3v4l.org

run code in 300+ PHP versions simultaneously
<?php $first = [ 'c' => 'd', 'm' => 'n', ]; $second = [ 'C' => 'd', // first encounter, qualifying key, qualifying value (['c' => 'd'] is removed from result) 'c' => 'D', // doesn't matter 'm' => 'N', // first encounter, qualifying key, disqualifying value 'M' => 'n', // this should eliminate ['m' => 'n'], but doesn't get the chance ]; /* behavior discovered while crafting this answer: * https://stackoverflow.com/a/70817582/2943403 */ var_export( array_diff_uassoc( $first, $second, 'strcasecmp' ) ); // removes first-occurring, case-insensitive key, case-sensitive value

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)
8.3.70.0040.01116.58
8.3.60.0130.00718.18
8.3.50.0100.00620.21
8.3.40.0100.01019.97
8.3.30.0090.00618.51
8.3.20.0000.00824.18
8.3.10.0000.00824.66
8.3.00.0040.00426.16
8.2.190.0040.01818.18
8.2.180.0120.00625.92
8.2.170.0110.00718.83
8.2.160.0100.00322.96
8.2.150.0050.00225.66
8.2.140.0040.00424.66
8.2.130.0000.00826.16
8.2.120.0040.00420.91
8.2.110.0040.00422.24
8.2.100.0060.00617.72
8.2.90.0040.00418.89
8.2.80.0030.00617.97
8.2.70.0080.00017.63
8.2.60.0000.00817.50
8.2.50.0040.00417.98
8.2.40.0080.00017.88
8.2.30.0040.00417.99
8.2.20.0070.00020.42
8.2.10.0000.00817.66
8.2.00.0000.00719.09
8.1.280.0100.00725.92
8.1.270.0060.00323.99
8.1.260.0040.00426.35
8.1.250.0080.00028.09
8.1.240.0060.00323.83
8.1.230.0070.00320.91
8.1.220.0040.00417.75
8.1.210.0000.00818.77
8.1.200.0060.00317.35
8.1.190.0030.00517.13
8.1.180.0040.00418.10
8.1.170.0040.00417.62
8.1.160.0070.00018.84
8.1.150.0050.00318.58
8.1.140.0000.00717.39
8.1.130.0000.00718.74
8.1.120.0030.00517.41
8.1.110.0000.00717.40
8.1.100.0040.00417.42
8.1.90.0000.00817.29
8.1.80.0090.00017.45
8.1.70.0000.00817.29
8.1.60.0000.00817.57
8.1.50.0060.00317.36
8.1.40.0000.01217.36
8.1.30.0000.00817.57
8.1.20.0190.00617.61
8.1.10.0180.00317.37
8.1.00.0130.00517.36
8.0.300.0000.00718.77
8.0.290.0040.00416.63
8.0.280.0000.00718.30
8.0.270.0000.00716.70
8.0.260.0040.00418.26
8.0.250.0000.00716.88
8.0.240.0030.00516.77
8.0.230.0050.00316.79
8.0.220.0070.00016.80
8.0.210.0060.00316.80
8.0.200.0040.00416.95
8.0.190.0050.00216.90
8.0.180.0040.00416.86
8.0.170.0030.00616.89
8.0.160.0040.00416.70
8.0.150.0060.00516.73
8.0.140.0110.00416.75
8.0.130.0160.00616.68
8.0.120.0130.00416.84
8.0.110.0130.00316.80
8.0.100.0120.00216.74
8.0.90.0170.00016.78
8.0.80.0170.00316.82
8.0.70.0150.00416.71
8.0.60.0110.00616.80
8.0.50.0120.00316.71
8.0.30.0090.00916.79
8.0.20.0100.00416.74
8.0.10.0110.00216.95
8.0.00.0000.01216.90
7.4.330.0000.00515.55
7.4.320.0000.00616.43
7.4.300.0060.00016.53
7.4.290.0000.00716.50
7.4.280.0020.00516.53
7.4.270.0030.00816.36
7.4.260.0160.00416.45
7.4.250.0130.00516.44
7.4.240.0180.00116.46
7.4.230.0150.00816.37
7.4.220.0130.00416.48
7.4.210.0120.00716.42
7.4.200.0130.00716.52
7.4.190.0080.00616.51
7.4.180.0140.00316.37
7.4.160.0130.00616.54
7.4.150.0170.00216.48
7.4.140.0170.00416.32
7.4.130.0160.00516.27
7.4.120.0140.00716.27
7.4.110.0140.00616.28
7.4.100.0160.00616.34
7.4.90.0110.00516.29
7.4.80.0150.00216.27
7.4.70.0120.00516.22
7.4.60.0170.00316.27
7.4.50.0120.00416.20
7.4.40.0150.00216.18
7.4.30.0060.01016.29
7.4.20.0060.00416.32
7.4.10.0060.00416.23
7.4.00.0070.00416.31
7.3.330.0140.00716.16
7.3.320.0160.00516.19
7.3.310.0210.00016.27
7.3.300.0160.00416.17
7.3.290.0170.00415.98
7.3.280.0210.00016.20
7.3.270.0170.00316.19
7.3.260.0190.00016.12
7.3.250.0130.01016.18
7.3.240.0190.00415.95
7.3.230.0200.00016.22
7.3.220.0200.00015.91
7.3.210.0180.00616.14
7.3.200.0140.00716.09
7.3.190.0180.00516.16
7.3.180.0190.00016.20
7.3.170.0150.00316.10
7.3.160.0100.01016.16
7.3.150.0160.00515.91
7.3.140.0170.00315.96
7.3.130.0170.00415.98
7.3.120.0140.00616.13
7.3.110.0180.00316.06
7.3.100.0130.00916.05
7.3.90.0230.00316.41
7.3.80.0200.00415.98
7.3.70.0100.01116.25
7.3.60.0190.00516.20
7.3.50.0240.00016.23
7.3.40.0170.00616.09
7.3.30.0280.00016.14
7.3.20.0260.00416.16
7.3.10.0260.00316.16
7.3.00.0230.00316.02
7.2.340.0150.01115.96
7.2.330.0190.00416.07
7.2.320.0170.00916.25
7.2.310.0220.00415.97
7.2.300.0180.00516.27
7.2.290.0210.00516.04
7.2.280.0270.00015.96
7.2.270.0260.00016.14
7.2.260.0190.00816.19
7.2.250.0200.00516.14
7.2.240.0160.00716.27
7.2.230.0180.00916.22
7.2.220.0190.00716.21
7.2.210.0190.00815.96
7.2.200.0250.00016.21
7.2.190.0140.01116.34
7.2.180.0180.00816.05
7.2.170.0200.00716.41
7.2.160.0140.00916.29
7.2.150.0230.00416.13
7.2.140.0140.01316.33
7.2.130.0200.00516.58
7.2.120.0200.00616.42
7.2.110.0270.00316.57
7.2.100.0220.00016.39
7.2.90.0150.00816.44
7.2.80.0190.00516.39
7.2.70.0180.00316.42
7.2.60.0180.00316.44
7.2.50.0150.00716.30
7.2.40.0160.00616.23
7.2.30.0180.00416.51
7.2.20.0120.00816.58
7.2.10.0220.00016.32
7.2.00.0240.00016.52
7.1.330.0200.00015.57
7.1.320.0140.00615.52
7.1.310.0160.00415.59
7.1.300.0100.01015.42
7.1.290.0150.00415.51
7.1.280.0240.00015.56
7.1.270.0160.00415.50
7.1.260.0180.00315.52
7.1.250.0120.00615.24
7.1.240.0150.00915.23
7.1.230.0230.00015.43
7.1.220.0170.00315.35
7.1.210.0200.00015.45
7.1.200.0190.00415.50
7.1.190.0190.00015.33
7.1.180.0130.00615.32
7.1.170.0210.00015.20
7.1.160.0170.00315.47
7.1.150.0170.00215.33
7.1.140.0210.00015.46
7.1.130.0210.00015.44
7.1.120.0540.00017.29
7.1.110.0140.00516.99
7.1.100.0110.00817.23
7.1.90.0150.00517.22
7.1.80.0200.00017.14
7.1.70.0170.00317.09
7.1.60.0110.00817.27
7.1.50.0170.00317.03
7.1.40.0160.00417.13
7.1.30.0170.00317.19
7.1.20.0120.00717.27
7.1.10.0130.00517.13
7.1.00.0170.00417.24
7.0.330.0120.00616.68
7.0.320.0140.00316.64
7.0.310.0140.00816.84
7.0.300.0090.01316.86
7.0.290.0140.00616.66
7.0.280.0160.00316.96
7.0.270.0150.00417.00
7.0.260.0150.00416.97
7.0.250.0190.00317.04
7.0.240.0160.00817.05
7.0.230.0210.00016.87
7.0.220.0180.00616.89
7.0.210.0180.00416.72
7.0.200.0190.00516.81
7.0.190.0130.00716.85
7.0.180.0160.00817.06
7.0.170.0170.00317.02
7.0.160.0160.00416.87
7.0.150.0150.00916.84
7.0.140.0160.00516.87
7.0.130.0200.00416.88
7.0.120.0200.00317.04
7.0.110.0170.00317.04
7.0.100.0180.00316.75
7.0.90.0120.00816.94
7.0.80.0190.00016.66
7.0.70.0240.00016.87
7.0.60.0150.00716.92
7.0.50.0160.00316.79
7.0.40.0160.00316.71
7.0.30.0140.00516.96
7.0.20.0110.00616.91
7.0.10.0150.00516.95
7.0.00.0260.00716.92
5.6.400.0150.00415.50
5.6.390.0110.00915.67
5.6.380.0160.00215.75
5.6.370.0110.00715.51
5.6.360.0110.00715.61
5.6.350.0130.00615.42
5.6.340.0160.00315.66
5.6.330.0170.00315.73
5.6.320.0190.00315.50
5.6.310.0170.00315.50
5.6.300.0160.00515.37
5.6.290.0180.00415.72
5.6.280.0140.00715.63
5.6.270.0100.01015.65
5.6.260.0210.00315.73
5.6.250.0140.00715.41
5.6.240.0170.00415.73
5.6.230.0210.00015.69
5.6.220.0160.00615.78
5.6.210.0120.00815.65
5.6.200.0180.00315.86
5.6.190.0220.00015.68
5.6.180.0230.00015.79
5.6.170.0080.01215.68
5.6.160.0140.00715.88
5.6.150.0150.00515.83
5.6.140.0140.00515.49
5.6.130.0140.00715.77
5.6.120.0180.00315.62
5.6.110.0140.00715.53
5.6.100.0110.01115.54
5.6.90.0150.00615.73
5.6.80.0190.00015.47
5.6.70.0170.00615.57
5.6.60.0110.00715.61
5.6.50.0190.00015.70
5.6.40.0190.00015.67
5.6.30.0100.01015.72
5.6.20.0100.01015.50
5.6.10.0180.00515.46
5.6.00.0170.00315.50
5.5.380.0130.00615.70
5.5.370.0130.00715.87
5.5.360.0120.00815.66
5.5.350.0120.00615.51
5.5.340.0190.00315.39
5.5.330.0160.00015.54
5.5.320.0110.00615.77
5.5.310.0150.00415.55
5.5.300.0080.00815.57
5.5.290.0110.00815.76
5.5.280.0120.00515.75
5.5.270.0190.00315.52
5.5.260.0100.00515.70
5.5.250.0090.00915.69
5.5.240.0180.00215.65
5.5.230.0110.00815.71
5.5.220.0100.00715.44
5.5.210.0200.00015.90
5.5.200.0130.00315.31
5.5.190.0140.00315.31
5.5.180.0180.00015.38
5.5.170.0080.00815.32
5.5.160.0130.00415.45
5.5.150.0130.00415.42
5.5.140.0130.00315.34
5.5.130.0120.00815.34
5.5.120.0160.00015.25
5.5.110.0120.00515.46
5.5.100.0130.00515.57
5.5.90.0130.00415.54
5.5.80.0140.00515.38
5.5.70.0120.00615.35
5.5.60.0180.00315.50
5.5.50.0180.00015.40
5.5.40.0140.00315.38
5.5.30.0140.00515.58
5.5.20.0130.00315.62
5.5.10.0140.00415.68
5.5.00.0150.00315.75
5.4.450.0170.00012.38
5.4.440.0120.00312.53
5.4.430.0100.00312.51
5.4.420.0070.00712.41
5.4.410.0100.00312.55
5.4.400.0150.00012.25
5.4.390.0070.00712.29
5.4.380.0170.00012.36
5.4.370.0090.00412.40
5.4.360.0100.00312.31
5.4.350.0110.00412.29
5.4.340.0090.00612.30
5.4.330.0130.00312.58
5.4.320.0100.00512.55
5.4.310.0170.00012.42
5.4.300.0130.00512.50
5.4.290.0100.00512.34
5.4.280.0050.01012.58
5.4.270.0110.00412.55
5.4.260.0080.00612.41
5.4.250.0060.00912.43
5.4.240.0040.00912.58
5.4.230.0090.00512.22
5.4.220.0090.00512.08
5.4.210.0130.00312.04
5.4.200.0100.00512.08
5.4.190.0120.00412.23
5.4.180.0120.00312.39
5.4.170.0140.00012.44
5.4.160.0110.00412.26
5.4.150.0130.00012.16
5.4.140.0150.00012.28
5.4.130.0160.00012.19
5.4.120.0040.01112.39
5.4.110.0160.00012.46
5.4.100.0140.00012.48
5.4.90.0110.00412.33
5.4.80.0100.00512.38
5.4.70.0100.00312.38
5.4.60.0110.00212.36
5.4.50.0130.00012.45
5.4.40.0130.00012.33
5.4.30.0140.00312.47
5.4.20.0150.00012.38
5.4.10.0090.00612.39
5.4.00.0080.00512.38
5.3.290.0100.00312.88
5.3.280.0120.00012.75
5.3.270.0060.00612.64
5.3.260.0100.00012.68
5.3.250.0080.00312.81
5.3.240.0090.00312.79
5.3.230.0070.00712.45
5.3.220.0000.01312.45
5.3.210.0050.00812.75
5.3.200.0090.00212.56
5.3.190.0090.00312.55
5.3.180.0070.00712.79
5.3.170.0070.00713.00
5.3.160.0100.00512.73
5.3.150.0150.00012.93
5.3.140.0130.00212.95
5.3.130.0110.00312.97
5.3.120.0130.00412.61
5.3.110.0150.00212.87
5.3.100.0110.00312.95
5.3.90.0130.00013.02
5.3.80.0100.00312.82
5.3.70.0140.00012.64
5.3.60.0110.00412.59
5.3.50.0110.00412.63
5.3.40.0090.00612.66
5.3.30.0130.00012.52
5.3.20.0100.00312.47
5.3.10.0050.01012.57
5.3.00.0090.00612.59
5.2.170.0090.00311.61
5.2.160.0050.00711.62
5.2.150.0120.00011.83
5.2.140.0100.00011.84
5.2.130.0090.00211.57
5.2.120.0070.00411.58
5.2.110.0100.00011.82
5.2.100.0090.00311.61
5.2.90.0120.00011.86
5.2.80.0080.00411.55
5.2.70.0090.00311.65
5.2.60.0080.00411.67
5.2.50.0060.00711.79
5.2.40.0120.00011.70
5.2.30.0090.00211.51
5.2.20.0080.00311.62
5.2.10.0110.00011.55
5.2.00.0040.00811.24
5.1.60.0000.00910.64
5.1.50.0100.00010.82
5.1.40.0030.00610.94
5.1.30.0090.00310.82
5.1.20.0050.00510.94
5.1.10.0070.00310.66
5.1.00.0050.00510.50
5.0.50.0040.0049.95
5.0.40.0030.00610.02
5.0.30.0110.0009.96
5.0.20.0040.0049.95
5.0.10.0040.0049.95
5.0.00.0080.0009.95
4.4.90.0000.0059.95
4.4.80.0000.0069.95
4.4.70.0050.0009.95
4.4.60.0030.0039.95
4.4.50.0000.0059.95
4.4.40.0000.0059.95
4.4.30.0020.0029.95
4.4.20.0060.0009.95
4.4.10.0050.0009.95
4.4.00.0060.0009.95
4.3.110.0030.0029.95
4.3.100.0050.0009.95
4.3.90.0000.0059.95
4.3.80.0060.0009.95
4.3.70.0060.0009.95
4.3.60.0030.0039.95
4.3.50.0030.0029.95
4.3.40.0030.0029.95
4.3.30.0020.0029.95
4.3.20.0040.0009.95
4.3.10.0000.0039.95
4.3.00.0000.0049.95

preferences:
30.51 ms | 401 KiB | 5 Q