3v4l.org

run code in 300+ PHP versions simultaneously
<?php $var = "12345"; $time_start = microtime(true); echo $var[0] . "-" . substr($var,1) . "\n"; $time_end = microtime(true); echo "\nExecution Time: " . $time_end - $time_start . "\n"; $time_start2 = microtime(true); echo str_replace($var[0], $var[0].'-', $var) . "\n"; $time_end2 = microtime(true); echo "\nExecution Time: " . $time_end2 - $time_start2;

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)
7.4.10.0060.01314.76
7.4.00.0070.01315.07
7.3.130.0060.00914.96
7.3.120.0070.01114.94
7.3.110.0130.00314.88
7.3.100.0030.00514.79
7.3.90.0090.00614.89
7.3.80.0030.00914.70
7.3.70.0060.00715.01
7.3.60.0070.01014.93
7.3.50.0090.00615.02
7.3.40.0000.01214.72
7.3.30.0070.01014.72
7.3.20.0030.00916.37
7.3.10.0090.00916.48
7.3.00.0000.01216.66
7.2.260.0070.00715.31
7.2.250.0040.01514.76
7.2.240.0070.00715.24
7.2.230.0120.00315.08
7.2.220.0030.01315.25
7.2.210.0030.01214.68
7.2.200.0100.00715.05
7.2.190.0000.01615.12
7.2.180.0000.01615.13
7.2.170.0080.00314.96
7.2.160.0120.00615.11
7.2.150.0060.00916.68
7.2.140.0100.00316.99
7.2.130.0000.01516.76
7.2.120.0030.01416.99
7.2.110.0110.00817.11
7.2.100.0070.00716.84
7.2.90.0070.00717.02
7.2.80.0040.01116.92
7.2.70.0030.00816.62
7.2.60.0000.01517.08
7.2.50.0040.01116.71
7.2.40.0000.01117.10
7.2.30.0070.00717.13
7.2.20.0030.01016.89
7.2.10.0030.00617.05
7.2.00.0050.01118.23
7.1.330.0060.00616.08
7.1.320.0090.00015.89
7.1.310.0030.00915.92
7.1.300.0100.00715.84
7.1.290.0000.01115.76
7.1.280.0000.01215.73
7.1.270.0070.00715.91
7.1.260.0070.00715.63
7.1.250.0120.00315.93
7.1.240.0040.01215.63
7.1.230.0060.00615.71
7.1.220.0030.01015.64
7.1.210.0090.00615.52
7.1.200.0090.00615.86
7.1.190.0000.01115.76
7.1.180.0030.00715.78
7.1.170.0000.01415.92
7.1.160.0080.00015.90
7.1.150.0080.00415.57
7.1.140.0070.00715.63
7.1.130.0040.00715.65
7.1.120.0130.00015.76
7.1.110.0040.00815.88
7.1.100.0100.00315.88
7.1.90.0060.00915.52
7.1.80.0040.00415.56
7.1.70.0090.00316.11
7.1.60.0040.00916.61
7.1.50.0040.01016.33
7.1.40.0060.00615.86
7.1.30.0090.00615.78
7.1.20.0060.00615.92
7.1.10.0090.00615.93
7.1.00.0020.02919.05
7.0.330.0040.00815.26
7.0.320.0040.01115.48
7.0.310.0070.00715.53
7.0.300.0030.01015.41
7.0.290.0060.00915.44
7.0.280.0070.00715.38
7.0.270.0000.01315.49
7.0.260.0110.00415.50
7.0.250.0000.01015.44
7.0.240.0000.01315.49
7.0.230.0000.01215.14
7.0.220.0070.00315.54
7.0.210.0030.01015.48
7.0.200.0020.01216.12
7.0.190.0060.00615.34
7.0.180.0070.00315.34
7.0.170.0030.01015.44
7.0.160.0100.00015.23
7.0.150.0090.00015.39
7.0.140.0030.03718.76
7.0.130.0000.01815.56
7.0.120.0080.03918.64
7.0.110.0060.03618.52
7.0.100.0130.03518.83
7.0.90.0030.05018.66
7.0.80.0070.02218.64
7.0.70.0080.04318.57
7.0.60.0050.04018.76
7.0.50.0020.04418.86
7.0.40.0030.03316.66
7.0.30.0040.03316.81
7.0.20.0020.03716.79
7.0.10.0060.04116.70
7.0.00.0100.02316.63
5.6.400.0120.00014.32
5.6.390.0100.00714.51
5.6.380.0150.00014.03
5.6.370.0070.00714.45
5.6.360.0030.00614.50
5.6.350.0100.00314.77
5.6.340.0100.00314.63
5.6.330.0030.01014.34
5.6.320.0000.01014.43
5.6.310.0070.01114.14
5.6.300.0090.00614.63
5.6.290.0040.00814.47
5.6.280.0080.03817.68
5.6.270.0080.04117.55
5.6.260.0050.02817.70
5.6.250.0060.02817.65
5.6.240.0030.04017.68
5.6.230.0020.03017.70
5.6.220.0040.04617.63
5.6.210.0060.04017.58
5.6.200.0050.04017.65
5.6.190.0080.04317.70
5.6.180.0050.04317.72
5.6.170.0100.04017.73
5.6.160.0100.03217.43
5.6.150.0030.04917.71
5.6.140.0090.02717.54
5.6.130.0020.05017.70
5.6.120.0110.02817.55
5.6.110.0060.03817.67
5.6.100.0050.04517.61
5.6.90.0000.04817.70
5.6.80.0100.03717.21
5.6.70.0100.03717.38
5.6.60.0070.03717.14
5.6.50.0080.03717.27
5.6.40.0060.04317.15
5.6.30.0080.03817.40
5.6.20.0080.02517.31
5.6.10.0050.03517.37
5.6.00.0100.03817.07
5.5.380.0020.02815.94
5.5.370.0020.04816.10
5.5.360.0060.04315.72
5.5.350.0030.04715.86
5.5.340.0050.02116.06
5.5.330.0030.03316.34
5.5.320.0010.04816.23
5.5.310.0020.04316.29
5.5.300.0050.03716.08
5.5.290.0030.03116.26
5.5.280.0020.04616.20
5.5.270.0070.02515.98
5.5.260.0020.04616.17
5.5.250.0020.04315.98
5.5.240.0110.03015.72
5.5.230.0030.04315.78
5.5.220.0050.02715.85
5.5.210.0050.03215.93
5.5.200.0030.02215.80
5.5.190.0020.02615.84
5.5.180.0050.04315.98
5.5.170.0030.01014.33
5.5.160.0040.03915.85
5.5.150.0050.03215.55
5.5.140.0080.02215.84
5.5.130.0000.02715.77
5.5.120.0020.02415.89
5.5.110.0020.02715.71
5.5.100.0020.02915.92
5.5.90.0030.02315.63
5.5.80.0050.02115.75
5.5.70.0020.02415.81
5.5.60.0020.03015.82
5.5.50.0080.02615.85
5.5.40.0050.02015.76
5.5.30.0080.02015.76
5.5.20.0030.02515.87
5.5.10.0020.03215.56
5.5.00.0030.02315.70
5.4.450.0080.03715.19
5.4.440.0060.04315.13
5.4.430.0050.04415.33
5.4.420.0020.02915.13
5.4.410.0050.04315.10
5.4.400.0100.03315.00
5.4.390.0020.04014.87
5.4.380.0080.03114.94
5.4.370.0030.04714.94
5.4.360.0030.04414.98
5.4.350.0080.03015.10
5.4.340.0080.03614.83
5.4.330.0090.00310.92
5.4.320.0020.02014.95
5.4.310.0040.03515.01
5.4.300.0040.01715.04
5.4.290.0020.02215.04
5.4.280.0030.02014.91
5.4.270.0030.02115.03
5.4.260.0030.02315.05
5.4.250.0030.02214.93
5.4.240.0050.02014.89
5.4.230.0020.02514.92
5.4.220.0030.02014.96
5.4.210.0020.02415.04
5.4.200.0020.02114.91
5.4.190.0030.02314.96
5.4.180.0010.03115.06
5.4.170.0020.02214.99
5.4.160.0020.02314.93
5.4.150.0030.02014.92
5.4.140.0030.01813.74
5.4.130.0040.02313.63
5.4.120.0030.02113.85
5.4.110.0030.01613.69
5.4.100.0050.01713.70
5.4.90.0040.01513.46
5.4.80.0020.02013.56
5.4.70.0080.01713.64
5.4.60.0040.01613.53
5.4.50.0050.01813.58
5.4.40.0030.01513.63
5.4.30.0030.02213.75
5.4.20.0030.02113.56
5.4.10.0040.01713.71
5.4.00.0000.02213.30
5.3.290.0050.02412.64
5.3.280.0020.02012.42
5.3.270.0030.02112.47
5.3.260.0030.02212.51
5.3.250.0020.02212.42
5.3.240.0050.02012.46
5.3.230.0000.01812.40
5.3.220.0020.02212.33
5.3.210.0000.01912.41
5.3.200.0030.01712.37
5.3.190.0020.01612.48
5.3.180.0030.02012.52
5.3.170.0030.01812.38
5.3.160.0040.02012.52
5.3.150.0010.02412.55
5.3.140.0020.02912.37
5.3.130.0020.02312.43
5.3.120.0010.02112.54
5.3.110.0030.02012.48
5.3.100.0050.02012.16
5.3.90.0050.02712.21
5.3.80.0050.01812.19
5.3.70.0050.01612.20
5.3.60.0000.02212.14
5.3.50.0000.02412.04
5.3.40.0020.03812.20
5.3.30.0020.03912.29
5.3.20.0020.02211.98
5.3.10.0020.03311.87
5.3.00.0030.04011.91
5.2.170.0000.04311.08
5.2.160.0030.04011.16
5.2.150.0000.06311.07
5.2.140.0070.06311.21
5.2.130.0000.04010.88
5.2.120.0100.03011.03
5.2.110.0030.03311.05
5.2.100.0000.05711.05
5.2.90.0000.05310.99
5.2.80.0070.04711.00
5.2.70.0000.05710.88
5.2.60.0000.05011.04
5.2.50.0100.03710.92
5.2.40.0030.05311.07
5.2.30.0000.06311.04
5.2.20.0000.06310.97
5.2.10.0000.04010.86
5.2.00.0030.05310.68
5.1.60.0030.0539.96
5.1.50.0000.0509.97
5.1.40.0030.0509.80
5.1.30.0030.06010.41
5.1.20.0030.05710.20
5.1.10.0030.03310.07
5.1.00.0030.03310.06
5.0.50.0030.0409.07
5.0.40.0000.0479.07
5.0.30.0000.0339.07
5.0.20.0030.0439.07
5.0.10.0000.0439.07
5.0.00.0000.0379.07
4.4.90.0030.0339.07
4.4.80.0100.0109.07
4.4.70.0030.0309.07
4.4.60.0030.0279.07
4.4.50.0000.0339.07
4.4.40.0030.0509.07
4.4.30.0000.0339.07
4.4.20.0070.0139.07
4.4.10.0000.0339.07
4.4.00.0030.0439.07
4.3.110.0000.0339.07
4.3.100.0030.0279.07
4.3.90.0000.0339.07
4.3.80.0030.0479.07
4.3.70.0030.0139.07
4.3.60.0000.0239.07
4.3.50.0000.0339.07
4.3.40.0030.0439.07
4.3.30.0030.0279.07
4.3.20.0030.0139.07
4.3.10.0000.0309.07
4.3.00.0000.0179.07

preferences:
44.54 ms | 401 KiB | 5 Q