3v4l.org

run code in 300+ PHP versions simultaneously
<?php $time = microtime(true); $arr = array("4","6","2","ololo"); $i=0; while($i < 50000) { $i++; json_encode(time); } $time1 = microtime(true) - $time; $time = microtime(true); $i=0; while($i < 50000) { $i++; serialize(time); } $time2 = microtime(true) - $time; echo '1 took ' . number_format($time1, 3) . "\n"; echo '2 took ' . number_format($time2, 3) . "\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)
7.2.00.0080.00819.29
7.1.70.0040.00417.13
7.1.60.0090.00617.34
7.1.50.0130.01016.79
7.1.00.0130.06722.34
7.0.200.0090.00916.56
7.0.140.0000.07722.09
7.0.90.0130.07019.97
7.0.80.0130.06019.84
7.0.70.0000.06019.83
7.0.60.0130.07319.92
7.0.50.0170.07020.30
7.0.40.0030.07020.08
7.0.30.0100.08020.12
7.0.20.0070.04020.10
7.0.10.0130.06320.04
7.0.00.0200.06720.16
5.6.280.0070.07321.11
5.6.240.0000.06020.49
5.6.230.0170.06720.63
5.6.220.0070.07720.56
5.6.210.0070.08720.71
5.6.200.0000.09020.95
5.6.190.0070.04021.13
5.6.180.0100.06720.95
5.6.170.0100.07321.05
5.6.160.0000.07720.98
5.6.150.0030.08321.07
5.6.140.0000.05721.05
5.6.130.0070.07021.13
5.6.120.0070.07021.04
5.6.110.0100.08721.05
5.6.100.0130.07021.00
5.6.90.0070.07720.86
5.6.80.0170.03720.39
5.6.70.0030.08020.45
5.6.60.0070.03720.30
5.6.50.0100.07720.46
5.6.40.0070.06720.29
5.6.30.0030.08020.29
5.6.20.0030.06020.35
5.6.10.0030.08020.38
5.6.00.0130.07320.39
5.5.380.0070.05020.37
5.5.370.0030.08320.32
5.5.360.0100.08020.50
5.5.350.0070.07720.40
5.5.340.0130.06720.80
5.5.330.0170.07320.77
5.5.320.0070.08320.87
5.5.310.0070.07020.64
5.5.300.0030.07320.91
5.5.290.0070.08020.91
5.5.280.0070.06720.73
5.5.270.0230.04020.91
5.5.260.0070.05720.75
5.5.250.0030.07320.54
5.5.240.0030.07720.25
5.5.230.0030.08320.23
5.5.220.0030.06720.22
5.5.210.0070.07020.29
5.5.200.0030.07320.23
5.5.190.0070.08020.27
5.5.180.0130.07320.07
5.5.160.0070.04719.95
5.5.150.0130.06320.25
5.5.140.0030.07320.23
5.5.130.0100.07020.11
5.5.120.0130.06720.27
5.5.110.0000.06020.14
5.5.100.0070.07320.17
5.5.90.0100.07320.07
5.5.80.0000.08020.06
5.5.70.0030.05020.15
5.5.60.0130.07320.05
5.5.50.0130.07020.02
5.5.40.0100.06720.09
5.5.30.0000.07720.12
5.5.20.0130.07320.09
5.5.10.0170.06720.04
5.5.00.0030.06319.99
5.4.450.0130.07019.20
5.4.440.0070.07719.22
5.4.430.0030.06719.29
5.4.420.0100.06319.34
5.4.410.0130.07319.17
5.4.400.0100.05318.93
5.4.390.0130.07018.88
5.4.380.0070.07019.05
5.4.370.0130.06318.89
5.4.360.0070.07718.89
5.4.350.0030.07018.89
5.4.340.0130.07718.86
5.4.320.0070.06718.71
5.4.310.0230.06019.08
5.4.300.0000.06318.97
5.4.290.0100.06718.82
5.4.280.0100.04718.96
5.4.270.0130.06319.04
5.4.260.0100.04018.82
5.4.250.0100.07018.82
5.4.240.0000.08018.97
5.4.230.0000.08318.71
5.4.220.0130.07019.07
5.4.210.0070.05318.96
5.4.200.0130.06718.74
5.4.190.0070.07019.07
5.4.180.0000.08018.80
5.4.170.0200.07018.74
5.4.160.0100.07718.88
5.4.150.0030.08318.86
5.4.140.0100.07716.21
5.4.130.0170.05716.25
5.4.120.0070.07316.24
5.4.110.0130.06016.41
5.4.100.0000.07716.29
5.4.90.0030.07716.29
5.4.80.0070.05716.32
5.4.70.0100.07016.12
5.4.60.0070.07316.11
5.4.50.0030.08016.21
5.4.40.0070.07016.22
5.4.30.0070.07016.38
5.4.20.0100.06716.11
5.4.10.0030.07016.21
5.4.00.0070.07315.71
5.3.290.0000.07314.30
5.3.280.0070.06714.38
5.3.270.0000.08014.38
5.3.260.0130.07014.37
5.3.250.0000.08014.38
5.3.240.0070.06314.28
5.3.230.0000.04314.44
5.3.220.0070.06014.40
5.3.210.0030.08314.27
5.3.200.0070.04314.38
5.3.190.0000.07714.35
5.3.180.0100.07314.30
5.3.170.0070.06014.24
5.3.160.0000.05014.24
5.3.150.0070.07314.33
5.3.140.0100.04014.32
5.3.130.0070.08014.21
5.3.120.0030.04714.24
5.3.110.0100.07314.36
5.3.100.0100.05713.73
5.3.90.0070.07013.84
5.3.80.0030.04713.79
5.3.70.0030.05313.71
5.3.60.0070.07013.60
5.3.50.0070.07313.57
5.3.40.0030.07713.70
5.3.30.0200.03313.51
5.3.20.0100.06313.36
5.3.10.0100.06013.32
5.3.00.0030.07013.41

preferences:
34.91 ms | 401 KiB | 5 Q