3v4l.org

run code in 300+ PHP versions simultaneously
<?php $utf8_str = "\xf0\x9f\x92\xa9"; $ret = ''; $length = mb_strlen($utf8_str, 'UTF-8'); for ($i = 0; $i < $length; $i++) { $char = mb_substr($utf8_str, $i, 1, 'UTF-8'); $l = strlen($char); if ($l <= 3) { $ret .= $char; } elseif ($l === 4) { $ret .= self::convert_char_to_cesu8($char); }// UTF-8で5文字以上になる文字はUnicodeとして不正なので無視(除去する) } $unko = $ret; var_dump($unko); $encode = json_encode($unko); var_dump($encode);

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)
8.3.60.0110.00716.88
8.3.50.0070.01016.29
8.3.40.0040.01118.79
8.3.30.0090.00618.96
8.3.20.0040.00420.34
8.3.10.0000.00823.66
8.3.00.0000.00819.79
8.2.180.0090.01316.75
8.2.170.0140.00022.96
8.2.160.0140.00320.38
8.2.150.0080.00024.18
8.2.140.0080.00024.66
8.2.130.0040.00426.16
8.2.120.0090.00017.38
8.2.110.0000.00922.18
8.2.100.0090.00317.75
8.2.90.0000.00719.23
8.2.80.0000.00817.97
8.2.70.0050.00317.63
8.2.60.0030.00517.91
8.2.50.0090.00018.07
8.2.40.0000.00919.27
8.2.30.0090.00018.07
8.2.20.0040.00417.75
8.2.10.0050.00218.13
8.2.00.0040.00517.97
8.1.280.0080.00825.92
8.1.270.0090.00020.23
8.1.260.0060.00326.35
8.1.250.0040.00428.09
8.1.240.0050.00522.52
8.1.230.0130.00017.42
8.1.220.0040.00417.74
8.1.210.0000.00818.77
8.1.200.0030.00617.36
8.1.190.0060.00317.23
8.1.180.0040.00418.10
8.1.170.0040.00418.59
8.1.160.0070.00021.97
8.1.150.0000.00818.84
8.1.140.0040.00417.28
8.1.130.0030.00317.65
8.1.120.0040.00417.45
8.1.110.0000.00717.25
8.1.100.0040.00417.40
8.1.90.0070.00017.45
8.1.80.0050.00217.27
8.1.70.0000.00717.37
8.1.60.0030.00617.63
8.1.50.0060.00317.49
8.1.40.0000.00917.48
8.1.30.0000.00817.79
8.1.20.0000.00817.76
8.1.10.0000.00717.52
8.1.00.0080.00017.60
8.0.300.0030.00618.77
8.0.290.0070.00016.75
8.0.280.0000.00718.46
8.0.270.0000.00717.19
8.0.260.0000.00817.27
8.0.250.0030.00517.04
8.0.240.0040.00417.05
8.0.230.0030.00317.05
8.0.220.0040.00417.02
8.0.210.0040.00416.98
8.0.200.0030.00317.04
8.0.190.0030.00316.99
8.0.180.0050.00316.88
8.0.170.0030.00616.98
8.0.160.0000.00716.97
8.0.150.0000.00716.89
8.0.140.0000.00716.94
8.0.130.0050.00013.40
8.0.120.0030.00516.98
8.0.110.0040.00416.98
8.0.100.0050.00216.94
8.0.90.0050.00317.01
8.0.80.0030.01616.89
8.0.70.0040.00417.00
8.0.60.0070.00016.87
8.0.50.0040.00416.84
8.0.30.0120.00817.18
8.0.20.0170.00417.40
8.0.10.0040.00417.02
8.0.00.0130.00716.69
7.4.330.0000.00515.13
7.4.320.0000.00716.38
7.4.300.0000.00616.63
7.4.290.0030.00316.57
7.4.280.0050.00316.50
7.4.270.0090.00016.50
7.4.260.0060.00316.62
7.4.250.0000.00716.47
7.4.240.0030.00516.49
7.4.230.0080.00016.65
7.4.220.0140.00316.55
7.4.210.0060.00816.45
7.4.200.0060.00316.61
7.4.160.0090.00616.61
7.4.150.0150.00317.40
7.4.140.0080.01617.86
7.4.130.0040.01516.52
7.4.120.0070.01216.64
7.4.110.0000.01716.66
7.4.100.0060.01616.59
7.4.90.0030.01416.52
7.4.80.0030.01419.39
7.4.70.0150.00316.53
7.4.60.0030.01416.49
7.4.50.0070.00016.64
7.4.40.0070.01516.48
7.4.30.0140.00716.48
7.4.10.0050.01215.07
7.4.00.0050.01214.88
7.3.330.0060.00013.39
7.3.320.0060.00013.30
7.3.310.0030.00316.45
7.3.300.0030.00316.43
7.3.290.0090.01116.41
7.3.280.0100.00816.39
7.3.270.0060.01217.40
7.3.260.0110.00616.39
7.3.240.0130.00516.30
7.3.230.0030.01816.42
7.3.210.0000.01816.35
7.3.200.0130.00416.38
7.3.190.0100.00716.22
7.3.180.0150.00616.58
7.3.170.0030.01316.59
7.3.160.0110.00716.50
7.3.130.0080.00814.97
7.3.120.0030.01214.71
7.3.110.0030.01415.09
7.3.100.0080.00514.77
7.3.90.0030.01214.86
7.3.80.0000.01415.02
7.3.70.0060.00614.85
7.3.60.0080.00714.73
7.3.50.0050.00614.94
7.3.40.0050.00614.70
7.3.30.0040.00814.79
7.3.20.0040.01116.71
7.3.10.0060.00816.50
7.3.00.0110.00316.63
7.2.330.0030.01516.59
7.2.320.0070.01816.55
7.2.310.0130.00416.77
7.2.300.0100.01416.63
7.2.290.0120.01216.43
7.2.260.0070.01214.97
7.2.250.0060.00915.04
7.2.240.0000.01215.18
7.2.230.0080.00615.03
7.2.220.0070.00814.83
7.2.210.0040.01115.08
7.2.200.0040.00914.93
7.2.190.0050.00814.97
7.2.180.0060.00714.78
7.2.170.0030.01114.88
7.2.160.0020.01215.05
7.2.150.0050.00916.90
7.2.140.0010.01216.79
7.2.130.0040.00716.78
7.2.120.0090.00717.02
7.2.110.0080.00616.88
7.2.100.0060.00916.94
7.2.90.0050.00816.95
7.2.80.0070.00716.75
7.2.70.0130.00416.92
7.2.60.0120.00616.64
7.2.50.0070.00616.70
7.2.40.0040.01117.01
7.2.30.0050.01016.91
7.2.20.0030.00916.84
7.2.10.0090.00516.81
7.2.00.0080.00817.67
7.1.330.0080.00715.76
7.1.320.0050.01115.85
7.1.310.0100.00415.95
7.1.300.0100.00515.88
7.1.290.0070.00615.87
7.1.280.0120.00215.93
7.1.270.0040.00515.69
7.1.260.0080.00715.85
7.1.250.0060.00415.88
7.1.240.0050.01015.63
7.1.230.0050.01015.89
7.1.220.0080.00615.74
7.1.210.0020.01215.83
7.1.200.0030.01115.81
7.1.190.0120.00615.77
7.1.180.0040.01315.78
7.1.170.0050.00615.65
7.1.160.0070.00715.91
7.1.150.0020.01315.74
7.1.140.0030.01015.78
7.1.130.0090.00515.78
7.1.120.0070.00915.80
7.1.110.0050.00815.90
7.1.100.0050.00816.69
7.1.90.0050.00915.82
7.1.80.0000.01215.92
7.1.70.0050.00716.19
7.1.60.0010.01317.00
7.1.50.0040.01216.35
7.1.40.0060.00515.61
7.1.30.0030.01015.80
7.1.20.0050.00715.88
7.1.10.0030.00915.81
7.1.00.0050.02918.03
7.0.330.0080.00315.53
7.0.320.0070.00515.23
7.0.310.0030.01015.45
7.0.300.0020.01015.34
7.0.290.0020.00915.56
7.0.280.0020.01015.39
7.0.270.0090.00515.47
7.0.260.0050.00815.46
7.0.250.0040.00515.33
7.0.240.0070.00415.50
7.0.230.0050.01015.59
7.0.220.0090.00315.43
7.0.210.0040.00515.47
7.0.200.0050.00715.86
7.0.190.0020.00915.21
7.0.180.0040.00715.38
7.0.170.0040.01115.54
7.0.160.0070.00715.52
7.0.150.0040.00715.40
7.0.140.0050.01015.32
7.0.130.0050.00615.55
7.0.120.0050.01115.41
7.0.110.0080.00715.49
7.0.100.0060.00715.43
7.0.90.0280.02316.92
7.0.80.0260.03116.94
7.0.70.0270.02917.05
7.0.60.0200.03116.96
7.0.50.0240.03117.23
7.0.40.0040.03415.65
7.0.30.0080.03115.65
7.0.20.0050.02815.62
7.0.10.0100.02815.68
7.0.00.0040.03315.74
5.6.400.0090.00414.31
5.6.390.0040.00914.48
5.6.380.0050.00814.33
5.6.370.0050.00714.44
5.6.360.0070.00814.32
5.6.350.0070.00714.30
5.6.340.0000.01214.10
5.6.330.0060.00814.47
5.6.320.0040.00814.34
5.6.310.0030.00614.36
5.6.300.0100.00314.47
5.6.290.0070.00514.36
5.6.280.0010.01916.59
5.6.270.0050.01014.46
5.6.260.0080.00514.44
5.6.250.0030.00814.47
5.6.240.0040.03316.40
5.6.230.0070.03516.45
5.6.220.0070.03116.47
5.6.210.0110.02816.31
5.6.200.0070.02916.55
5.6.190.0070.03016.66
5.6.180.0070.02116.49
5.6.170.0070.03216.69
5.6.160.0050.03316.55
5.6.150.0080.03216.61
5.6.140.0040.03216.57
5.6.130.0070.02316.52
5.6.120.0070.02916.48
5.6.110.0090.02716.52
5.6.100.0020.02516.49
5.6.90.0040.02216.60
5.6.80.0060.03216.28
5.6.70.0050.02316.35
5.6.60.0060.02916.21
5.6.50.0050.03116.26
5.6.40.0020.03116.23
5.6.30.0090.02516.30
5.6.20.0060.03116.37
5.6.10.0040.03216.25
5.6.00.0060.03216.35
5.5.380.0090.02616.35
5.5.370.0100.02816.23
5.5.360.0060.03216.23
5.5.350.0090.02916.31
5.5.340.0040.03016.31
5.5.330.0130.02416.50
5.5.320.0080.03016.32
5.5.310.0060.03316.31
5.5.300.0130.02416.36
5.5.290.0080.02516.40
5.5.280.0030.03616.49
5.5.270.0080.03116.35
5.5.260.0040.02616.36
5.5.250.0060.03216.38
5.5.240.0040.02416.22
5.5.230.0060.02216.02
5.5.220.0090.02715.97
5.5.210.0050.03016.10
5.5.200.0080.02916.13
5.5.190.0050.02116.14
5.5.180.0030.03216.14
5.5.170.0000.01414.12
5.5.160.0060.02015.98
5.5.150.0050.02316.20
5.5.140.0080.02815.98
5.5.130.0090.02316.12
5.5.120.0030.03416.09
5.5.110.0070.03016.22
5.5.100.0080.02816.10
5.5.90.0100.02515.94
5.5.80.0080.02116.08
5.5.70.0030.02315.99
5.5.60.0110.02216.10
5.5.50.0060.02916.10
5.5.40.0040.02416.18
5.5.30.0050.03116.10
5.5.20.0080.02816.05
5.5.10.0080.03015.87
5.5.00.0060.02815.92
5.4.450.0040.02413.95
5.4.440.0080.02713.99
5.4.430.0050.02213.98
5.4.420.0040.03214.00
5.4.410.0090.02713.95
5.4.400.0030.01913.89
5.4.390.0100.02413.94
5.4.380.0020.02013.92
5.4.370.0020.02513.95
5.4.360.0020.02213.96
5.4.350.0030.02913.85
5.4.340.0070.02913.95
5.4.330.0050.00411.36
5.4.320.0050.02913.99
5.4.310.0070.02213.95
5.4.300.0050.02113.90
5.4.290.0040.02313.93
5.4.280.0070.02913.91
5.4.270.0050.02813.96
5.4.260.0010.02413.87
5.4.250.0070.03013.95
5.4.240.0060.02513.88
5.4.230.0060.02913.98
5.4.220.0040.01813.94
5.4.210.0090.02313.92
5.4.200.0060.02813.94
5.4.190.0060.02313.91
5.4.180.0030.03013.93
5.4.170.0050.02813.88
5.4.160.0080.02813.88
5.4.150.0070.02813.90
5.4.140.0050.02812.98
5.4.130.0050.02412.99
5.4.120.0060.02913.01
5.4.110.0010.03112.98
5.4.100.0030.01613.00
5.4.90.0030.02413.01
5.4.80.0050.03113.01
5.4.70.0050.02913.02
5.4.60.0020.02813.04
5.4.50.0070.02813.00
5.4.40.0090.02413.07
5.4.30.0010.03013.01
5.4.20.0040.02913.00
5.4.10.0070.02513.03
5.4.00.0080.02512.82

preferences:
63.81 ms | 401 KiB | 5 Q