3v4l.org

run code in 300+ PHP versions simultaneously
<?php $test = function() { $p = 'abcde'; $c = 'abc'; var_export(substr($p, 0, strlen($c)) == $c, true); }; $s = microtime(1); for ($i =0; $i < 100; $i++) { $test(); } echo printf('%2f', microtime(1) - $s);

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)
7.4.10.0040.01215.10
7.4.00.0040.01415.16
7.3.130.0090.00614.84
7.3.120.0070.01014.55
7.3.110.0060.01214.52
7.3.100.0140.00014.95
7.3.90.0080.00314.80
7.3.80.0000.01514.93
7.3.70.0040.00814.63
7.3.60.0090.00314.67
7.3.50.0140.00014.55
7.3.40.0030.00714.66
7.3.30.0000.01714.75
7.3.20.0090.00316.73
7.3.10.0150.00716.57
7.3.00.0110.00916.56
7.2.260.0110.00614.97
7.2.250.0030.01014.73
7.2.240.0040.01115.29
7.2.230.0060.00615.14
7.2.220.0070.00715.27
7.2.210.0070.00714.97
7.2.200.0060.00614.74
7.2.190.0070.01115.19
7.2.180.0030.01015.02
7.2.170.0030.01215.17
7.2.160.0030.00614.97
7.2.150.0060.01017.03
7.2.140.0080.00816.75
7.2.130.0120.01016.78
7.2.120.0110.00816.85
7.2.110.0140.00616.79
7.2.100.0120.00816.89
7.2.90.0160.00616.82
7.2.80.0150.00616.90
7.2.70.0140.00816.87
7.2.60.0170.00516.77
7.2.50.0110.01016.89
7.2.40.0150.00516.76
7.2.30.0150.00716.93
7.2.20.0120.01016.59
7.2.10.0170.00416.75
7.2.00.0090.01017.27
7.1.330.0040.01115.77
7.1.320.0070.00715.77
7.1.310.0120.00016.04
7.1.300.0040.01115.80
7.1.290.0040.01116.02
7.1.280.0040.00915.59
7.1.270.0040.00715.95
7.1.260.0030.01015.84
7.1.250.0080.01015.70
7.1.240.0090.00315.79
7.1.230.0080.00715.48
7.1.220.0090.00815.77
7.1.210.0110.00515.51
7.1.200.0130.00115.44
7.1.190.0080.00615.67
7.1.180.0070.00915.67
7.1.170.0070.00715.63
7.1.160.0060.01115.77
7.1.150.0080.00715.43
7.1.140.0110.00515.65
7.1.130.0030.01015.77
7.1.120.0080.01215.76
7.1.110.0070.00915.82
7.1.100.0050.00815.74
7.1.90.0020.01015.85
7.1.80.0100.00915.84
7.1.70.0090.00516.27
7.1.60.0060.01116.94
7.1.50.0090.00716.08
7.1.40.0110.00215.81
7.1.30.0110.00615.80
7.1.20.0100.00415.58
7.1.10.0090.00715.50
7.1.00.0070.02017.95
7.0.330.0060.01115.36
7.0.320.0080.00715.41
7.0.310.0070.00815.19
7.0.300.0100.00315.33
7.0.290.0110.00515.38
7.0.280.0130.00615.47
7.0.270.0110.00915.42
7.0.260.0090.01315.45
7.0.250.0090.00715.56
7.0.240.0120.00615.31
7.0.230.0150.00215.38
7.0.220.0170.00015.41
7.0.210.0110.00215.38
7.0.200.0140.00615.62
7.0.190.0080.01015.37
7.0.180.0090.00615.46
7.0.170.0110.00515.28
7.0.160.0120.00515.40
7.0.150.0110.00715.36
7.0.140.0070.02917.53
7.0.130.0110.00615.27
7.0.120.0080.01917.67
7.0.110.0140.00815.43
7.0.100.0050.01315.31
7.0.90.0150.00615.18
7.0.80.0110.00515.60
7.0.70.0100.00515.42
7.0.60.0090.01916.86
7.0.50.0100.02416.37
7.0.40.0050.03715.72
7.0.30.0120.03415.70
7.0.20.0120.02615.65
7.0.10.0110.03515.73
7.0.00.0030.02115.68
5.6.400.0080.00814.39
5.6.390.0130.00314.27
5.6.380.0060.00914.27
5.6.370.0070.00914.45
5.6.360.0060.00914.45
5.6.350.0080.00714.38
5.6.340.0060.00814.48
5.6.330.0050.01214.31
5.6.320.0080.00714.41
5.6.310.0060.00614.49
5.6.300.0090.00814.28
5.6.290.0060.00614.10
5.6.280.0050.03216.43
5.6.270.0090.00314.38
5.6.260.0140.00214.06
5.6.250.0070.00514.28
5.6.240.0070.00914.07
5.6.230.0100.00514.26
5.6.220.0050.00814.18
5.6.210.0030.03516.30
5.6.200.0060.03315.50
5.6.190.0080.01816.30
5.6.180.0090.02216.33
5.6.170.0090.02116.35
5.6.160.0080.03116.37
5.6.150.0040.03115.60
5.6.140.0070.02715.56
5.6.130.0070.01915.57
5.6.120.0100.02916.38
5.6.110.0080.03016.48
5.6.100.0040.02416.40
5.6.90.0080.03216.61
5.6.80.0080.02516.26
5.6.70.0060.00514.21
5.6.60.0070.00513.97
5.6.50.0020.01214.26
5.6.40.0040.01114.22
5.6.30.0050.01214.21
5.6.20.0060.00713.95
5.6.10.0030.00914.05
5.6.00.0060.00914.15
5.5.380.0090.00412.52
5.5.370.0050.01012.87
5.5.360.0110.00612.66
5.5.350.0100.02915.27
5.5.340.0070.02014.38
5.5.330.0040.01915.30
5.5.320.0080.03015.26
5.5.310.0130.02915.31
5.5.300.0060.02214.51
5.5.290.0050.03014.54
5.5.280.0070.02915.66
5.5.270.0070.02015.43
5.5.260.0050.02115.37
5.5.250.0060.01815.38
5.5.240.0090.02615.25
5.5.230.0080.00512.68
5.5.220.0090.00612.78
5.5.210.0060.00812.73
5.5.200.0110.00312.51
5.5.190.0080.00112.75
5.5.180.0080.00312.78
5.5.170.0060.00612.56
5.5.160.0060.00812.73
5.5.150.0080.00712.86
5.5.140.0090.00512.76
5.5.130.0060.00612.65
5.5.120.0080.00512.81
5.5.110.0080.00612.62
5.5.100.0050.00912.58
5.5.90.0090.00412.62
5.5.80.0080.00612.60
5.5.70.0080.00812.71
5.5.60.0030.00812.56
5.5.50.0030.00612.67
5.5.40.0080.00512.71
5.5.30.0080.00312.52
5.5.20.0070.00412.67
5.5.10.0060.00412.39
5.5.00.0050.00512.44
5.4.450.0050.01914.36
5.4.440.0070.02814.44
5.4.430.0080.02614.34
5.4.420.0060.01814.50
5.4.410.0100.02614.40
5.4.400.0060.02114.29
5.4.390.0040.03014.33
5.4.380.0020.02514.15
5.4.370.0070.02514.34
5.4.360.0050.01714.11
5.4.350.0090.02514.32
5.4.340.0060.01514.24
5.4.330.0060.00511.92
5.4.320.0040.02814.49
5.4.310.0000.02214.34
5.4.300.0040.03014.37
5.4.290.0080.02814.23
5.4.280.0080.01514.37
5.4.270.0020.02014.37
5.4.260.0070.02814.42
5.4.250.0070.02714.34
5.4.240.0040.02214.50
5.4.230.0080.02414.46
5.4.220.0030.02114.45
5.4.210.0030.01714.21
5.4.200.0030.01714.31
5.4.190.0030.01914.35
5.4.180.0060.01714.21
5.4.170.0080.01114.38
5.4.160.0010.01814.38
5.4.150.0050.01514.45
5.4.140.0030.02013.43
5.4.130.0030.01513.50
5.4.120.0030.01713.56
5.4.110.0010.01613.41
5.4.100.0070.01213.39
5.4.90.0020.01713.43
5.4.80.0030.01813.39
5.4.70.0030.01613.44
5.4.60.0040.01513.42
5.4.50.0050.01513.49
5.4.40.0050.01513.44
5.4.30.0060.01413.39
5.4.20.0030.01313.42
5.4.10.0030.01613.43
5.4.00.0050.01713.33
5.3.290.0020.02312.82
5.3.280.0060.02012.65
5.3.270.0030.01512.65
5.3.260.0020.01612.62
5.3.250.0030.01612.78
5.3.240.0030.01512.72
5.3.230.0040.01512.79
5.3.220.0020.01612.59
5.3.210.0010.01912.70
5.3.200.0020.01712.71
5.3.190.0040.01612.73
5.3.180.0040.01712.74
5.3.170.0040.01412.65
5.3.160.0060.01612.75
5.3.150.0040.01612.72
5.3.140.0030.01712.60
5.3.130.0030.01712.68
5.3.120.0040.01512.74
5.3.110.0010.02012.67
5.3.100.0030.01612.47
5.3.90.0060.01412.61
5.3.80.0030.01812.49
5.3.70.0060.01512.39
5.3.60.0030.01612.50
5.3.50.0020.01912.43
5.3.40.0060.01412.51
5.3.30.0020.01812.45
5.3.20.0040.01412.35
5.3.10.0040.01412.33
5.3.00.0070.01412.33
5.2.170.0040.01810.18
5.2.160.0030.01710.19
5.2.150.0000.02010.18
5.2.140.0020.01710.00
5.2.130.0020.01710.18
5.2.120.0050.01810.21
5.2.110.0080.0139.98
5.2.100.0040.02210.16
5.2.90.0020.01910.15
5.2.80.0030.02810.11
5.2.70.0110.02010.12
5.2.60.0070.03310.07
5.2.50.0000.03010.02
5.2.40.0020.02210.05
5.2.30.0060.03110.00
5.2.20.0050.02210.02
5.2.10.0020.0299.95
5.2.00.0030.0359.72
5.1.60.0020.0209.17
5.1.50.0020.0249.11
5.1.40.0030.0189.08
5.1.30.0060.0169.45
5.1.20.0000.0189.30
5.1.10.0050.0129.15
5.1.00.0050.0299.22
5.0.50.0040.0258.36
5.0.40.0060.0098.37
5.0.30.0040.0198.27
5.0.20.0040.0138.21
5.0.10.0020.0108.25
5.0.00.0040.0168.25
4.4.90.0050.0088.18
4.4.80.0000.0118.18
4.4.70.0020.0108.18
4.4.60.0050.0168.18
4.4.50.0010.0118.18
4.4.40.0030.0148.18
4.4.30.0010.0118.18
4.4.20.0030.0088.18
4.4.10.0060.0158.18
4.4.00.0050.0128.18
4.3.110.0040.0208.18
4.3.100.0020.0138.18
4.3.90.0020.0118.18
4.3.80.0040.0168.18
4.3.70.0020.0138.18
4.3.60.0050.0188.18
4.3.50.0030.0098.18
4.3.40.0090.0138.18
4.3.30.0020.0128.18
4.3.20.0020.0118.18
4.3.10.0010.0218.18
4.3.00.0020.0168.18

preferences:
40.4 ms | 401 KiB | 5 Q