3v4l.org

run code in 300+ PHP versions simultaneously
<?php error_reporting(-1); function myCheckA($in) { return isset($in); } function myCheck($in) { return isset($GLOBALS[$in]); } $var1='Something'; $var2='var1'; echo 'Set: ' . isset($$var2), "\n"; $var2='nope'; echo 'Set: ' . isset($$var2), "\n"; $var2='var1'; echo 'Set: ' . myCheck($var2), "\n"; $var2='nope'; var_dump($$var2); echo 'Set: ' . myCheck($var2), "\n"; var_dump($$var2); ?>

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)
8.3.40.0120.00918.67
8.3.30.0090.00620.30
8.3.20.0070.00020.42
8.3.10.0050.00321.92
8.3.00.0070.00022.34
8.2.170.0000.01822.96
8.2.160.0100.00322.11
8.2.150.0050.00324.18
8.2.140.0040.00424.66
8.2.130.0120.00326.16
8.2.120.0000.00820.73
8.2.110.0060.00322.30
8.2.100.0060.00617.84
8.2.90.0040.00419.27
8.2.80.0000.00819.31
8.2.70.0050.00317.63
8.2.60.0040.00417.80
8.2.50.0090.00018.07
8.2.40.0050.00319.97
8.2.30.0070.00019.32
8.2.20.0020.00517.65
8.2.10.0030.00517.80
8.2.00.0040.00417.76
8.1.270.0000.00823.99
8.1.260.0040.00426.35
8.1.250.0080.00028.09
8.1.240.0060.00323.96
8.1.230.0070.00419.08
8.1.220.0070.00417.78
8.1.210.0030.00618.77
8.1.200.0060.00317.25
8.1.190.0040.00417.40
8.1.180.0000.00919.01
8.1.170.0040.00418.58
8.1.160.0040.00718.89
8.1.150.0030.00518.63
8.1.140.0040.00417.38
8.1.130.0040.00417.73
8.1.120.0050.00317.38
8.1.110.0040.00417.53
8.1.100.0030.00417.48
8.1.90.0020.00517.44
8.1.80.0030.00317.45
8.1.70.0030.00317.46
8.1.60.0040.00417.62
8.1.50.0040.00417.48
8.1.40.0090.00017.49
8.1.30.0000.00717.68
8.1.20.0050.00317.54
8.1.10.0030.00517.54
8.1.00.0040.00417.34
8.0.300.0060.00318.77
8.0.290.0070.00017.18
8.0.280.0000.00618.44
8.0.270.0030.00517.27
8.0.260.0030.00316.89
8.0.250.0000.00716.89
8.0.240.0000.00817.03
8.0.230.0000.00716.90
8.0.220.0030.00316.88
8.0.210.0000.00816.85
8.0.200.0000.00717.02
8.0.190.0040.00416.97
8.0.180.0070.00016.98
8.0.170.0000.00717.00
8.0.160.0070.00016.93
8.0.150.0040.00316.90
8.0.140.0030.00316.91
8.0.130.0030.00313.37
8.0.120.0070.00016.93
8.0.110.0000.00716.95
8.0.100.0000.00716.89
8.0.90.0070.00016.96
8.0.80.0090.00616.97
8.0.70.0040.00416.75
8.0.60.0050.00216.86
8.0.50.0000.00716.85
8.0.30.0070.01217.13
8.0.20.0140.00517.40
8.0.10.0000.00717.04
8.0.00.0080.01016.84
7.4.330.0000.00515.00
7.4.320.0070.00016.60
7.4.300.0030.00316.48
7.4.290.0060.00316.48
7.4.280.0050.00316.41
7.4.270.0000.00716.53
7.4.260.0000.00613.31
7.4.250.0020.00516.34
7.4.240.0050.00216.56
7.4.230.0000.00716.72
7.4.220.0070.01016.58
7.4.210.0070.00816.62
7.4.200.0050.00316.71
7.4.190.0030.00316.65
7.4.160.0130.00316.50
7.4.150.0030.01617.40
7.4.140.0060.01117.86
7.4.130.0090.01016.57
7.4.120.0140.00316.58
7.4.110.0130.00616.36
7.4.100.0070.01016.73
7.4.90.0120.00616.43
7.4.80.0110.01119.39
7.4.70.0120.00616.55
7.4.60.0130.00716.59
7.4.50.0060.00316.50
7.4.40.0030.00722.77
7.4.30.0090.00716.71
7.4.00.0050.01014.90
7.3.330.0050.00013.31
7.3.320.0050.00013.43
7.3.310.0000.00716.39
7.3.300.0030.00316.32
7.3.290.0110.00316.39
7.3.280.0090.00816.43
7.3.270.0080.00917.40
7.3.260.0080.01016.54
7.3.250.0090.00916.47
7.3.240.0140.00616.58
7.3.230.0100.01016.39
7.3.210.0170.00016.63
7.3.200.0090.00619.39
7.3.190.0130.00316.46
7.3.180.0080.00816.42
7.3.170.0130.00316.44
7.3.160.0100.00716.48
7.3.120.0070.00614.81
7.3.110.0070.01014.76
7.3.100.0030.01014.89
7.3.90.0060.00314.67
7.3.80.0000.00915.14
7.3.70.0000.01414.89
7.3.60.0060.00614.96
7.3.50.0080.00614.74
7.3.40.0060.00914.85
7.3.30.0090.00614.92
7.3.20.0110.00316.77
7.3.10.0100.00316.66
7.3.00.0060.01016.72
7.2.330.0040.01416.50
7.2.320.0080.00816.77
7.2.310.0210.00316.48
7.2.300.0130.00616.89
7.2.290.0100.00716.62
7.2.250.0100.00314.76
7.2.240.0100.01015.27
7.2.230.0130.00315.34
7.2.220.0060.00614.98
7.2.210.0060.00614.73
7.2.200.0070.00314.76
7.2.190.0090.00315.21
7.2.180.0060.01114.87
7.2.170.0060.00915.18
7.2.130.0070.00517.03
7.2.120.0090.00617.02
7.2.110.0050.01216.89
7.2.100.0080.00816.78
7.2.90.0060.00516.96
7.2.80.0080.00916.84
7.2.70.0100.00416.82
7.2.60.0070.00516.86
7.2.50.0070.00716.89
7.2.40.0060.00817.03
7.2.30.0060.00917.07
7.2.20.0040.01016.94
7.2.10.0050.01016.92
7.2.00.0090.00417.66
7.1.330.0040.00815.94
7.1.320.0040.01415.96
7.1.310.0060.00915.66
7.1.300.0030.01015.63
7.1.290.0070.00315.81
7.1.280.0130.00015.85
7.1.270.0040.00415.79
7.1.260.0040.00815.70
7.1.250.0080.00515.68
7.1.240.0030.01215.86
7.1.230.0070.00715.93
7.1.220.0110.00015.80
7.1.210.0110.00415.61
7.1.200.0050.00715.90
7.1.190.0110.00315.84
7.1.180.0060.00715.95
7.1.170.0070.00715.97
7.1.160.0060.00615.88
7.1.150.0060.00915.77
7.1.140.0070.00715.71
7.1.130.0060.00615.97
7.1.120.0040.00715.56
7.1.110.0030.00615.86
7.1.100.0070.00817.02
7.1.90.0090.00315.84
7.1.80.0030.01015.98
7.1.70.0050.00516.52
7.1.60.0190.00516.35
7.1.50.0100.00816.50
7.1.40.0110.00715.86
7.1.30.0080.00815.68
7.1.20.0070.00715.86
7.1.10.0100.00315.75
7.1.00.0030.02119.11
7.0.330.0110.00415.40
7.0.320.0080.00415.37
7.0.310.0070.00715.46
7.0.300.0070.00715.21
7.0.290.0030.01015.39
7.0.280.0070.00715.58
7.0.270.0030.01015.13
7.0.260.0060.00615.47
7.0.250.0070.00715.65
7.0.240.0090.00615.60
7.0.230.0090.00015.51
7.0.220.0060.00615.21
7.0.210.0070.00715.58
7.0.200.0040.01016.13
7.0.190.0120.00415.59
7.0.180.0090.00615.18
7.0.170.0070.00315.46
7.0.160.0000.01215.52
7.0.150.0120.00615.21
7.0.140.0070.03818.84
7.0.130.0040.00715.38
7.0.120.0070.00715.18
7.0.110.0070.01015.32
7.0.100.0030.01315.59
7.0.90.0140.00015.32
7.0.80.0110.00815.27
7.0.70.0040.04718.57
7.0.60.0050.04518.68
7.0.50.0120.04118.90
7.0.40.0050.03016.71
7.0.30.0050.04316.70
7.0.20.0070.03116.78
7.0.10.0020.04516.76
7.0.00.0050.02316.83
5.6.380.0050.00514.07
5.6.370.0030.00714.25
5.6.360.0050.00314.12
5.6.350.0040.00814.03
5.6.340.0000.01313.98
5.6.330.0080.00414.39
5.6.320.0030.00514.10
5.6.310.0060.00614.14
5.6.300.0060.00314.39
5.6.290.0060.00914.63
5.6.280.0070.03517.56
5.6.270.0060.00613.99
5.6.260.0070.00314.31
5.6.250.0030.00614.32
5.6.240.0080.00814.18
5.6.230.0080.00514.30
5.6.220.0110.03917.55
5.6.210.0050.02817.29
5.6.200.0110.03717.74
5.6.190.0070.04317.48
5.6.180.0060.04117.52
5.6.170.0060.04317.70
5.6.160.0050.02717.60
5.6.150.0030.02517.51
5.6.140.0000.04717.66
5.6.130.0020.04517.64
5.6.120.0040.03217.83
5.6.110.0030.04317.64
5.6.100.0020.05017.52
5.6.90.0060.02117.57
5.6.80.0050.02017.39
5.6.70.0060.03917.39
5.6.60.0050.02217.20
5.6.50.0050.03517.24
5.6.40.0110.03817.17
5.6.30.0070.03917.31
5.6.20.0060.04517.41
5.6.10.0090.04417.14
5.6.00.0060.04117.39
5.5.380.0060.00611.21
5.5.370.0060.00611.16
5.5.360.0070.03315.82
5.5.350.0070.03215.75
5.5.340.0080.02615.92
5.5.330.0090.04216.00
5.5.320.0080.03616.04
5.5.310.0050.03716.05
5.5.300.0020.02515.95
5.5.290.0050.04615.99
5.5.280.0040.02615.90
5.5.270.0100.01715.85
5.5.260.0020.04615.85
5.5.250.0050.02215.67
5.5.240.0030.02215.46
5.5.230.0030.02715.42
5.5.220.0060.03815.61
5.5.210.0010.02915.63
5.5.200.0020.03215.59
5.5.190.0060.04215.65
5.5.180.0080.04115.65
5.5.170.0070.00711.26
5.5.160.0080.04315.57
5.5.150.0020.03015.50
5.5.140.0060.01915.49
5.5.130.0060.03215.56
5.5.120.0000.04515.50
5.5.110.0040.05115.63
5.5.100.0030.04215.40
5.5.90.0090.02315.52
5.5.80.0080.04115.69
5.5.70.0090.03715.55
5.5.60.0030.03615.53
5.5.50.0050.04115.59
5.5.40.0050.04315.59
5.5.30.0050.04315.58
5.5.20.0060.04315.54
5.5.10.0070.04115.35
5.5.00.0060.04515.53
5.4.450.0080.04315.40
5.4.440.0060.04515.27
5.4.430.0050.03315.23
5.4.420.0050.04515.42
5.4.410.0060.04215.18
5.4.400.0040.03414.99
5.4.390.0080.03515.09
5.4.380.0030.02514.97
5.4.370.0090.03914.96
5.4.360.0040.04215.26
5.4.350.0160.03514.96
5.4.340.0070.04214.98
5.4.330.0060.00611.06
5.4.320.0050.03515.12
5.4.310.0090.03815.06
5.4.300.0050.04215.13
5.4.290.0040.02415.08
5.4.280.0050.02214.97
5.4.270.0070.02214.87
5.4.260.0060.03914.96
5.4.250.0050.04015.07
5.4.240.0060.04214.97
5.4.230.0070.05715.08
5.4.220.0050.04215.04
5.4.210.0030.03815.05
5.4.200.0040.04015.08
5.4.190.0050.03215.07
5.4.180.0080.04015.07
5.4.170.0150.04014.98
5.4.160.0120.04314.92
5.4.150.0160.03514.99
5.4.140.0100.02913.87
5.4.130.0140.03013.69
5.4.120.0160.03513.65
5.4.110.0110.02813.79
5.4.100.0150.03313.76
5.4.90.0160.02213.76
5.4.80.0230.03813.81
5.4.70.0150.04013.78
5.4.60.0150.03713.61
5.4.50.0210.03513.69
5.4.40.0200.03713.65
5.4.30.0140.03813.70
5.4.20.0190.03513.76
5.4.10.0140.02513.60
5.4.00.0100.02013.54
5.3.290.0090.04012.71
5.3.280.0090.03912.59
5.3.270.0090.04412.73
5.3.260.0110.04612.62
5.3.250.0120.02712.67
5.3.240.0110.04012.48
5.3.230.0200.03712.54
5.3.220.0080.02512.43
5.3.210.0110.03312.44
5.3.200.0180.03712.54
5.3.190.0200.03512.48
5.3.180.0160.04112.57
5.3.170.0170.03712.54
5.3.160.0170.02512.63
5.3.150.0290.02312.66
5.3.140.0170.04212.62
5.3.130.0220.04012.55
5.3.120.0280.03712.46
5.3.110.0190.04212.62
5.3.100.0170.02812.37
5.3.90.0070.03712.41
5.3.80.0110.04012.11
5.3.70.0200.02012.26
5.3.60.0140.02712.23
5.3.50.0150.02012.17
5.3.40.0260.01712.32
5.3.30.0260.02012.29
5.3.20.0140.01812.03
5.3.10.0200.02012.03
5.3.00.0070.02011.95
5.2.170.0190.02711.31
5.2.160.0110.01811.30
5.2.150.0090.02311.23
5.2.140.0170.01711.30
5.2.130.0100.01711.21
5.2.120.0130.02011.29
5.2.110.0080.01911.26
5.2.100.0140.02311.22
5.2.90.0120.02011.16
5.2.80.0140.02011.13
5.2.70.0150.01711.28
5.2.60.0130.01511.30
5.2.50.0180.01511.26
5.2.40.0220.01511.29
5.2.30.0070.02011.27
5.2.20.0120.01711.17
5.2.10.0120.01711.18
5.2.00.0070.01811.12
5.1.60.0110.01210.78
5.1.50.0020.02910.78
5.1.40.0040.01010.69
5.1.30.0030.02110.75
5.1.20.0030.01810.82
5.1.10.0030.01310.86
5.1.00.0030.01310.78
5.0.50.0030.01010.37
5.0.40.0020.01710.37
5.0.30.0060.01210.37
5.0.20.0030.01810.37
5.0.10.0020.01410.37
5.0.00.0040.02810.37
4.4.90.0120.01210.37
4.4.80.0100.00810.37
4.4.70.0050.01010.37
4.4.60.0050.01810.37
4.4.50.0060.00910.37
4.4.40.0020.01110.37
4.4.30.0050.00510.37
4.4.20.0030.00810.37
4.4.10.0020.00910.37
4.4.00.0020.01310.37
4.3.110.0040.00910.37
4.3.100.0020.00910.37
4.3.90.0050.00710.37
4.3.80.0030.02810.37
4.3.70.0020.01510.37
4.3.60.0030.00810.37
4.3.50.0000.01210.37
4.3.40.0030.01310.37
4.3.30.0020.00910.37
4.3.20.0020.00910.37
4.3.10.0000.01010.37
4.3.00.0020.00810.37

preferences:
40.75 ms | 400 KiB | 5 Q