3v4l.org

run code in 300+ PHP versions simultaneously
<?php if (!function_exists('json_encode')) { function json_encode($it) { if (!($assoc = is_object($it)) && !is_array($it)) { return _js_enc_value($it); } $i = 0; $it = (array)$it; if (!$assoc) { foreach ($it as $k => $v) { if ($k !== $i) { $assoc = true; break; } $i++; } } $data = array(); foreach ($it as $k => $v) { $v = _js_enc_value($v); if ($assoc) { $k = _js_enc_value($k); $data[] = $k . ':' . $v; } else { $data[] = $v; } } if ($assoc) { $bl = '{'; $br = '}'; } else { $bl = '['; $br = ']'; } return $bl . implode(',', $data) . $br; } function _js_enc_value($value) { switch (true) { case is_array($value): case is_object($value): return json_encode($value); case is_bool($value): return $value ? 'true' : 'false'; case $value === null: case is_resource($value) && _js_error(): return 'null'; case is_string($value): return '"' . _js_uc_esc($value) . '"'; default: return $value; } } function _js_error() { return trigger_error( 'json_encode(): type is unsupported, encoded as null', E_USER_WARNING ); } function _js_uc_esc($value) { $pattern = "@[\r\n\"'/]|([^\x09\x0A\x0D\x20-\x7E]{3})+@"; return preg_replace_callback($pattern, '_js_uc_esc_cb', $value); } function _js_uc_esc_cb($matches) { switch (true) { case isset($matches[1]): $char = mb_convert_encoding($matches[0], 'UTF-16', 'UTF-8'); $str = ''; $len = strlen($char); for ($i = 0; $i < $len; $i += 2) { $str .= sprintf('\\u%02x%02x', ord($char[$i]), ord($char[$i + 1]) ); } return $str; default: return addcslashes($matches[0], "\r\n\"'/"); } } } echo json_encode(array('あ'=>'"/'));

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)
8.3.60.0140.00316.75
8.3.50.0100.00716.60
8.3.40.0090.00618.73
8.3.30.0120.00318.68
8.3.20.0080.00018.60
8.3.10.0080.00020.56
8.3.00.0070.00317.50
8.2.180.0110.00716.50
8.2.170.0040.01122.96
8.2.160.0070.00721.11
8.2.150.0070.00024.18
8.2.140.0080.00024.66
8.2.130.0040.00426.16
8.2.120.0040.00419.66
8.2.110.0000.01020.92
8.2.100.0060.00617.70
8.2.90.0100.00019.35
8.2.80.0070.00019.46
8.2.70.0080.00017.38
8.2.60.0000.00817.91
8.2.50.0000.00818.07
8.2.40.0040.00418.09
8.2.30.0070.00017.93
8.2.20.0040.00417.70
8.2.10.0050.00317.72
8.2.00.0070.00017.55
8.1.280.0090.00625.92
8.1.270.0050.00324.66
8.1.260.0040.00426.35
8.1.250.0000.00728.09
8.1.240.0100.00722.38
8.1.230.0060.00620.95
8.1.220.0050.00317.74
8.1.210.0080.00019.03
8.1.200.0090.00017.25
8.1.190.0070.00317.43
8.1.180.0000.00818.10
8.1.170.0050.00320.49
8.1.160.0000.00818.88
8.1.150.0050.00318.50
8.1.140.0070.00317.49
8.1.130.0070.00017.83
8.1.120.0000.00817.41
8.1.110.0030.00517.45
8.1.100.0000.00817.40
8.1.90.0040.00417.46
8.1.80.0030.00517.35
8.1.70.0070.00017.34
8.1.60.0040.00417.61
8.1.50.0040.00417.47
8.1.40.0000.00817.41
8.1.30.0000.00817.64
8.1.20.0080.00017.62
8.1.10.0040.00417.57
8.1.00.0000.00817.40
8.0.300.0040.00419.73
8.0.290.0050.00316.75
8.0.280.0000.00718.45
8.0.270.0000.00717.26
8.0.260.0000.00616.87
8.0.250.0000.00716.99
8.0.240.0040.00416.98
8.0.230.0030.00316.92
8.0.220.0000.00816.87
8.0.210.0060.00316.89
8.0.200.0060.00017.00
8.0.190.0050.00317.01
8.0.180.0040.00416.91
8.0.170.0090.00016.83
8.0.160.0040.00416.89
8.0.150.0040.00416.79
8.0.140.0070.00316.86
8.0.130.0000.00513.31
8.0.120.0040.00416.73
8.0.110.0040.00416.89
8.0.100.0000.00716.74
8.0.90.0000.00716.88
8.0.80.0030.01116.91
8.0.70.0070.00016.93
8.0.60.0050.00516.79
8.0.50.0040.00416.85
8.0.30.0090.01316.96
8.0.20.0130.00717.11
8.0.10.0080.00016.91
8.0.00.0090.00816.80
7.4.330.0000.00512.91
7.4.320.0000.00716.45
7.4.300.0040.00416.50
7.4.290.0030.00716.50
7.4.280.0040.00416.61
7.4.270.0000.00716.37
7.4.260.0000.00513.39
7.4.250.0030.00616.29
7.4.240.0030.00316.43
7.4.230.0040.00416.35
7.4.220.0060.01616.39
7.4.210.0070.00816.42
7.4.200.0000.00716.42
7.4.190.0030.00316.57
7.4.160.0140.00516.29
7.4.150.0130.00316.59
7.4.140.0070.01516.60
7.4.130.0080.01016.48
7.4.120.0030.01416.49
7.4.110.0060.01216.48
7.4.100.0090.00916.55
7.4.90.0030.01316.52
7.4.80.0060.01216.55
7.4.70.0140.00316.30
7.4.60.0040.01416.31
7.4.50.0030.00616.67
7.4.40.0070.01016.30
7.4.30.0060.01016.44
7.4.00.0090.00815.01
7.3.330.0060.00013.18
7.3.320.0050.00013.07
7.3.310.0000.00716.34
7.3.300.0030.00316.20
7.3.290.0030.01116.13
7.3.280.0080.01016.28
7.3.270.0030.01316.50
7.3.260.0080.01016.34
7.3.250.0080.01016.41
7.3.240.0100.01316.61
7.3.230.0060.01216.44
7.3.210.0030.01316.38
7.3.200.0040.01519.39
7.3.190.0100.00716.52
7.3.180.0080.00816.17
7.3.170.0090.00616.61
7.3.160.0070.01416.27
7.3.120.0060.00914.83
7.3.110.0080.00814.94
7.3.100.0040.00814.51
7.3.90.0050.00714.80
7.3.80.0050.00914.74
7.3.70.0060.00614.71
7.3.60.0050.00914.64
7.3.50.0060.00814.76
7.3.40.0030.01214.82
7.3.30.0070.00714.67
7.3.20.0080.00316.56
7.3.10.0040.00916.47
7.3.00.0070.00716.42
7.2.330.0110.00716.66
7.2.320.0090.00816.60
7.2.310.0220.02416.63
7.2.300.0000.01716.45
7.2.290.0090.01016.51
7.2.250.0070.01115.11
7.2.240.0020.01814.98
7.2.230.0050.01015.08
7.2.220.0030.00914.76
7.2.210.0060.00814.77
7.2.200.0050.00814.67
7.2.190.0020.00914.99
7.2.180.0050.00814.93
7.2.170.0030.00914.80
7.2.60.0060.00916.65
7.2.00.0070.01419.26
7.1.330.0070.00815.73
7.1.320.0050.00815.73
7.1.310.0020.01015.67
7.1.300.0050.00715.69
7.1.290.0060.00615.42
7.1.280.0020.01115.63
7.1.270.0020.01315.58
7.1.260.0050.00915.74
7.1.200.0100.00315.61
7.1.100.0030.00917.91
7.1.70.0030.00617.05
7.1.60.0100.01419.40
7.1.50.0000.02116.60
7.1.00.0000.08022.34
7.0.200.0050.00216.75
7.0.140.0100.04322.21
7.0.120.0030.06722.04
7.0.90.0070.07719.90
7.0.80.0100.07719.89
7.0.70.0430.05719.91
7.0.60.0600.07019.97
7.0.50.0470.09720.38
7.0.40.0030.09319.92
7.0.30.0070.05020.09
7.0.20.0100.05320.10
7.0.10.0070.08320.07
7.0.00.0030.08720.16
5.6.280.0030.07321.11
5.6.240.0070.08020.66
5.6.230.0070.09020.68
5.6.220.0200.06720.70
5.6.210.0030.08020.51
5.6.200.0070.08021.06
5.6.190.0030.07020.96
5.6.180.0070.04321.12
5.6.170.0030.04321.11
5.6.160.0070.05321.10
5.6.150.0070.04021.16
5.6.140.0030.04321.04
5.6.130.0000.05021.09
5.6.120.0070.04021.11
5.6.110.0000.05021.12
5.6.100.0000.04720.96
5.6.90.0030.04020.95
5.6.80.0000.05320.42
5.6.70.0000.07020.42
5.6.60.0070.04320.56
5.6.50.0070.03020.37
5.6.40.0030.04020.31
5.6.30.0170.02720.39
5.6.20.0070.03320.32
5.6.10.0000.04020.50
5.6.00.0030.04020.46
5.5.380.0030.08020.38
5.5.370.0070.06320.59
5.5.360.0070.07320.46
5.5.350.0130.07320.41
5.5.340.0100.07720.95
5.5.330.0070.07720.82
5.5.320.0100.04320.78
5.5.310.0100.06020.90
5.5.300.0070.06020.79
5.5.290.0100.04020.81
5.5.280.0030.04320.81
5.5.270.0070.03720.73
5.5.260.0070.03720.89
5.5.250.0030.05020.59
5.5.240.0030.04020.05
5.5.230.0100.03320.20
5.5.220.0130.03020.20
5.5.210.0000.03720.17
5.5.200.0070.03020.19
5.5.190.0030.04020.20
5.5.180.0100.03320.13
5.5.160.0070.03720.29
5.5.150.0070.03320.29
5.5.140.0030.04020.25
5.5.130.0000.07320.25
5.5.120.0030.04320.20
5.5.110.0070.05320.24
5.5.100.0030.04020.11
5.5.90.0000.03720.11
5.5.80.0030.04020.08
5.5.70.0100.03320.08
5.5.60.0070.06020.13
5.5.50.0000.04020.17
5.5.40.0100.03720.09
5.5.30.0030.04719.92
5.5.20.0030.04019.95
5.5.10.0070.03320.05
5.5.00.0070.03720.06
5.4.450.0070.06019.46
5.4.440.0000.04319.49
5.4.430.0030.04019.22
5.4.420.0030.04019.46
5.4.410.0070.03319.07
5.4.400.0030.03318.95
5.4.390.0000.05319.18
5.4.380.0030.04719.04
5.4.370.0100.03019.14
5.4.360.0070.03719.11
5.4.350.0030.03718.88
5.4.340.0070.03019.14
5.4.320.0070.03019.05
5.4.310.0070.03319.09
5.4.300.0030.03719.02
5.4.290.0030.03719.16
5.4.280.0030.03319.23
5.4.270.0100.02719.03
5.4.260.0000.04319.02
5.4.250.0030.03719.17
5.4.240.0000.04019.02
5.4.230.0030.03719.12
5.4.220.0070.03319.12
5.4.210.0000.04019.22
5.4.200.0000.04019.09
5.4.190.0000.04019.02
5.4.180.0070.04018.87
5.4.170.0000.04319.04
5.4.160.0030.03719.02
5.4.150.0000.04018.80
5.4.140.0030.06316.47
5.4.130.0070.03316.43
5.4.120.0000.04716.42
5.4.110.0070.08016.54
5.4.100.0100.08016.45
5.4.90.0070.07016.46
5.4.80.0070.07316.43
5.4.70.0070.07716.42
5.4.60.0100.06716.25
5.4.50.0070.07016.45
5.4.40.0070.04316.36
5.4.30.0100.05716.30
5.4.20.0000.08016.25
5.4.10.0000.05716.43
5.4.00.0170.03315.84
5.3.290.0070.04314.71
5.3.280.0070.04314.61
5.3.270.0070.06014.56
5.3.260.0070.03014.69
5.3.250.0030.03014.62
5.3.240.0100.03014.66
5.3.230.0000.04314.71
5.3.220.0030.07014.73
5.3.210.0030.07714.61
5.3.200.0000.05014.68
5.3.190.0200.06314.54
5.3.180.0070.04014.68
5.3.170.0070.07714.65
5.3.160.0100.07014.52
5.3.150.0370.04714.57
5.3.140.0070.06014.68
5.3.130.0070.06314.67
5.3.120.0070.06714.55
5.3.110.0070.04314.66
5.3.100.0200.06314.14
5.3.90.0070.07314.03
5.3.80.0130.05314.09
5.3.70.0070.08014.02
5.3.60.0100.06714.13
5.3.50.0070.05014.06
5.3.40.0070.07713.86
5.3.30.0100.06313.93
5.3.20.0070.07313.71
5.3.10.0030.07313.79
5.3.00.0100.05713.55
5.2.170.0070.03011.08
5.2.160.0030.05011.24
5.2.150.0130.05311.07
5.2.140.0000.04711.24
5.2.130.0030.03011.20
5.2.120.0030.06011.25
5.2.110.0070.05711.03
5.2.100.0100.05311.02
5.2.90.0230.05011.12
5.2.80.0070.04711.04
5.2.70.0030.04311.15
5.2.60.0030.07310.94
5.2.50.0070.02711.07
5.2.40.0030.04311.17
5.2.30.0070.06011.10
5.2.20.0030.03010.89
5.2.10.0000.06010.93
5.2.00.0070.04710.74
5.1.60.0000.03310.12
5.1.50.0070.04010.13
5.1.40.0000.05010.07
5.1.30.0030.03310.48
5.1.20.0030.05710.47
5.1.10.0030.0579.94
5.1.00.0030.04010.16
5.0.50.0030.0308.60
5.0.40.0100.0138.30
5.0.30.0000.0338.33
5.0.20.0070.0438.32
5.0.10.0030.0438.10
5.0.00.0030.0508.20
4.4.90.0030.0136.99
4.4.80.0030.0336.99
4.4.70.0000.0406.99
4.4.60.0030.0276.99
4.4.50.0030.0336.99
4.4.40.0030.0536.99
4.4.30.0070.0306.99
4.4.20.0000.0376.99
4.4.10.0000.0276.99
4.4.00.0030.0506.99
4.3.110.0000.0336.99
4.3.100.0000.0276.99
4.3.90.0030.0276.99
4.3.80.0030.0536.99
4.3.70.0000.0306.99
4.3.60.0000.0276.99
4.3.50.0070.0176.99
4.3.40.0070.0276.99
4.3.30.0000.0236.99
4.3.20.0070.0206.99
4.3.10.0000.0206.99
4.3.00.0000.0336.99

preferences:
45.38 ms | 400 KiB | 5 Q