3v4l.org

run code in 300+ PHP versions simultaneously
<?php $var = 'ABCDEFGH:/MNRPQR/'; echo "Original: $var<hr />\n"; /* These two examples replace all of $var with 'bob'. */ echo substr_replace($var, 'bob', 0) . "<br />\n"; echo substr_replace($var, 'bob', 0, strlen($var)) . "<br />\n"; /* Insert 'bob' right at the beginning of $var. */ echo substr_replace($var, 'bob', 0, 0) . "<br />\n"; /* These next two replace 'MNRPQR' in $var with 'bob'. */ echo substr_replace($var, 'bob', 10, -1) . "<br />\n"; echo substr_replace($var, 'bob', -7, -1) . "<br />\n"; /* Delete 'MNRPQR' from $var. */ echo substr_replace($var, '******', 10, -1) . "<br />\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)
8.3.60.0140.01116.46
8.3.50.0080.01121.98
8.3.40.0050.01018.53
8.3.30.0110.00419.02
8.3.20.0000.00720.04
8.3.10.0040.00423.38
8.3.00.0050.00319.26
8.2.180.0110.00418.31
8.2.170.0110.00422.96
8.2.160.0140.00020.38
8.2.150.0050.00324.18
8.2.140.0040.00424.66
8.2.130.0110.00726.16
8.2.120.0050.00322.26
8.2.110.0030.00621.98
8.2.100.0080.00417.91
8.2.90.0000.00817.72
8.2.80.0070.00019.27
8.2.70.0000.00818.04
8.2.60.0030.00517.93
8.2.50.0000.01018.10
8.2.40.0030.00620.42
8.2.30.0050.00218.03
8.2.20.0000.00817.54
8.2.10.0040.00417.92
8.2.00.0000.01017.55
8.1.280.0140.00025.92
8.1.270.0040.00423.96
8.1.260.0080.00026.35
8.1.250.0000.00828.09
8.1.240.0000.01219.14
8.1.230.0040.00720.91
8.1.220.0040.00417.74
8.1.210.0050.00518.77
8.1.200.0050.00317.13
8.1.190.0060.00317.35
8.1.180.0080.00018.10
8.1.170.0030.00518.56
8.1.160.0000.00722.04
8.1.150.0060.00318.62
8.1.140.0000.00717.43
8.1.130.0070.00017.89
8.1.120.0000.00717.41
8.1.110.0000.00717.43
8.1.100.0030.00717.49
8.1.90.0040.00417.47
8.1.80.0030.00517.41
8.1.70.0070.00017.38
8.1.60.0070.00017.59
8.1.50.0000.00817.41
8.1.40.0060.00317.56
8.1.30.0050.00317.57
8.1.20.0040.00417.64
8.1.10.0000.00717.51
8.1.00.0040.00417.48
8.0.300.0000.00820.02
8.0.290.0050.00216.63
8.0.280.0040.00418.43
8.0.270.0000.00717.24
8.0.260.0040.00417.15
8.0.250.0000.00716.98
8.0.240.0030.00316.89
8.0.230.0030.00316.93
8.0.220.0050.00216.75
8.0.210.0030.00316.92
8.0.200.0030.00316.93
8.0.190.0000.00816.91
8.0.180.0070.00016.94
8.0.170.0030.00516.86
8.0.160.0000.00716.85
8.0.150.0000.00716.77
8.0.140.0070.00016.84
8.0.130.0030.00313.35
8.0.120.0040.00416.70
8.0.110.0040.00416.70
8.0.100.0050.00316.76
8.0.90.0070.00016.71
8.0.80.0090.00616.88
8.0.70.0040.00416.73
8.0.60.0040.00416.95
8.0.50.0000.00716.85
8.0.30.0050.01617.03
8.0.20.0050.01517.40
8.0.10.0050.00216.92
8.0.00.0070.01116.72
7.4.330.0060.00015.00
7.4.320.0030.00316.53
7.4.300.0040.00416.28
7.4.290.0030.00316.51
7.4.280.0000.00716.41
7.4.270.0040.00416.53
7.4.260.0000.00716.30
7.4.250.0070.00016.39
7.4.240.0020.00516.51
7.4.230.0030.00316.59
7.4.220.0070.01116.50
7.4.210.0080.00716.54
7.4.200.0040.00416.27
7.4.190.0000.00816.59
7.4.160.0030.01216.39
7.4.150.0100.00617.40
7.4.140.0080.01017.86
7.4.130.0070.01016.37
7.4.120.0130.00516.44
7.4.110.0150.00316.39
7.4.100.0070.01716.32
7.4.90.0030.01316.50
7.4.80.0140.01019.39
7.4.70.0040.01116.37
7.4.60.0030.01216.32
7.4.50.0000.00916.29
7.4.40.0070.01122.77
7.4.30.0050.01516.52
7.4.00.0040.01314.90
7.3.330.0000.00613.09
7.3.320.0030.00313.18
7.3.310.0000.00716.12
7.3.300.0070.00016.16
7.3.290.0100.00616.31
7.3.280.0110.00716.28
7.3.270.0060.01217.40
7.3.260.0030.01316.54
7.3.250.0140.00516.46
7.3.240.0150.00916.30
7.3.230.0090.01216.46
7.3.210.0170.00316.28
7.3.200.0120.00619.39
7.3.190.0130.00816.23
7.3.180.0100.01016.32
7.3.170.0050.01016.46
7.3.160.0070.01616.48
7.3.120.0090.00714.93
7.3.110.0090.00914.87
7.3.100.0080.00914.70
7.3.90.0070.00714.95
7.3.80.0060.00714.74
7.3.70.0030.01414.76
7.3.60.0060.00714.66
7.3.50.0070.00614.72
7.3.40.0040.00814.86
7.3.30.0050.00814.78
7.3.20.0050.01016.64
7.3.10.0090.00516.48
7.3.00.0090.00616.61
7.2.330.0120.00916.34
7.2.320.0070.01416.64
7.2.310.0090.00916.47
7.2.300.0120.00316.30
7.2.290.0120.00616.70
7.2.250.0090.00814.70
7.2.240.0060.01115.08
7.2.230.0030.01015.11
7.2.220.0090.00415.09
7.2.210.0070.01014.93
7.2.200.0070.00814.91
7.2.190.0080.00614.89
7.2.180.0110.00515.00
7.2.170.0070.00915.07
7.2.160.0030.00814.83
7.2.150.0060.00616.77
7.2.140.0070.00716.64
7.2.130.0050.01516.60
7.2.120.0020.01616.71
7.2.110.0050.01116.79
7.2.100.0020.00916.82
7.2.90.0060.00616.89
7.2.80.0030.01016.79
7.2.70.0100.00416.90
7.2.60.0060.00816.76
7.2.50.0030.00816.87
7.2.40.0040.00716.69
7.2.30.0070.00516.90
7.2.20.0080.00716.75
7.2.10.0100.00616.72
7.2.00.0080.00517.50
7.1.330.0070.00915.70
7.1.320.0040.00816.03
7.1.310.0020.01415.78
7.1.300.0050.00815.97
7.1.290.0100.00415.81
7.1.280.0030.01115.83
7.1.270.0060.00715.49
7.1.260.0050.00915.73
7.1.250.0040.00715.64
7.1.240.0090.00715.71
7.1.230.0110.00215.67
7.1.220.0020.00915.72
7.1.210.0020.00915.74
7.1.200.0040.00515.73
7.1.190.0070.00715.73
7.1.180.0080.00415.56
7.1.170.0100.00315.88
7.1.160.0040.00715.82
7.1.150.0110.00415.59
7.1.140.0070.00515.64
7.1.130.0030.00715.64
7.1.120.0060.00715.58
7.1.110.0070.00315.90
7.1.100.0060.00916.56
7.1.90.0080.00515.68
7.1.80.0060.00315.65
7.1.70.0040.00716.15
7.1.60.0040.01016.98
7.1.50.0040.01116.06
7.1.40.0070.00415.76
7.1.30.0050.01015.85
7.1.20.0030.01015.77
7.1.10.0160.00215.87
7.1.00.0040.03017.96
7.0.330.0070.00815.33
7.0.320.0060.00515.48
7.0.310.0050.00815.26
7.0.300.0070.00715.34
7.0.290.0070.00715.20
7.0.280.0080.00515.29
7.0.270.0020.00915.02
7.0.260.0030.00815.23
7.0.250.0020.01015.42
7.0.240.0080.00615.25
7.0.230.0050.00515.47
7.0.220.0060.00415.28
7.0.210.0050.00715.19
7.0.200.0020.00815.69
7.0.190.0040.00915.38
7.0.180.0050.01015.27
7.0.170.0060.00715.49
7.0.160.0070.00915.28
7.0.150.0050.00715.30
7.0.140.0010.03117.57
7.0.130.0070.00515.28
7.0.120.0060.00815.39
7.0.110.0060.00615.40
7.0.100.0060.00515.34
7.0.90.0050.00915.35
7.0.80.0030.01115.26
7.0.70.0070.00715.31
7.0.60.0040.02816.89
7.0.50.0060.02016.15
7.0.40.0080.03015.70
7.0.30.0210.02115.75
7.0.20.0130.03315.74
7.0.10.0060.02915.64
7.0.00.0060.03115.57
5.6.400.0080.00614.20
5.6.390.0030.01014.15
5.6.380.0080.00414.22
5.6.370.0020.01114.39
5.6.360.0010.01214.37
5.6.350.0040.00714.42
5.6.340.0080.00514.22
5.6.330.0070.00514.30
5.6.320.0040.00714.20
5.6.310.0020.01114.18
5.6.300.0030.01014.42
5.6.290.0050.01014.12
5.6.280.0040.03116.36
5.6.270.0040.01114.29
5.6.260.0080.00514.41
5.6.250.0090.00514.45
5.6.240.0000.01414.31
5.6.230.0060.00614.32
5.6.220.0020.01014.30
5.6.210.0090.02916.40
5.6.200.0040.01815.58
5.6.190.0090.03116.31
5.6.180.0220.02916.24
5.6.170.0130.03016.20
5.6.160.0050.02016.31
5.6.150.0050.02715.50
5.6.140.0100.02615.47
5.6.130.0060.02115.65
5.6.120.0060.02816.64
5.6.110.0080.02816.48
5.6.100.0080.02916.54
5.6.90.0050.03516.45
5.6.80.0120.02216.31
5.6.70.0080.00414.18
5.6.60.0070.00714.19
5.6.50.0060.00713.92
5.6.40.0020.00814.21
5.6.30.0050.00914.14
5.6.20.0070.00714.19
5.6.10.0070.00914.44
5.6.00.0060.00614.06
5.5.380.0050.00712.50
5.5.370.0030.00712.80
5.5.360.0040.00912.65
5.5.350.0040.02915.20
5.5.340.0070.01814.21
5.5.330.0060.03415.30
5.5.320.0060.03115.23
5.5.310.0120.01815.06
5.5.300.0030.01714.41
5.5.290.0040.03114.46
5.5.280.0040.01815.26
5.5.270.0060.02015.46
5.5.260.0060.02015.32
5.5.250.0060.02715.16
5.5.240.0150.01815.04
5.5.230.0040.00712.40
5.5.220.0030.00512.57
5.5.210.0100.00212.46
5.5.200.0040.00812.35
5.5.190.0020.01012.28
5.5.180.0040.01012.25
5.5.170.0070.00712.42
5.5.160.0060.00612.54
5.5.150.0070.00612.29
5.5.140.0050.00712.49
5.5.130.0050.01012.55
5.5.120.0040.00812.34
5.5.110.0050.01012.56
5.5.100.0020.00912.59
5.5.90.0080.00512.53
5.5.80.0080.00812.54
5.5.70.0100.00712.29
5.5.60.0080.00912.65
5.5.50.0080.00812.71
5.5.40.0120.00912.62
5.5.30.0200.00312.27
5.5.20.0200.00512.41
5.5.10.0160.00712.71
5.5.00.0120.00712.59
5.4.450.0200.01913.81
5.4.440.0090.02013.72
5.4.430.0130.01613.86
5.4.420.0160.01413.73
5.4.410.0150.02613.67
5.4.400.0200.01813.67
5.4.390.0190.02313.62
5.4.380.0190.02613.57
5.4.370.0150.02313.60
5.4.360.0150.02113.49
5.4.350.0190.02813.57
5.4.340.0160.02613.67
5.4.330.0100.00010.80
5.4.320.0140.03013.51
5.4.310.0180.02213.66
5.4.300.0150.02913.53
5.4.290.0200.02413.52
5.4.280.0200.01913.69
5.4.270.0110.02113.48
5.4.260.0160.02113.62
5.4.250.0100.02213.52
5.4.240.0130.01613.53
5.4.230.0160.02313.56
5.4.220.0160.02413.57
5.4.210.0150.02713.64
5.4.200.0170.02213.43
5.4.190.0130.02313.60
5.4.180.0160.02213.62
5.4.170.0190.01813.67
5.4.160.0170.01813.65
5.4.150.0210.01913.50
5.4.140.0150.02112.63
5.4.130.0210.01612.83
5.4.120.0110.01812.78
5.4.110.0230.01212.55
5.4.100.0160.02712.69
5.4.90.0170.02412.66
5.4.80.0150.02912.56
5.4.70.0160.01912.80
5.4.60.0160.02212.59
5.4.50.0180.01112.68
5.4.40.0190.02012.68
5.4.30.0140.02012.70
5.4.20.0170.01612.64
5.4.10.0110.01712.62
5.4.00.0190.02512.42
5.3.290.0210.02411.84
5.3.280.0140.02411.71
5.3.270.0190.02311.79
5.3.260.0210.02411.68
5.3.250.0180.02411.66
5.3.240.0200.02311.65
5.3.230.0180.01311.63
5.3.220.0160.02611.71
5.3.210.0170.01911.74
5.3.200.0170.02511.71
5.3.190.0190.02211.80
5.3.180.0130.01711.76
5.3.170.0130.02011.75
5.3.160.0130.02011.84
5.3.150.0170.01811.76
5.3.140.0130.01511.81
5.3.130.0160.02211.78
5.3.120.0180.01711.75
5.3.110.0130.01811.80
5.3.100.0150.01611.58
5.3.90.0200.01211.68
5.3.80.0140.01711.54
5.3.70.0110.01911.42
5.3.60.0110.01711.39
5.3.50.0120.01611.45
5.3.40.0100.01811.50
5.3.30.0200.01711.59
5.3.20.0130.01711.46
5.3.10.0130.01711.22
5.3.00.0140.01611.35
5.2.170.0130.02010.10
5.2.160.0100.02310.27
5.2.150.0210.02510.31
5.2.140.0180.03110.35
5.2.130.0120.02210.12
5.2.120.0130.02810.21
5.2.110.0170.01710.33
5.2.100.0130.02010.17
5.2.90.0170.02210.29
5.2.80.0180.03110.08
5.2.70.0200.03210.25
5.2.60.0100.02310.09
5.2.50.0220.02810.02
5.2.40.0180.01510.24
5.2.30.0160.01810.04
5.2.20.0200.02810.02
5.2.10.0150.03010.02
5.2.00.0080.0199.99
5.1.60.0100.0189.29
5.1.50.0150.0139.18
5.1.40.0120.0169.16
5.1.30.0120.0229.47
5.1.20.0190.0239.46
5.1.10.0130.0169.17
5.1.00.0120.0239.09
5.0.50.0120.0218.07
5.0.40.0090.0228.11
5.0.30.0100.0268.00
5.0.20.0100.0127.93
5.0.10.0110.0238.01
5.0.00.0100.0187.93
4.4.90.0090.0187.93
4.4.80.0080.0077.93
4.4.70.0080.0157.93
4.4.60.0160.0127.93
4.4.50.0060.0137.93
4.4.40.0070.0177.93
4.4.30.0050.0107.93
4.4.20.0080.0127.93
4.4.10.0030.0137.93
4.4.00.0070.0297.93
4.3.110.0090.0107.93
4.3.100.0100.0167.93
4.3.90.0090.0137.93
4.3.80.0050.0207.93
4.3.70.0050.0127.93
4.3.60.0100.0117.93
4.3.50.0080.0167.93
4.3.40.0090.0167.93
4.3.30.0030.0137.93
4.3.20.0050.0177.93
4.3.10.0050.0187.93
4.3.00.0020.0177.93

preferences:
42.02 ms | 401 KiB | 5 Q