
8.0.110.0070.00016.95
8.0.100.0000.00816.77
8.0.90.0000.00716.89
8.0.80.0000.01416.84
8.0.70.0000.00716.93
8.0.60.0040.00416.88
8.0.50.0030.00616.90
8.0.30.0120.01117.06
8.0.20.0120.00717.40
8.0.10.0040.00416.99
8.0.00.0150.00716.70
7.4.330.0000.00515.00
7.4.320.0030.00316.63
7.4.300.0000.00616.50
7.4.290.0070.00016.51
7.4.280.0070.00016.61
7.4.270.0030.00316.49
7.4.260.0030.00316.60
7.4.250.0040.00316.46
7.4.240.0050.00216.46
7.4.230.0070.00016.49
7.4.220.0090.00916.46
7.4.210.0060.01016.58
7.4.200.0020.00516.68
7.4.190.0000.00716.73
7.4.160.0150.00316.46
7.4.150.0130.00317.40
7.4.140.0120.00917.86
7.4.130.0060.01016.45
7.4.120.0090.01116.45
7.4.110.0110.01116.46
7.4.100.0140.00316.65
7.4.90.0070.01016.59
7.4.80.0090.00919.39
7.4.70.0080.00816.39
7.4.60.0140.00716.49
7.4.50.0060.00316.34
7.4.40.0030.01322.77
7.4.30.0100.00716.40
7.4.00.0140.00015.14
7.3.330.0000.00513.14
7.3.320.0040.00413.20
7.3.310.0070.00016.16
7.3.300.0030.00316.19
7.3.290.0100.00316.26
7.3.280.0100.00716.26
7.3.270.0040.01217.40
7.3.260.0150.01316.32
7.3.250.0110.00816.35
7.3.240.0060.01016.23
7.3.230.0090.00616.45
7.3.210.0160.00016.33
7.3.200.0100.01019.39
7.3.190.0060.01016.22
7.3.180.0080.00816.12
7.3.170.0060.01316.44
7.3.160.0060.01516.57
7.3.120.0030.01414.96
7.2.330.0060.01216.71
7.2.320.0060.01216.46
7.2.310.0100.00716.68
7.2.300.0120.00416.74
7.2.290.0090.00616.78
7.2.00.0060.00619.48
7.1.100.0040.01117.69
7.1.70.0040.00417.27
7.1.60.0110.01419.43
7.1.50.0120.00916.86
7.1.00.0030.06722.45
7.0.200.0180.00414.92
7.0.140.0000.07322.12
7.0.60.0100.08019.96
7.0.50.0030.04017.79
7.0.40.0030.07320.21
7.0.30.0300.07720.04
7.0.20.0200.06720.18
7.0.10.0270.07720.12
7.0.00.0070.03720.01
5.6.280.0030.07321.07
5.6.210.0200.06320.52
5.6.200.0030.04018.19
5.6.190.0100.08020.25
5.6.180.0230.08320.41
5.6.170.0230.08020.52
5.6.160.0100.07020.41
5.6.150.0100.07318.22
5.6.140.0100.07718.12
5.6.130.0100.06318.27
5.6.120.0070.04721.11
5.6.110.0100.05321.07
5.6.100.0070.08720.95
5.6.90.0030.04021.09
5.6.80.0000.04320.50
5.6.70.0270.08020.50
5.5.350.0100.06720.32
5.5.340.0100.07317.99
5.5.330.0070.08020.21
5.5.320.0300.06720.34
5.5.310.0170.04020.18
5.5.300.0130.06317.91
5.5.290.0100.07317.95
5.5.280.0030.04320.84
5.5.270.0130.08020.86
5.5.260.0100.05320.87
5.5.250.0070.08020.54
5.5.240.0070.06320.18
5.4.450.0630.05319.45
5.4.440.0270.05319.55
5.4.430.0370.05719.57
5.4.420.0200.05319.24
5.4.410.0130.05719.42
5.4.400.0100.05318.79
5.4.390.0170.04718.59
5.4.380.0130.06018.44
5.4.370.0200.05018.79
5.4.360.0200.04318.63
5.4.350.0130.04611.97
5.4.340.0120.04411.97
5.4.320.0050.05212.45
5.4.310.0010.04212.45
5.4.300.0050.03612.45
5.4.290.0050.03812.45
5.4.280.0040.03712.35
5.4.270.0060.03512.35
5.4.260.0100.03212.35
5.4.250.0060.03612.34
5.4.240.0070.05318.80
5.4.230.0170.05718.73
5.4.220.0170.07018.79
5.4.210.0030.05318.89
5.4.200.0130.05018.77
5.4.190.0000.06718.69
5.4.180.0000.06018.87
5.4.170.0000.08019.01
5.4.160.0130.05318.89
5.4.150.0070.07018.76
5.4.140.0030.07716.23
5.4.130.0170.04016.50
5.4.120.0170.04716.46
5.4.110.0200.03716.34
5.4.100.0070.06016.42
5.4.90.0200.05316.49
5.4.80.0130.06316.21
5.4.70.0070.05016.32
5.4.60.0100.06016.26
5.4.50.0070.05016.21
5.4.40.0100.05716.39
5.4.30.0070.07016.37
5.4.20.0070.06716.39
5.4.10.0070.06316.37
5.4.00.0070.05315.98
5.3.290.0070.03812.80
5.3.280.0170.05714.29
5.3.270.0070.05314.38
5.3.260.0070.05714.63
5.3.250.0070.06314.30
5.3.240.0070.05314.61
5.3.230.0130.05314.61
5.3.220.0070.07314.48
5.3.210.0030.06014.58
5.3.200.0000.06014.35
5.3.190.0030.05014.56
5.3.180.0130.06714.48
5.3.170.0170.04014.40
5.3.160.0130.06014.57
5.3.150.0070.06014.45
5.3.140.0130.04714.42
5.3.130.0030.05714.25
5.3.120.0070.06714.55
5.3.110.0100.06714.32
5.3.100.0070.07014.08
5.3.90.0070.06014.11
5.3.80.0030.05313.90
5.3.70.0070.06014.06
5.3.60.0100.05714.15
5.3.50.0030.06014.04
5.3.40.0070.05013.71
5.3.30.0000.05714.06
5.3.20.0130.05313.46
5.3.10.0070.05713.64
5.3.00.0100.06313.65
5.2.170.0070.04011.14
5.2.160.0070.04011.13
5.2.150.0030.04311.14
5.2.140.0030.05311.23
5.2.130.0130.04311.01
5.2.120.0100.04710.86
5.2.110.0070.05311.11
5.2.100.0000.05711.00
5.2.90.0030.03711.11
5.2.80.0030.04711.09
5.2.70.0000.06311.00
5.2.60.0030.05010.98
5.2.50.0030.05311.03
5.2.40.0100.04310.91
5.2.30.0130.03710.73
5.2.20.0030.05010.84
5.2.10.0070.03710.79
5.2.00.0070.03710.55
5.1.60.0030.0439.93
5.1.50.0030.0379.76
5.1.40.0030.03710.21
5.1.30.0000.04010.50
5.1.20.0030.03710.52
5.1.10.0030.0509.98
5.1.00.0070.03710.02
5.0.50.0030.0278.56
5.0.40.0000.0308.43
5.0.30.0030.0578.25
5.0.20.0030.0278.15
5.0.10.0000.0378.35
5.0.00.0030.0578.20
4.4.90.0000.0306.89
4.4.80.0000.0236.89
4.4.70.0100.0176.89
4.4.60.0070.0276.89
4.4.50.0000.0236.89
4.4.40.0000.0376.89
4.4.30.0000.0236.89
4.4.20.0000.0306.89
4.4.10.0070.0276.89
4.4.00.0000.0376.89
4.3.110.0000.0236.89
4.3.100.0070.0176.89
4.3.90.0030.0276.89
4.3.80.0000.0406.89
4.3.70.0030.0276.89
4.3.60.0070.0236.89
4.3.50.0000.0236.89
4.3.40.0000.0376.89
4.3.30.0030.0306.89
4.3.20.0030.0236.89
4.3.10.0070.0176.89
4.3.00.0100.0336.71

preferences:
42.21 ms | 401 KiB | 5 Q