3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = new stdClass(); $a->foo = new stdClass(); $a->bar = $a; $a->baz = function(){return 1;}; $res = print_r($a, true); echo $res, "\n"; echo str_replace(["\r\n", "\r", "\n"], ["\n", "", '\n'], $res), "\n"; echo preg_replace('/\s+/', ' ', $res), "\n"; echo strlen($res), "\n"; echo strlen(base64_encode($res)), "\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)
8.3.60.0090.00916.75
8.3.50.0070.00716.56
8.3.40.0110.00719.00
8.3.30.0040.01118.90
8.3.20.0080.00021.74
8.3.10.0030.00521.73
8.3.00.0000.00819.11
8.2.180.0110.00418.42
8.2.170.0140.00722.96
8.2.160.0100.00320.53
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0070.00017.97
8.2.120.0050.00326.35
8.2.110.0100.00021.06
8.2.100.0040.00817.91
8.2.90.0000.00818.09
8.2.80.0000.00819.32
8.2.70.0030.00517.88
8.2.60.0040.00417.63
8.2.50.0040.00418.10
8.2.40.0040.00420.60
8.2.30.0050.00319.37
8.2.20.0070.00018.28
8.2.10.0040.00418.10
8.2.00.0070.00018.13
8.1.280.0150.00425.92
8.1.270.0040.00422.23
8.1.260.0040.00426.35
8.1.250.0080.00028.09
8.1.240.0030.00722.54
8.1.230.0080.00420.89
8.1.220.0000.00817.74
8.1.210.0040.00418.91
8.1.200.0000.00917.50
8.1.190.0050.00317.25
8.1.180.0040.00418.10
8.1.170.0000.00718.98
8.1.160.0040.00418.87
8.1.150.0000.00719.11
8.1.140.0040.00417.80
8.1.130.0070.00020.22
8.1.120.0070.00017.66
8.1.110.0000.00817.70
8.1.100.0000.00817.54
8.1.90.0040.00417.58
8.1.80.0040.00417.54
8.1.70.0070.00017.54
8.1.60.0030.00617.79
8.1.50.0000.00717.62
8.1.40.0080.00017.64
8.1.30.0000.01017.88
8.1.20.0090.00317.81
8.1.10.0090.00017.77
8.1.00.0000.00817.67
8.0.300.0040.00420.05
8.0.290.0000.00816.75
8.0.280.0000.00718.46
8.0.270.0000.00817.41
8.0.260.0000.00718.67
8.0.250.0080.00017.12
8.0.240.0030.00317.01
8.0.230.0000.00717.09
8.0.220.0040.00416.98
8.0.210.0000.00717.05
8.0.200.0000.00717.09
8.0.190.0030.00617.02
8.0.180.0000.00817.13
8.0.170.0040.00417.11
8.0.160.0020.00517.04
8.0.150.0040.00416.95
8.0.140.0030.00616.94
8.0.130.0050.00013.51
8.0.120.0040.00416.97
8.0.110.0040.00417.08
8.0.100.0000.00717.00
8.0.90.0000.00717.14
8.0.80.0000.01617.01
8.0.70.0000.00717.07
8.0.60.0040.00417.18
8.0.50.0050.00217.19
8.0.30.0150.00517.27
8.0.20.0110.00917.54
8.0.10.0040.00417.29
8.0.00.0100.01316.82
7.4.330.0050.00015.55
7.4.320.0000.00716.76
7.4.300.0000.00616.73
7.4.290.0000.00716.73
7.4.280.0080.00016.67
7.4.270.0000.00716.74
7.4.260.0040.00416.73
7.4.250.0050.00216.71
7.4.240.0050.00316.77
7.4.230.0000.00716.96
7.4.220.0040.00416.79
7.4.210.0080.00916.79
7.4.200.0040.00416.67
7.4.160.0060.00916.64
7.4.140.0110.01017.86
7.4.130.0120.00616.78
7.4.120.0100.01216.82
7.4.110.0000.01616.59
7.4.100.0090.00916.56
7.4.90.0030.01616.77
7.4.80.0130.01319.39
7.4.70.0060.01216.70
7.4.60.0030.01516.87
7.4.50.0040.01616.83
7.4.40.0160.00316.54
7.4.00.0080.00815.11
7.3.330.0020.00213.52
7.3.320.0060.00013.46
7.3.310.0030.00316.58
7.3.300.0030.00316.54
7.3.290.0030.00516.55
7.3.280.0080.01216.50
7.3.260.0130.01216.51
7.3.240.0110.00716.72
7.3.230.0170.00716.74
7.3.210.0090.00816.62
7.3.200.0060.01016.61
7.3.190.0030.01316.81
7.3.180.0090.01216.43
7.3.170.0130.00316.72
7.3.160.0160.00016.76
7.3.120.0100.00715.12
7.3.110.0070.01115.08
7.3.100.0090.00715.05
7.3.90.0110.00214.88
7.3.80.0030.01214.88
7.3.70.0020.01015.12
7.3.60.0050.00514.98
7.3.50.0030.01314.99
7.3.40.0110.00515.02
7.3.30.0080.00515.13
7.3.20.0050.00916.82
7.3.10.0090.00616.88
7.3.00.0040.01016.76
7.2.330.0130.00616.93
7.2.320.0060.01216.88
7.2.310.0080.00816.89
7.2.300.0140.00816.95
7.2.290.0030.01916.77
7.2.250.0060.01315.04
7.2.240.0090.00915.10
7.2.230.0090.00215.43
7.2.220.0030.00915.38
7.2.210.0060.01015.31
7.2.200.0000.01315.37
7.2.190.0050.00915.28
7.2.180.0110.00315.29
7.2.170.0060.00915.30
7.2.160.0120.00615.07
7.2.150.0070.00717.13
7.2.140.0060.01017.24
7.2.130.0080.00817.20
7.2.120.0130.00316.97
7.2.110.0050.00616.99
7.2.100.0070.00717.15
7.2.90.0090.00717.18
7.2.80.0080.00717.18
7.2.70.0030.01217.09
7.2.60.0100.01117.05
7.2.50.0050.00617.10
7.2.40.0050.01118.13
7.2.30.0060.01118.18
7.2.20.0040.00917.96
7.2.10.0070.00618.14
7.2.00.0100.00818.05
7.1.330.0110.00516.10
7.1.320.0000.00816.15
7.1.310.0090.00516.27
7.1.300.0050.00915.93
7.1.290.0040.01015.95
7.1.280.0070.00516.02
7.1.270.0040.00615.81
7.1.260.0080.00516.06
7.1.250.0020.00916.12
7.1.200.0140.00016.06
7.1.160.0100.01018.62
7.1.150.0050.01118.82
7.1.140.0070.01118.73
7.1.130.0040.01218.79
7.1.120.0090.01318.94
7.1.110.0080.00718.36
7.1.100.0050.01118.33
7.1.90.0080.01418.48
7.1.80.0110.01018.52
7.1.70.0080.01117.28
7.1.60.0250.01135.06
7.1.50.0230.01235.16
7.1.40.0210.01434.48
7.1.30.0210.01534.81
7.1.20.0240.01134.90
7.1.10.0030.01217.01
7.1.00.0070.01016.80

preferences:
35.92 ms | 400 KiB | 5 Q