3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo "Only strings: ", ob_start(); $i = 0; $time0 = microtime(1); while($i++ < 100000) echo'this is a test','this is a test','this is a test','this is a test','this is a test','this is a test'; $time1 = microtime(1); ob_end_clean(); echo "comma=", round($c=($time1-$time0)*1000, 3), "ms"; ob_start(); $i = 0; $time0 = microtime(1); while($i++ < 100000) echo'this is a test'.'this is a test'.'this is a test'.'this is a test'.'this is a test'.'this is a test'; $time1 = microtime(1); ob_end_clean(); echo ", dot=", round($d=($time1-$time0)*1000, 3), "ms"; echo ' > delta= ', round(($d - $c) * 100 / $d, 1), "%\n"; echo "With vars: ", ob_start(); $i = 0; $time0 = microtime(1); while($i++ < 100000) echo'this is a test',$i,'this is a test',$i,'this is a test',$i; $time1 = microtime(1); ob_end_clean(); echo "comma=", round($c=($time1-$time0)*1000, 3), "ms"; ob_start(); $i = 0; $time0 = microtime(1); while($i++ < 100000) echo'this is a test'.$i.'this is a test'.$i.'this is a test'.$i; $time1 = microtime(1); ob_end_clean(); echo ", dot=", round($d=($time1-$time0)*1000, 3), "ms"; echo ' > delta= ', round(($d - $c) * 100 / $d, 1), "%\n"; echo "With array: "; $A = array('a' => 'A', 'b' => 'B', 'c' => 'C'); ob_start(); $i = 0; $time0 = microtime(1); while($i++ < 100000) echo'this is a test',$A['a'],'this is a test',$A['b'],'this is a test',$A['c']; $time1 = microtime(1); ob_end_clean(); echo "comma=", round($c=($time1-$time0)*1000, 3), "ms"; ob_start(); $i = 0; $time0 = microtime(1); while($i++ < 100000) echo'this is a test'.$A['a'].'this is a test'.$A['b'].'this is a test'.$A['c']; $time1 = microtime(1); ob_end_clean(); echo ", dot=", round($d=($time1-$time0)*1000, 3), "ms"; echo ' > delta= ', round(($d - $c) * 100 / $d, 1), "%\n"; echo "With array & function: "; $A = array('a' => 'A', 'b' => 'B', 'c' => 'C'); ob_start(); $i = 0; $time0 = microtime(1); while($i++ < 100000) echo'this is a test',ss($A['a']),'this is a test',ss($A['b']),'this is a test',ss($A['c']); $time1 = microtime(1); ob_end_clean(); echo "comma=", round($c=($time1-$time0)*1000, 3), "ms"; ob_start(); $i = 0; $time0 = microtime(1); while($i++ < 100000) echo'this is a test'.ss($A['a']).'this is a test'.ss($A['b']).'this is a test'.ss($A['c']); $time1 = microtime(1); ob_end_clean(); echo ", dot=", round($d=($time1-$time0)*1000, 3), "ms"; echo ' > delta= ', round(($d - $c) * 100 / $d, 1), "%\n"; function ss($s) { return substr($s, 0); }

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)
7.2.00.0200.16033.04
7.1.70.0100.18931.15
7.1.60.0200.21431.37
7.1.50.0230.22830.94
7.1.00.0100.29736.22
7.0.200.1250.19030.87
7.0.140.0170.27335.99
7.0.71.1130.24335.39
7.0.61.3030.24335.36
7.0.51.1970.20735.77
7.0.40.8200.30031.88
7.0.30.8230.30332.02
7.0.20.6930.20731.93
7.0.10.7330.26331.97
7.0.00.7370.22332.05
5.6.280.0030.42030.47
5.6.220.0170.38728.77
5.6.210.0130.39028.86
5.6.200.0100.40729.22
5.6.190.0030.33329.45
5.6.180.0570.433160.89
5.6.170.0130.40729.33
5.6.160.0030.33729.39
5.6.150.0030.29729.39
5.6.140.0070.31329.35
5.6.130.0030.34029.38
5.6.120.0100.33729.38
5.6.110.0130.33329.44
5.6.100.0070.34029.30
5.6.90.0170.38029.30
5.6.80.0070.37028.69
5.6.70.0170.39328.74
5.6.60.0170.38028.79
5.6.50.0200.39328.71
5.6.40.0070.39728.74
5.6.30.0130.37028.67
5.6.20.0070.42028.64
5.6.10.0130.36028.69
5.6.00.0130.38028.55
5.5.360.0200.39328.67
5.5.350.0130.40328.76
5.5.340.0000.43029.08
5.5.330.0100.41029.20
5.5.320.0070.27729.11
5.5.310.0070.33329.16
5.5.300.0030.28028.93
5.5.290.0030.33329.18
5.5.280.0170.32029.17
5.5.270.0170.30729.20
5.5.260.0230.38029.14
5.5.250.0170.36028.82
5.5.240.0100.35028.31
5.5.230.0130.38028.54
5.5.220.0070.34028.52
5.5.210.0100.38328.55
5.5.200.0070.38028.37
5.5.190.0070.37028.52
5.5.180.0200.40028.41
5.5.160.0170.42028.52
5.5.150.0070.38028.50
5.5.140.0130.41728.43
5.5.130.0100.36328.45
5.5.120.0070.35328.41
5.5.110.0130.42028.48
5.5.100.0170.41328.30
5.5.90.0070.38028.45
5.5.80.0170.40028.22
5.5.70.0100.34728.37
5.5.60.0100.40028.44
5.5.50.0100.34328.39
5.5.40.0170.41728.37
5.5.30.0230.36328.39
5.5.20.0130.40728.41
5.5.10.0270.38328.31
5.5.00.0030.36328.31
5.4.450.0000.32027.58
5.4.440.0200.39027.70
5.4.430.0230.34027.47
5.4.420.0030.28727.75
5.4.410.0100.37327.32
5.4.400.0100.38327.27
5.4.390.0170.38727.37
5.4.380.0300.39327.20
5.4.370.0670.457158.45
5.4.360.0200.36327.43
5.4.350.0030.38727.25
5.4.340.0130.37327.37
5.4.320.0130.37727.13
5.4.310.0130.31727.24
5.4.300.0170.39727.30
5.4.290.0370.38027.22
5.4.280.0270.36027.22
5.4.270.0100.38727.23
5.4.260.0070.38727.26
5.4.250.0100.32327.15
5.4.240.0170.38327.36
5.4.230.0170.40027.23
5.4.220.0200.37727.18
5.4.210.0230.39727.21
5.4.200.0170.39027.28
5.4.190.0200.39327.22
5.4.180.0170.39027.32
5.4.170.0200.35727.42
5.4.160.0370.38727.41
5.4.150.0070.38727.21
5.4.140.0170.39724.67
5.4.130.0200.43724.72
5.4.120.0000.36324.68
5.4.110.0200.31724.73
5.4.100.0130.37324.54
5.4.90.0100.39324.73
5.4.80.0030.38324.75
5.4.70.0100.33024.70
5.4.60.0070.35024.71
5.4.50.0170.45024.69
5.4.40.0030.30724.69
5.4.30.0070.27324.64
5.4.20.0170.37024.64
5.4.10.0070.39024.56
5.4.00.0170.40024.16
5.3.290.0170.44022.86
5.3.280.0130.43722.82
5.3.270.0070.36022.85
5.3.260.0200.42322.73
5.3.250.0170.43022.77
5.3.240.0070.43322.79
5.3.230.0100.44722.75
5.3.220.0100.38722.75
5.3.210.0030.43022.72
5.3.200.0200.40022.70
5.3.190.0230.44022.70
5.3.180.0070.43022.69
5.3.170.0100.38322.82
5.3.160.0200.40722.73
5.3.150.0070.38022.73
5.3.140.0200.38722.69
5.3.130.0100.42322.81
5.3.120.0030.38722.78
5.3.110.0100.45722.71
5.3.100.0100.43722.17
5.3.90.0070.37322.28
5.3.80.0130.42722.13
5.3.70.0070.39322.16
5.3.60.0130.43322.07
5.3.50.0130.39022.23
5.3.40.0230.44322.14
5.3.30.0130.41022.15
5.3.20.0070.46021.72
5.3.10.0030.37721.88
5.3.00.0100.32321.70
5.2.170.0170.49319.58
5.2.160.0070.48719.58
5.2.150.0700.50019.54
5.2.140.0070.47019.34
5.2.130.0170.49019.54
5.2.120.0030.44319.53
5.2.110.0000.38719.53
5.2.100.0100.46319.43
5.2.90.0130.42319.50
5.2.80.0300.36319.52
5.2.70.0030.44019.60
5.2.60.0070.45019.46
5.2.50.0100.42019.35
5.2.40.0000.40319.32
5.2.30.0170.45319.30
5.2.20.0100.48319.21
5.2.10.0100.44019.14
5.2.00.0500.51019.13
5.1.60.0070.55017.95
5.1.50.0100.51318.04
5.1.40.0130.50018.37
5.1.30.0130.51018.41
5.1.20.0070.49318.56
5.1.10.0130.51018.15
5.1.00.0100.51018.19
5.0.50.0170.64016.66
5.0.40.0070.68716.51
5.0.30.0230.61716.32
5.0.20.0100.59316.32
5.0.10.0100.63716.22
5.0.00.0100.57316.18
4.4.90.0130.48014.01
4.4.80.0000.46314.03
4.4.70.0030.67714.03
4.4.60.0100.61713.98
4.4.50.0070.63713.95
4.4.40.0230.67714.02
4.4.30.0100.63713.96
4.4.20.0100.62013.94
4.4.10.0100.61714.11
4.4.00.0100.65014.06
4.3.110.0070.63713.94
4.3.100.0130.59013.93
4.3.90.0130.58713.89
4.3.80.0070.57013.86
4.3.70.0030.50013.90
4.3.60.0030.48013.86
4.3.50.0070.47713.92
4.3.40.0100.45313.83
4.3.30.0070.63012.63
4.3.20.0030.59712.65
4.3.10.0100.63012.59
4.3.00.0130.54312.52

preferences:
37.5 ms | 401 KiB | 5 Q