3v4l.org

run code in 300+ PHP versions simultaneously
<?php $my_key = uniqid("\x00"); if (preg_match('/a-zA-Z/', $my_key)) { echo "key has alpha chars\n"; } $var[$my_key] = TRUE; foreach($var as $key => $val) { if ($key === $my_key) { echo 'You got it right'; } else { echo 'You got it wrong'; } }

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)
7.4.00.0080.01114.94
7.3.120.0090.01214.98
7.3.110.0070.01114.88
7.3.100.0040.01114.88
7.3.90.0080.00815.29
7.3.80.0100.00314.63
7.3.70.0000.01314.92
7.3.60.0070.00715.15
7.3.50.0110.00714.86
7.3.40.0120.00015.09
7.3.30.0060.00914.98
7.3.20.0000.01216.99
7.3.10.0100.00716.87
7.3.00.0120.00516.64
7.2.250.0180.00415.25
7.2.240.0040.01515.27
7.2.230.0070.00715.08
7.2.220.0100.00715.29
7.2.210.0060.01015.22
7.2.200.0030.01415.28
7.2.190.0060.00315.30
7.2.180.0110.00315.04
7.2.170.0090.00615.25
7.2.130.0110.01116.98
7.2.120.0100.00716.84
7.2.110.0110.00917.07
7.2.100.0090.00616.86
7.2.90.0090.00617.13
7.2.80.0070.01116.92
7.2.70.0110.00917.08
7.2.60.0050.01417.09
7.2.50.0100.00717.16
7.2.40.0100.01017.06
7.2.30.0070.01117.27
7.2.20.0040.01417.06
7.2.10.0100.00717.13
7.2.00.0100.01016.87
7.1.330.0060.00615.86
7.1.320.0140.00016.02
7.1.310.0090.00615.72
7.1.300.0120.00315.75
7.1.290.0040.01116.08
7.1.280.0060.00915.78
7.1.270.0030.00715.86
7.1.260.0060.00316.17
7.1.250.0140.00615.98
7.1.240.0090.01215.57
7.1.230.0090.00915.87
7.1.220.0130.00616.01
7.1.210.0070.01116.05
7.1.200.0110.00715.80
7.1.190.0100.00315.89
7.1.180.0110.00615.95
7.1.170.0170.00015.93
7.1.160.0120.00416.05
7.1.150.0070.00716.00
7.1.140.0100.00715.72
7.1.130.0070.01415.93
7.1.120.0100.01315.86
7.1.110.0130.00315.83
7.1.100.0070.01015.94
7.1.90.0070.00716.18
7.1.80.0030.01215.94
7.1.70.0090.00416.77
7.1.60.0120.00717.69
7.1.50.0070.01216.63
7.1.40.0090.00915.83
7.1.30.0100.01015.96
7.1.20.0150.00015.80
7.1.10.0100.00715.91
7.1.00.0050.04319.23
7.0.330.0100.01015.25
7.0.320.0100.00315.54
7.0.310.0080.01115.42
7.0.300.0080.00815.55
7.0.290.0130.00315.75
7.0.280.0130.00315.37
7.0.270.0110.00715.65
7.0.260.0160.00315.44
7.0.250.0140.00415.26
7.0.240.0090.00615.74
7.0.230.0070.00415.61
7.0.220.0090.00615.74
7.0.210.0090.00615.30
7.0.200.0050.00816.24
7.0.190.0130.00415.52
7.0.180.0140.00915.39
7.0.170.0140.00715.47
7.0.160.0090.00615.80
7.0.150.0110.00315.50
7.0.140.0030.04018.77
7.0.130.0040.01115.72
7.0.120.0100.00315.28
7.0.110.0080.00815.76
7.0.100.0030.00715.60
7.0.90.0070.01115.38
7.0.80.0100.00715.61
7.0.70.0040.00815.51
7.0.60.0060.04517.77
7.0.50.0130.03716.64
7.0.40.0070.04516.86
7.0.30.0150.02316.86
7.0.20.0180.04216.85
7.0.10.0050.04216.84
7.0.00.0070.03016.90
5.6.380.0130.00314.46
5.6.370.0040.00814.84
5.6.360.0030.01214.39
5.6.350.0030.01414.46
5.6.340.0040.01514.61
5.6.330.0030.01314.25
5.6.320.0000.01714.10
5.6.310.0070.00414.79
5.6.300.0040.00714.29
5.6.290.0120.00414.38
5.6.280.0060.03817.78
5.6.270.0060.00614.20
5.6.260.0030.00714.30
5.6.250.0000.00814.39
5.6.240.0070.00714.45
5.6.230.0090.00614.74
5.6.220.0030.00914.31
5.6.210.0080.04517.56
5.6.200.0050.04016.33
5.6.190.0020.05117.49
5.6.180.0170.03717.62
5.6.170.0170.03317.38
5.6.160.0030.02717.28
5.6.150.0050.04416.12
5.6.140.0050.02316.36
5.6.130.0060.02316.16
5.6.120.0060.03817.69
5.6.110.0090.04317.76
5.6.100.0110.03617.59
5.6.90.0030.03417.58
5.6.80.0070.02617.22
5.6.70.0070.01014.06
5.6.60.0050.00813.90
5.6.50.0030.00914.01
5.6.40.0060.00314.27
5.6.30.0050.00813.85
5.6.20.0000.01014.16
5.6.10.0060.01114.13
5.6.00.0140.00714.52
5.5.380.0040.00310.85
5.5.370.0100.00310.75
5.5.360.0070.00311.09
5.5.350.0150.03315.75
5.5.340.0060.02214.50
5.5.330.0070.03615.75
5.5.320.0220.03515.81
5.5.310.0130.04915.75
5.5.300.0090.03914.62
5.5.290.0070.04114.70
5.5.280.0010.02915.90
5.5.270.0030.02716.01
5.5.260.0100.03216.01
5.5.250.0030.04615.88
5.5.240.0070.04015.70
5.5.230.0080.00310.62
5.5.220.0000.01110.67
5.5.210.0040.00910.88
5.5.200.0000.01010.92
5.5.190.0080.00410.79
5.5.180.0000.01011.26
5.5.170.0000.01110.99
5.5.160.0110.00411.27
5.5.150.0080.00711.16
5.5.140.0090.00611.23
5.5.130.0030.00711.02
5.5.120.0070.00410.85
5.5.110.0100.00310.87
5.5.100.0080.00011.08
5.5.90.0040.00411.00
5.5.80.0040.00410.67
5.5.70.0050.00510.87
5.5.60.0040.00410.95
5.5.50.0000.00810.95
5.5.40.0070.00310.92
5.5.30.0070.00011.13
5.5.20.0030.01010.71
5.5.10.0090.00410.81
5.5.00.0000.00910.70
5.4.450.0450.02215.38
5.4.440.0310.02615.12
5.4.430.0160.02315.03
5.4.420.0280.02215.20
5.4.410.0190.02215.28
5.4.400.0200.02514.90
5.4.390.0120.02515.11
5.4.380.0220.02214.72
5.4.370.0150.03214.81
5.4.360.0230.03214.86
5.4.350.0200.03714.91
5.4.340.0150.03014.88
5.4.330.0040.00810.86
5.4.320.0100.02511.72
5.4.310.0070.03011.79
5.4.300.0060.02511.80
5.4.290.0080.02611.79
5.4.280.0090.02611.53
5.4.270.0040.02911.40
5.4.260.0070.02111.68
5.4.250.0070.02011.65
5.4.240.0090.02511.64
5.4.230.0100.02511.58
5.4.220.0060.02811.67
5.4.210.0070.02711.49
5.4.200.0090.02611.67
5.4.190.0060.02011.52
5.4.180.0040.02911.77
5.4.170.0080.01811.56
5.4.160.0080.02111.76
5.4.150.0060.02011.65
5.4.140.0030.02311.41
5.4.130.0040.02411.46
5.4.120.0060.01811.55
5.4.110.0070.02111.52
5.4.100.0020.02211.54
5.4.90.0060.01911.51
5.4.80.0080.02511.41
5.4.70.0070.02511.41
5.4.60.0070.02311.45
5.4.50.0030.02211.45
5.4.40.0050.02811.60
5.4.30.0050.02011.37
5.4.20.0070.02211.46
5.4.10.0050.01911.46
5.4.00.0050.02711.11
5.3.290.0070.02811.71
5.3.280.0040.03011.62
5.3.270.0060.02611.63
5.3.260.0040.02211.71
5.3.250.0040.02011.66
5.3.240.0040.02111.63
5.3.230.0090.02611.60
5.3.220.0080.02811.57
5.3.210.0050.02911.64
5.3.200.0100.03611.60
5.3.190.0060.02411.56
5.3.180.0100.03511.60
5.3.170.0090.02511.56
5.3.160.0060.02611.65
5.3.150.0070.02911.63
5.3.140.0110.02611.67
5.3.130.0070.02811.65
5.3.120.0070.02711.55
5.3.110.0060.02811.55
5.3.100.0030.02911.25
5.3.90.0080.02611.35
5.3.80.0070.02211.29
5.3.70.0070.02511.11
5.3.60.0040.02111.25
5.3.50.0060.02611.19
5.3.40.0070.02511.08
5.3.30.0060.03211.26
5.3.20.0040.02911.06
5.3.10.0060.03110.97
5.3.00.0070.02510.89
5.2.170.0080.0189.39
5.2.160.0060.0219.30
5.2.150.0060.0219.30
5.2.140.0040.0209.32
5.2.130.0060.0219.28
5.2.120.0060.0179.30
5.2.110.0050.0179.29
5.2.100.0020.0199.28
5.2.90.0050.0189.29
5.2.80.0030.0189.28
5.2.70.0040.0209.31
5.2.60.0060.0219.26
5.2.50.0050.0219.24
5.2.40.0020.0209.23
5.2.30.0070.0209.22
5.2.20.0050.0219.22
5.2.10.0040.0209.17
5.2.00.0040.0229.10
5.1.60.0030.0138.74
5.1.50.0070.0148.74
5.1.40.0040.0198.73
5.1.30.0020.0158.91
5.1.20.0040.0148.91
5.1.10.0030.0168.78
5.1.00.0050.0138.78
5.0.50.0040.0158.01
5.0.40.0050.0147.95
5.0.30.0030.0197.85
5.0.20.0050.0137.84
5.0.10.0030.0147.83
5.0.00.0040.0207.82
4.4.90.0020.0117.10
4.4.80.0030.0097.08
4.4.70.0010.0107.08
4.4.60.0030.0107.08
4.4.50.0030.0087.09
4.4.40.0020.0157.06
4.4.30.0010.0117.09
4.4.20.0010.0107.13
4.4.10.0040.0087.13
4.4.00.0030.0147.09
4.3.110.0020.0127.04
4.3.100.0040.0097.04
4.3.90.0020.0087.03
4.3.80.0020.0177.00
4.3.70.0050.0077.02
4.3.60.0010.0107.02
4.3.50.0020.0107.02
4.3.40.0040.0166.97
4.3.30.0010.0106.35
4.3.20.0050.0076.35
4.3.10.0020.0106.32
4.3.00.0030.00911.68

preferences:
34.34 ms | 400 KiB | 5 Q