3v4l.org

run code in 300+ PHP versions simultaneously
<?php $results = []; $aHash = []; $i = 0; $tmp = ''; while ($i < 10000) { $tmp .= 'a'; ++$i; } $aHash = array_fill(100000000000000000000000, 100, $tmp); unset($i, $tmp); /* The Test */ $t = microtime(true); foreach ($aHash as $key => $val) $aHash[$key] .= "a"; echo (microtime(true) - $t) * 1000000;

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)
7.4.10.0030.01615.28
7.4.00.0030.01815.03
7.3.130.0090.00614.91
7.3.120.0040.01315.06
7.3.110.0090.00815.09
7.3.100.0040.01114.82
7.3.90.0050.01015.09
7.3.80.0020.00914.84
7.3.70.0070.00914.91
7.3.60.0030.01114.93
7.3.50.0030.01114.87
7.3.40.0080.00815.03
7.3.30.0080.00514.87
7.3.20.0040.01216.67
7.3.10.0050.01116.74
7.3.00.0080.00516.70
7.2.260.0070.01115.23
7.2.250.0050.01315.11
7.2.240.0110.00515.30
7.2.230.0070.01015.20
7.2.220.0090.00715.32
7.2.210.0100.00615.19
7.2.200.0050.00914.96
7.2.190.0020.01515.04
7.2.180.0070.00915.15
7.2.170.0020.01115.13
7.2.160.0060.00915.17
7.2.150.0060.01016.98
7.2.140.0040.01217.14
7.2.130.0000.01416.82
7.2.120.0070.00717.03
7.2.110.0120.00316.94
7.2.100.0070.00716.96
7.2.90.0030.01016.96
7.2.80.0060.00616.84
7.2.70.0090.00616.96
7.2.60.0040.01217.04
7.2.50.0120.00017.03
7.2.40.0100.00417.06
7.2.30.0040.00817.02
7.2.20.0030.01016.88
7.2.10.0070.00716.80
7.2.00.0070.00918.20
7.1.330.0000.01515.85
7.1.320.0050.00815.63
7.1.310.0040.00715.85
7.1.300.0060.00615.86
7.1.290.0030.01015.50
7.1.280.0050.00815.98
7.1.270.0010.00815.67
7.1.260.0030.01215.74
7.1.250.0030.01015.70
7.1.240.0070.00715.85
7.1.230.0040.01115.69
7.1.220.0030.01015.64
7.1.210.0000.01415.83
7.1.200.0040.01115.91
7.1.190.0070.00315.46
7.1.180.0080.00815.86
7.1.170.0030.01315.57
7.1.160.0000.01115.95
7.1.150.0040.01115.96
7.1.140.0080.00415.68
7.1.130.0070.00715.88
7.1.120.0080.00515.91
7.1.110.0100.00715.93
7.1.100.0040.00815.86
7.1.90.0040.01115.60
7.1.80.0090.00915.93
7.1.70.0030.00816.50
7.1.60.0110.00917.61
7.1.50.0140.01025.17
7.1.40.0000.01515.63
7.1.30.0080.00815.82
7.1.20.0090.00615.93
7.1.10.0060.00915.93
7.1.00.0020.04619.27
7.0.330.0030.00615.41
7.0.320.0000.01015.39
7.0.310.0000.01215.52
7.0.300.0080.00415.48
7.0.290.0040.00715.42
7.0.280.0030.00615.31
7.0.270.0030.00615.44
7.0.260.0090.00615.51
7.0.250.0070.01115.44
7.0.240.0030.01115.47
7.0.230.0040.01115.48
7.0.220.0000.00915.21
7.0.210.0000.01415.33
7.0.200.0020.01215.22
7.0.190.0040.00415.44
7.0.180.0040.01115.54
7.0.170.0000.01415.55
7.0.160.0030.01015.57
7.0.150.0070.00715.48
7.0.140.0030.04418.63
7.0.130.0040.01115.31
7.0.120.0030.01015.34
7.0.110.0250.02517.71
7.0.100.0180.02817.74
7.0.90.0120.02217.75
7.0.80.0140.02317.72
7.0.70.0050.02817.72
7.0.60.0120.02517.63
7.0.50.0160.03318.03
7.0.40.0070.02316.76
7.0.30.0070.02216.74
7.0.20.0090.02216.79
7.0.10.0030.02516.73
7.0.00.0050.03616.87
5.6.400.0060.00915.46
5.6.390.0040.01115.60
5.6.380.0030.01315.49
5.6.370.0100.00615.66
5.6.360.0090.00615.33
5.6.350.0040.01414.97
5.6.340.0000.01115.88
5.6.330.0000.01015.63
5.6.320.0090.00615.87
5.6.310.0110.00715.36
5.6.300.0000.01515.23
5.6.290.0060.00915.39
5.6.280.0080.03918.43
5.6.270.0140.00315.39
5.6.260.0100.00315.43
5.6.250.0050.02518.61
5.6.240.0130.02718.43
5.6.230.0080.02218.55
5.6.220.0070.02318.46
5.6.210.0110.03518.31
5.6.200.0050.02518.67
5.6.190.0070.04818.84
5.6.180.0070.02818.78
5.6.170.0070.02018.54
5.6.160.0100.02318.81
5.6.150.0070.02518.42
5.6.140.0080.02418.61
5.6.130.0050.02518.58
5.6.120.0100.04318.59
5.6.110.0140.03418.61
5.6.100.0090.02918.60
5.6.90.0090.04118.87
5.6.80.0050.04618.11
5.6.70.0080.04118.49
5.6.60.0050.04218.25
5.6.50.0070.02618.28
5.6.40.0050.04318.38
5.6.30.0100.03218.39
5.6.20.0050.04518.34
5.6.10.0030.03318.22
5.6.00.0100.02818.35
5.5.380.0020.02518.41
5.5.370.0030.02718.31
5.5.360.0070.03718.32
5.5.350.0030.02818.55
5.5.340.0050.02818.40
5.5.330.0060.02618.56
5.5.320.0030.02318.77
5.5.310.0050.03918.59
5.5.300.0070.03118.55
5.5.290.0030.04518.55
5.5.280.0030.05218.67
5.5.270.0090.04418.50
5.5.260.0060.04318.63
5.5.250.0030.04718.34
5.5.240.0090.04118.27
5.5.230.0070.04618.28
5.5.220.0070.04518.28
5.5.210.0100.03718.09
5.5.200.0100.03818.24
5.5.190.0080.04318.23
5.5.180.0050.04718.33
5.5.170.0100.00715.36
5.5.160.0030.04618.26
5.5.150.0100.04318.14
5.5.140.0080.04318.16
5.5.130.0120.02518.11
5.5.120.0080.04518.16
5.5.110.0080.04818.21
5.5.100.0120.03718.31
5.5.90.0070.03518.20
5.5.80.0050.04518.09
5.5.70.0040.05118.22
5.5.60.0110.04018.26
5.5.50.0070.04217.96
5.5.40.0060.04418.13
5.5.30.0100.04018.30
5.5.20.0070.04118.21
5.5.10.0070.04418.15
5.5.00.0070.04018.20
5.4.450.0070.02015.96
5.4.440.0070.04315.87
5.4.430.0110.04116.22
5.4.420.0050.04216.03
5.4.410.0140.03215.95
5.4.400.0060.02715.75
5.4.390.0080.04716.08
5.4.380.0100.04015.79
5.4.370.0070.04515.85
5.4.360.0030.03315.82
5.4.350.0100.04115.73
5.4.340.0030.04015.71
5.4.330.0090.00311.96
5.4.320.0080.03815.94
5.4.310.0100.04016.03
5.4.300.0070.03915.87
5.4.290.0080.02315.77
5.4.280.0070.03715.83
5.4.270.0100.03315.93
5.4.260.0080.03815.96
5.4.250.0080.03915.87
5.4.240.0070.03215.86
5.4.230.0070.02715.75
5.4.220.0120.02315.86
5.4.210.0080.03915.79
5.4.200.0030.04515.90
5.4.190.0080.04015.68
5.4.180.0050.04015.64
5.4.170.0070.04215.80
5.4.160.0070.03515.65
5.4.150.0030.04215.74
5.4.140.0070.03814.56
5.4.130.0080.03314.45
5.4.120.0010.04314.51
5.4.110.0050.04014.52
5.4.100.0030.04014.64
5.4.90.0070.04014.61
5.4.80.0050.04214.49
5.4.70.0100.03714.48
5.4.60.0060.04014.68
5.4.50.0080.03014.71
5.4.40.0050.03614.50
5.4.30.0030.04614.40
5.4.20.0130.03314.40
5.4.10.0050.03314.46
5.4.00.0030.04514.18
5.3.290.0050.02812.41
5.3.280.0090.03512.36
5.3.270.0060.04112.33
5.3.260.0050.04512.28
5.3.250.0050.04012.34
5.3.240.0070.03812.34
5.3.230.0020.04212.21
5.3.220.0040.02812.33
5.3.210.0030.03812.20
5.3.200.0070.04012.31
5.3.190.0070.04112.17
5.3.180.0070.03212.42
5.3.170.0050.03812.32
5.3.160.0070.03712.38
5.3.150.0020.02812.40
5.3.140.0050.03012.38
5.3.130.0070.02512.43
5.3.120.0060.03912.34
5.3.110.0080.03912.36
5.3.100.0050.04112.08
5.3.90.0030.04012.11
5.3.80.0070.04012.10
5.3.70.0010.03711.97
5.3.60.0030.03612.12
5.3.50.0070.03011.95
5.3.40.0110.03212.10
5.3.30.0030.04011.87
5.3.20.0080.03811.87
5.3.10.0020.04511.74
5.3.00.0040.04011.71
5.2.170.0070.06311.05
5.2.160.0100.05011.09
5.2.150.0030.05711.07
5.2.140.0070.06311.30
5.2.130.0030.05311.06
5.2.120.0100.05711.01
5.2.110.0030.06011.16
5.2.100.0100.05711.09
5.2.90.0030.06011.16
5.2.80.0100.05711.05
5.2.70.0070.06310.88
5.2.60.0030.03710.98
5.2.50.0000.06310.96
5.2.40.0070.06011.05
5.2.30.0100.05710.91
5.2.20.0100.05310.96
5.2.10.0070.06010.81
5.2.00.0100.05310.79
5.1.60.0070.05010.07
5.1.50.0030.0379.93
5.1.40.0030.0509.92
5.1.30.0030.06010.33
5.1.20.0030.05310.35
5.1.10.0100.04710.01
5.1.00.0000.0409.97
5.0.50.0030.0308.48
5.0.40.0030.0338.43
5.0.30.0070.0608.16
5.0.20.0030.0438.27
5.0.10.0030.0338.32
5.0.00.0000.0638.21
4.4.90.0000.0377.51
4.4.80.0000.0377.51
4.4.70.0000.0277.51
4.4.60.0070.0277.51
4.4.50.0030.0207.51
4.4.40.0100.0477.51
4.4.30.0070.0277.51
4.4.20.0170.0207.51
4.4.10.0000.0277.51
4.4.00.0030.0577.51
4.3.110.0000.0377.51
4.3.100.0000.0337.51
4.3.90.0070.0277.51
4.3.80.0030.0537.51
4.3.70.0000.0407.51
4.3.60.0000.0337.51
4.3.50.0100.0237.51
4.3.40.0030.0507.51
4.3.30.0000.0377.51
4.3.20.0030.0377.51
4.3.10.0000.0377.51
4.3.00.0000.0277.51

preferences:
32.7 ms | 401 KiB | 5 Q