3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Gotcha { var $x; public function Gotcha($init_value) { $this->x = $init_value; } } echo "<PRE>\n\n"; echo "old PHP 4 style, generates 'deprecated' warnings:\n"; $objs = array(); foreach (array(37, "Wisconsin", 3.14159) as $i) { $a =& new Gotcha($i); $objs[] =& $a; } var_export($objs); echo "\n\n"; echo "new PHP 5 style, ** only change is removal of & in 'new' assignment **:\n"; $objs = array(); foreach (array(37, "Wisconsin", 3.14159) as $i) { $a = new Gotcha($i); $objs[] =& $a; } var_export($objs); echo "\n\n"; echo "php version = " . phpversion() . "\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)
5.6.280.0030.07020.78
5.6.210.0030.04020.46
5.6.200.0130.08318.18
5.6.190.0130.08320.55
5.6.180.0200.04020.53
5.6.170.0370.06020.59
5.6.160.0100.06320.39
5.6.150.0130.07718.29
5.6.140.0030.04718.17
5.6.130.0000.04318.21
5.6.120.0130.08021.02
5.6.110.0100.07721.10
5.6.100.0070.04321.12
5.6.90.0000.04321.03
5.6.80.0170.06720.38
5.6.70.0200.03720.37
5.5.350.0300.04020.48
5.5.340.0070.04018.03
5.5.330.0130.08020.27
5.5.320.0270.08020.28
5.5.310.0300.08020.26
5.5.300.0030.04017.98
5.5.290.0130.07318.04
5.5.280.0130.04320.88
5.5.270.0070.06020.87
5.5.260.0030.05720.80
5.5.250.0100.07320.66
5.5.240.0170.06320.38
5.4.450.0000.08019.30
5.4.440.0000.04319.20
5.4.430.0030.04719.57
5.4.420.0100.08019.52
5.4.410.0030.08019.37
5.4.400.0130.07018.86
5.4.390.0070.05019.16
5.4.380.0070.04019.18
5.4.370.0070.07718.87
5.4.360.0170.06319.25
5.4.350.0130.04719.24
5.4.340.0000.04319.14
5.4.320.0070.03719.16
5.4.310.0070.06719.24
5.4.300.0030.07018.85
5.4.290.0070.04719.24
5.4.280.0030.04719.11
5.4.270.0030.08318.87
5.4.260.0100.06318.85
5.4.250.0070.03719.14
5.4.240.0070.08319.18
5.4.230.0070.07718.84
5.4.220.0030.06019.24
5.4.210.0130.07019.14
5.4.200.0000.04319.07
5.4.190.0130.07018.96
5.4.180.0030.08319.14
5.4.170.0030.05019.09
5.4.160.0000.04019.13
5.4.150.0100.07719.05
5.4.140.0030.07316.33
5.4.130.0070.07316.37
5.4.120.0000.07016.37
5.4.110.0200.06016.43
5.4.100.0100.04016.43
5.4.90.0100.07716.67
5.4.80.0030.07716.65
5.4.70.0000.04016.52
5.4.60.0070.07016.38
5.4.50.0000.05016.39
5.4.40.0070.07316.44
5.4.30.0100.06716.41
5.4.20.0030.07016.41
5.4.10.0170.06316.30
5.4.00.0000.05015.95
5.3.290.0100.03314.67
5.3.280.0070.06314.74
5.3.270.0030.07714.50
5.3.260.0100.05714.68
5.3.250.0030.04314.77
5.3.240.0130.06314.64
5.3.230.0030.06314.74
5.3.220.0000.08314.49
5.3.210.0030.05014.60
5.3.200.0100.07014.60
5.3.190.0100.07314.58
5.3.180.0030.04314.60
5.3.170.0030.05314.61
5.3.160.0070.05014.59
5.3.150.0030.07314.72
5.3.140.0000.04014.57
5.3.130.0000.06714.44
5.3.120.0100.04014.70
5.3.110.0070.04714.60
5.3.100.0100.06714.06
5.3.90.0030.05714.02
5.3.80.0000.06014.07
5.3.70.0030.03714.06
5.3.60.0000.04013.99
5.3.50.0100.03013.92
5.3.40.0000.04013.96
5.3.30.0000.03713.87
5.3.20.0070.03013.84
5.3.10.0030.03313.57
5.3.00.0030.03313.59
5.2.170.0000.03311.33
5.2.160.0030.02711.21
5.2.150.0000.03011.10
5.2.140.0070.02311.14
5.2.130.0070.02311.04
5.2.120.0000.03011.17
5.2.110.0070.02311.11
5.2.100.0000.03011.18
5.2.90.0070.03011.11
5.2.80.0030.02711.09
5.2.70.0030.02711.24
5.2.60.0070.02711.01
5.2.50.0000.03011.18
5.2.40.0070.02310.88
5.2.30.0000.03010.93
5.2.20.0000.03010.88
5.2.10.0000.03010.87
5.2.00.0070.02310.70
5.1.60.0030.02310.03
5.1.50.0000.0279.96
5.1.40.0030.02310.00
5.1.30.0000.02710.46
5.1.20.0030.02310.34
5.1.10.0030.02710.05
5.1.00.0000.02710.23
5.0.50.0000.0208.53
5.0.40.0000.0208.40
5.0.30.0000.0308.30
5.0.20.0030.0178.37
5.0.10.0000.0208.21
5.0.00.0000.0338.22
4.4.90.0000.0177.94
4.4.80.0030.0137.94
4.4.70.0030.0137.94
4.4.60.0030.0137.94
4.4.50.0030.0107.94
4.4.40.0000.0237.94
4.4.30.0000.0277.94
4.4.20.0030.0137.94
4.4.10.0070.0137.94
4.4.00.0000.0237.94
4.3.110.0000.0137.94
4.3.100.0000.0137.94
4.3.90.0000.0177.94
4.3.80.0000.0237.94
4.3.70.0000.0137.94
4.3.60.0000.0137.94
4.3.50.0030.0137.94
4.3.40.0030.0237.94
4.3.30.0000.0137.94
4.3.20.0070.0137.94
4.3.10.0000.0137.94
4.3.00.0000.0137.94

preferences:
148.05 ms | 1394 KiB | 7 Q