3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr1 []= 'wello'; $var2 = 'woodbye wruel world'; $var3 = pack("n*", 0x77, 0x32 + 0x33, 0x6c, 0x6e-2, 0x6f); $var4 = pack('n*', 0x7765, 0x6c6c, 0x6f00); echo "var3 = $var3"; var_dump($var4); if ($var3 == $arr1[0]) {echo "$var3 == $arr1[0]"; } var_dump(poor_mans_strcmp('a', 'z')); var_dump(poor_mans_strcmp('q111f', 'fffff')); var_dump(poor_mans_strcmp($arr1, $var2)); var_dump(poor_mans_strcmp($arr1[0], $var2)); var_dump(poor_mans_strcmp($var2, $var2)); var_dump(poor_mans_strcmp($arr1[0], $var3)); var_dump(poor_mans_strcmp($arr1[0], $var4)); function poor_mans_strcmp($str1, $str2) { $result = 0; $str3 = 'a' . $str1; $str4 = 'a' . $str2; # strip null bytes to make it binary safe! $str3 = str_replace(chr(0), '', $str3); $str4 = str_replace(chr(0), '', $str4); var_dump($str3, $str4); if ($str3 < $str4) { $result = -1; } if ($str3 > $str4) { $result = 1; } return $result; }

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)
8.3.60.0110.00716.75
8.3.50.0140.01222.88
8.3.40.0200.00318.89
8.3.30.0030.01219.25
8.3.20.0070.00020.16
8.3.10.0080.00023.66
8.3.00.0040.00419.51
8.2.180.0120.00316.63
8.2.170.0090.00622.96
8.2.160.0040.01120.57
8.2.150.0040.00424.18
8.2.140.0000.00824.66
8.2.130.0050.00326.16
8.2.120.0080.00021.02
8.2.110.0030.00720.80
8.2.100.0110.00017.97
8.2.90.0040.00418.28
8.2.80.0000.00818.34
8.2.70.0050.00317.50
8.2.60.0090.00017.75
8.2.50.0000.00817.63
8.2.40.0050.00318.28
8.2.30.0040.00418.02
8.2.20.0000.00717.64
8.2.10.0050.00218.05
8.2.00.0040.00417.85
8.1.280.0140.00725.92
8.1.270.0080.00023.88
8.1.260.0040.00426.35
8.1.250.0000.00828.09
8.1.240.0050.00519.06
8.1.230.0090.00322.80
8.1.220.0040.00417.74
8.1.210.0040.00418.77
8.1.200.0090.00017.35
8.1.190.0030.00717.25
8.1.180.0040.00418.10
8.1.170.0080.00018.51
8.1.160.0040.00421.95
8.1.150.0070.00018.89
8.1.140.0000.00817.47
8.1.130.0070.00017.78
8.1.120.0040.00417.46
8.1.110.0080.00017.37
8.1.100.0040.00417.48
8.1.90.0030.00317.44
8.1.80.0040.00417.46
8.1.70.0000.00817.51
8.1.60.0000.00817.64
8.1.50.0040.00417.43
8.1.40.0070.00017.53
8.1.30.0040.00417.49
8.1.20.0000.00817.68
8.1.10.0000.00717.56
8.1.00.0040.00417.52
8.0.300.0000.00720.07
8.0.290.0050.00316.75
8.0.280.0030.00318.39
8.0.270.0000.00717.20
8.0.260.0000.00817.27
8.0.250.0000.00717.01
8.0.240.0030.00616.93
8.0.230.0080.00017.10
8.0.220.0030.00316.81
8.0.210.0050.00216.99
8.0.200.0030.00317.07
8.0.190.0000.00817.01
8.0.180.0050.00316.85
8.0.170.0030.00516.91
8.0.160.0030.00316.96
8.0.150.0040.00416.86
8.0.140.0080.00016.88
8.0.130.0060.00013.42
8.0.120.0000.00817.02
8.0.110.0030.00517.02
8.0.100.0050.00216.96
8.0.90.0000.00716.80
8.0.80.0090.00617.03
8.0.70.0040.00416.79
8.0.60.0040.00416.96
8.0.50.0040.00416.82
8.0.30.0100.00917.09
8.0.20.0080.01217.40
8.0.10.0030.00517.10
8.0.00.0110.00816.67
7.4.330.0060.00015.14
7.4.320.0000.00616.67
7.4.300.0050.00316.46
7.4.290.0000.00716.53
7.4.280.0050.00316.56
7.4.270.0000.00716.67
7.4.260.0040.00416.53
7.4.250.0000.00716.50
7.4.240.0050.00216.57
7.4.230.0050.00516.59
7.4.220.0090.00916.73
7.4.210.0060.00916.64
7.4.200.0040.00416.64
7.4.160.0150.00016.64
7.4.150.0190.00617.40
7.4.140.0090.01117.86
7.4.130.0100.00816.65
7.4.120.0080.00916.51
7.4.110.0130.00316.51
7.4.100.0130.00616.44
7.4.90.0060.01216.40
7.4.80.0140.00319.39
7.4.70.0130.00516.54
7.4.60.0040.01316.36
7.4.50.0030.00516.35
7.4.40.0100.00716.47
7.4.30.0090.00616.70
7.4.00.0080.00815.04
7.3.330.0030.00313.32
7.3.320.0030.00313.25
7.3.310.0000.00816.49
7.3.300.0000.00716.37
7.3.290.0070.01016.52
7.3.280.0110.00916.42
7.3.270.0090.00917.40
7.3.260.0160.00316.37
7.3.250.0070.01216.58
7.3.240.0150.00316.63
7.3.230.0080.01016.64
7.3.210.0090.01716.37
7.3.200.0170.00719.39
7.3.190.0140.00716.53
7.3.180.0070.01016.35
7.3.170.0070.01016.69
7.3.160.0150.00616.62
7.2.330.0070.01316.61
7.2.320.0190.00016.87
7.2.310.0090.01116.84
7.2.300.0100.00616.76
7.2.290.0070.01016.95
7.1.200.0030.00915.82
7.1.70.0030.01017.18
7.1.60.0100.01319.46
7.1.50.0030.01716.84
7.1.00.0070.07022.32
7.0.200.0030.00616.83
7.0.140.0030.07021.97
7.0.120.0070.07021.97
7.0.110.0030.07722.16
7.0.100.0100.05322.17
7.0.90.0030.07721.97
7.0.80.0070.05722.17
7.0.70.0000.07722.04
7.0.60.0070.07022.05
7.0.50.0100.06722.06
7.0.40.0030.06722.04
7.0.30.0030.07322.07
7.0.20.0000.07322.17
7.0.10.0030.07322.14
7.0.00.0100.07022.11
5.6.280.0030.07721.16
5.6.260.0000.07720.98
5.6.250.0070.07020.84
5.6.240.0130.06720.76
5.6.230.0100.07021.13
5.6.220.0030.05320.79
5.6.210.0030.07021.08
5.6.200.0000.08021.02
5.6.190.0030.07721.09
5.6.180.0030.07320.76
5.6.170.0100.06321.06
5.6.160.0030.07021.09
5.6.150.0030.07021.05
5.6.140.0030.07720.80
5.6.130.0000.07720.97
5.6.120.0030.07320.85
5.6.110.0030.07020.83
5.6.100.0030.07720.93
5.6.90.0000.05720.82
5.6.80.0030.07020.47
5.6.70.0070.06720.21
5.6.60.0070.05720.38
5.6.50.0000.07320.14
5.6.40.0130.06020.10
5.6.30.0000.07720.38
5.6.20.0100.06720.45
5.6.10.0100.05320.20
5.6.00.0030.05720.42
5.5.380.0030.07017.60
5.5.370.0000.07317.70
5.5.360.0070.07017.68
5.5.350.0030.07017.55
5.5.340.0070.07018.13
5.5.330.0000.07318.26
5.5.320.0000.07318.11
5.5.310.0000.07318.07
5.5.300.0000.06318.05
5.5.290.0100.05718.09
5.5.280.0000.07718.05
5.5.270.0000.08018.12
5.5.260.0070.07317.91
5.5.250.0000.07717.86
5.5.240.0000.06317.49
5.5.230.0000.07317.31
5.5.220.0000.07317.21
5.5.210.0000.07317.31
5.5.200.0070.06017.29
5.5.190.0030.06017.48
5.5.180.0070.07017.48
5.5.160.0030.06717.41
5.5.150.0070.06317.45
5.5.140.0030.06317.61
5.5.130.0030.06717.48
5.5.120.0100.06317.60
5.5.110.0070.06717.48
5.5.100.0030.06317.48
5.5.90.0100.05717.47
5.5.80.0000.06717.21
5.5.70.0000.07017.29
5.5.60.0030.05717.47
5.5.50.0030.06317.17
5.5.40.0030.06717.34
5.5.30.0030.05317.07
5.5.20.0070.05017.46
5.5.10.0030.07017.35
5.5.00.0000.07017.46
5.4.450.0000.06719.51
5.4.440.0030.07319.41
5.4.430.0070.06719.28
5.4.420.0030.07019.50
5.4.410.0070.06319.42
5.4.400.0000.05719.14
5.4.390.0000.07719.18
5.4.380.0030.06719.19
5.4.370.0000.07019.21
5.4.360.0030.06318.99
5.4.350.0030.06719.33
5.4.340.0100.06018.95
5.4.320.0030.06719.14
5.4.310.0030.06719.00
5.4.300.0030.05318.93
5.4.290.0030.06719.21
5.4.280.0000.07319.09
5.4.270.0070.06718.98
5.4.260.0070.06718.97
5.4.250.0000.07018.98
5.4.240.0030.06719.32
5.4.230.0070.05318.98
5.4.220.0000.07318.97
5.4.210.0030.06719.02
5.4.200.0070.06319.32
5.4.190.0000.05019.13
5.4.180.0000.07018.93
5.4.170.0030.06318.99
5.4.160.0000.07319.15
5.4.150.0130.05319.11
5.4.140.0070.05016.53
5.4.130.0100.06016.38
5.4.120.0000.06716.35
5.4.110.0000.07016.55
5.4.100.0030.05716.47
5.4.90.0030.05316.36
5.4.80.0030.06316.29
5.4.70.0000.06016.45
5.4.60.0030.06316.47
5.4.50.0030.06316.34
5.4.40.0000.06716.43
5.4.30.0030.06316.53
5.4.20.0000.06716.40
5.4.10.0000.06016.39
5.4.00.0030.05015.98
5.3.290.0070.05714.77
5.3.280.0030.06714.59
5.3.270.0000.07014.64
5.3.260.0000.07314.64
5.3.250.0000.07014.64
5.3.240.0030.05714.64
5.3.230.0030.06314.73
5.3.220.0000.06714.57
5.3.210.0030.06714.81
5.3.200.0000.07014.59
5.3.190.0030.06714.57
5.3.180.0000.06014.56
5.3.170.0030.06714.59
5.3.160.0000.07014.59
5.3.150.0070.06314.55
5.3.140.0030.05714.57
5.3.130.0030.07014.70
5.3.120.0070.06714.52
5.3.110.0000.07314.69
5.3.100.0000.07014.14
5.3.90.0030.06714.03
5.3.80.0000.05314.04
5.3.70.0000.05014.04
5.3.60.0070.05314.02
5.3.50.0070.06014.11
5.3.40.0030.06313.82
5.3.30.0070.06013.93
5.3.20.0030.05713.80
5.3.10.0000.04313.63
5.3.00.0000.04313.73
5.2.170.0000.04711.17
5.2.160.0000.04311.18
5.2.150.0000.05711.16
5.2.140.0030.05011.23
5.2.130.0030.05011.13
5.2.120.0030.03311.11
5.2.110.0030.02711.24
5.2.100.0000.03311.13
5.2.90.0030.05011.25
5.2.80.0030.05711.13
5.2.70.0030.05711.06
5.2.60.0030.05711.07
5.2.50.0030.05311.11
5.2.40.0000.04711.00
5.2.30.0100.05010.95
5.2.20.0070.05010.94
5.2.10.0000.04710.73
5.2.00.0070.05010.86
5.1.60.0030.04310.28
5.1.50.0030.04310.28
5.1.40.0030.04310.28
5.1.30.0000.05010.33
5.1.20.0000.05010.36
5.1.10.0030.04710.28
5.1.00.0000.04010.28
5.0.50.0030.04010.28
5.0.40.0030.03710.28
5.0.30.0030.05010.28
5.0.20.0100.02710.28
5.0.10.0000.04010.28
5.0.00.0000.05310.28
4.4.90.0000.03010.28
4.4.80.0030.02710.28
4.4.70.0000.03010.28
4.4.60.0000.03010.28
4.4.50.0000.03010.28
4.4.40.0000.04310.28
4.4.30.0000.03310.28
4.4.20.0030.03010.28
4.4.10.0030.02010.28
4.4.00.0000.04710.28
4.3.110.0030.03010.28
4.3.100.0000.03010.28
4.3.90.0000.03010.28
4.3.80.0000.04010.28
4.3.70.0030.02310.28
4.3.60.0000.03010.28
4.3.50.0030.02310.28
4.3.40.0000.04710.28
4.3.30.0030.02710.28
4.3.20.0000.03310.28
4.3.10.0070.02710.28
4.3.00.0000.03010.28

preferences:
42.01 ms | 401 KiB | 5 Q