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) { $k = '"'. addcslashes($k, '"\\') . '"'; $data[] = $k . ':' . $v; } else { $data[] = $v; } } if ($assoc) { $spl = '{'; $spr = '}'; } else { $spl = '['; $spr = ']'; } return $spl . implode(',', $data) . $spr; } function _js_enc_value($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[2], '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[1], "\r\n/"); } } } echo json_encode(array('"/'));

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)
8.3.60.0180.00316.37
8.3.50.0110.00717.47
8.3.40.0150.00018.70
8.3.30.0110.00318.77
8.3.20.0080.00018.54
8.3.10.0000.00820.54
8.3.00.0000.00817.50
8.2.180.0110.00316.63
8.2.170.0100.01022.96
8.2.160.0030.01022.11
8.2.150.0100.00024.18
8.2.140.0030.00524.66
8.2.130.0030.00526.16
8.2.120.0040.00419.83
8.2.110.0040.00421.03
8.2.100.0040.00717.78
8.2.90.0030.00619.13
8.2.80.0040.00417.91
8.2.70.0040.00417.38
8.2.60.0050.00317.92
8.2.50.0000.00918.07
8.2.40.0000.00718.09
8.2.30.0030.00618.12
8.2.20.0000.00717.52
8.2.10.0000.00817.54
8.2.00.0000.00717.61
8.1.280.0110.00425.92
8.1.270.0000.00824.66
8.1.260.0000.00726.35
8.1.250.0040.00428.09
8.1.240.0000.00920.73
8.1.230.0000.01121.10
8.1.220.0050.00317.74
8.1.210.0060.00318.96
8.1.200.0030.00617.22
8.1.190.0040.00417.40
8.1.180.0040.00418.10
8.1.170.0000.00918.89
8.1.160.0040.00418.93
8.1.150.0080.00018.62
8.1.140.0050.00317.36
8.1.130.0000.00717.81
8.1.120.0000.00817.38
8.1.110.0050.00217.39
8.1.100.0040.00417.33
8.1.90.0040.00417.41
8.1.80.0000.00717.45
8.1.70.0000.00717.38
8.1.60.0080.00017.54
8.1.50.0030.00517.36
8.1.40.0040.00417.52
8.1.30.0000.00717.69
8.1.20.0040.00417.64
8.1.10.0040.00417.38
8.1.00.0000.00717.40
8.0.300.0000.00720.08
8.0.290.0040.00416.75
8.0.280.0030.00318.45
8.0.270.0030.00317.27
8.0.260.0000.00716.82
8.0.250.0070.00016.93
8.0.240.0000.00716.89
8.0.230.0040.00416.94
8.0.220.0030.00316.80
8.0.210.0000.00816.80
8.0.200.0050.00216.99
8.0.190.0020.00517.02
8.0.180.0040.00416.88
8.0.170.0000.00916.89
8.0.160.0030.00316.89
8.0.150.0090.00016.88
8.0.140.0060.00316.80
8.0.130.0060.00013.31
8.0.120.0020.00516.86
8.0.110.0000.00716.71
8.0.100.0000.00816.71
8.0.90.0000.00816.70
8.0.80.0090.00616.78
8.0.70.0040.00416.90
8.0.60.0070.00016.73
8.0.50.0040.00416.78
8.0.30.0130.00917.11
8.0.20.0110.00717.28
8.0.10.0020.00516.80
8.0.00.0090.00916.71
7.4.330.0030.00312.91
7.4.320.0060.00016.60
7.4.300.0030.00316.45
7.4.290.0030.00316.64
7.4.280.0000.00916.59
7.4.270.0030.00616.42
7.4.260.0030.00313.27
7.4.250.0080.00016.47
7.4.240.0000.00716.54
7.4.230.0050.00216.68
7.4.220.0000.01816.40
7.4.210.0080.00816.49
7.4.200.0000.00716.39
7.4.190.0000.00716.39
7.4.160.0100.00516.48
7.4.150.0140.00416.38
7.4.140.0050.01216.40
7.4.130.0090.01016.52
7.4.120.0080.01016.47
7.4.110.0100.01316.47
7.4.100.0150.00316.35
7.4.90.0090.00816.45
7.4.80.0130.00916.32
7.4.70.0080.00916.16
7.4.60.0140.00316.57
7.4.50.0050.00016.48
7.4.40.0100.00716.13
7.4.30.0060.01016.41
7.4.00.0100.00614.93
7.3.330.0030.00313.24
7.3.320.0000.00512.99
7.3.310.0000.00716.11
7.3.300.0030.00316.20
7.3.290.0060.00916.20
7.3.280.0040.01316.26
7.3.270.0090.00916.57
7.3.260.0100.00716.22
7.3.250.0150.01016.47
7.3.240.0130.00416.20
7.3.230.0090.00816.25
7.3.210.0150.00616.38
7.3.200.0130.01019.39
7.3.190.0180.00416.24
7.3.180.0100.00716.13
7.3.170.0100.00716.41
7.3.160.0060.00916.50
7.3.120.0070.00914.82
7.3.110.0070.01014.74
7.3.100.0030.00914.77
7.3.90.0070.01115.02
7.3.80.0100.00014.98
7.3.70.0080.00614.69
7.3.60.0030.01014.82
7.3.50.0060.00314.66
7.3.40.0040.00414.52
7.3.30.0070.00714.80
7.3.20.0080.00316.45
7.3.10.0000.01016.49
7.3.00.0120.00316.69
7.2.330.0080.00816.38
7.2.320.0070.01116.29
7.2.310.0080.01116.49
7.2.300.0130.00416.59
7.2.290.0000.01716.44
7.2.250.0030.01014.82
7.2.240.0090.01114.63
7.2.230.0040.00814.97
7.2.220.0030.00615.03
7.2.210.0060.00615.10
7.2.200.0060.00914.79
7.2.190.0060.00615.02
7.2.180.0050.00514.55
7.2.170.0000.00914.79
7.1.330.0090.00615.52
7.1.320.0070.00715.78
7.1.310.0100.00015.48
7.1.300.0070.00315.75
7.1.290.0080.00015.59
7.1.280.0060.00615.81
7.1.270.0030.00715.68
7.1.260.0040.00815.63
7.1.70.0000.01017.00
7.1.60.0040.01219.40
7.1.50.0030.01716.59
7.1.00.0070.06022.27
7.0.200.0000.01316.72
7.0.140.0100.06722.06
7.0.120.0070.07022.04
7.0.90.0000.07020.05
7.0.80.0100.08019.88
7.0.70.0100.06719.91
7.0.60.0130.07719.80
7.0.50.0070.07720.31
7.0.40.0030.09020.11
7.0.30.0070.07020.19
7.0.20.0030.08019.94
7.0.10.0170.03320.10
7.0.00.0130.07320.12
5.6.280.0030.07321.17
5.6.240.0170.06720.60
5.6.230.0130.06320.74
5.6.220.0070.05020.63
5.6.210.0070.04020.51
5.6.200.0130.07320.96
5.6.190.0100.07721.15
5.6.180.0130.03321.07
5.6.170.0070.09021.19
5.6.160.0200.07321.04
5.6.150.0130.05721.16
5.6.140.0130.04321.08
5.6.130.0170.07321.06
5.6.120.0030.09321.10
5.6.110.0130.05021.06
5.6.100.0030.08320.94
5.6.90.0030.09020.95
5.6.80.0100.07720.37
5.6.70.0070.07720.40
5.6.60.0070.04320.44
5.6.50.0100.08020.34
5.6.40.0100.07020.48
5.6.30.0030.06320.39
5.6.20.0070.08020.47
5.6.10.0030.07720.38
5.6.00.0030.05020.46
5.5.380.0100.08720.34
5.5.370.0070.07720.39
5.5.360.0130.07720.39
5.5.350.0030.05720.48
5.5.340.0000.08020.93
5.5.330.0170.04720.95
5.5.320.0070.08720.89
5.5.310.0200.06720.77
5.5.300.0070.08020.92
5.5.290.0100.07020.94
5.5.280.0100.08020.95
5.5.270.0100.06720.77
5.5.260.0100.08020.89
5.5.250.0000.07020.63
5.5.240.0170.07020.26
5.5.230.0000.08020.22
5.5.220.0130.07020.12
5.5.210.0100.03320.32
5.5.200.0100.06320.28
5.5.190.0100.07720.29
5.5.180.0030.05020.16
5.5.160.0070.04020.28
5.5.150.0070.08320.00
5.5.140.0030.08720.14
5.5.130.0100.03720.19
5.5.120.0070.04320.19
5.5.110.0100.03320.28
5.5.100.0170.07320.12
5.5.90.0030.04320.11
5.5.80.0030.08019.99
5.5.70.0030.08020.11
5.5.60.0070.07720.13
5.5.50.0030.06720.07
5.5.40.0130.06020.05
5.5.30.0070.07719.98
5.5.20.0070.07720.01
5.5.10.0130.05720.03
5.5.00.0100.07720.05
5.4.450.0100.07719.55
5.4.440.0100.07319.50
5.4.430.0070.04019.17
5.4.420.0100.03719.27
5.4.410.0070.04319.36
5.4.400.0030.04718.91
5.4.390.0070.10018.91
5.4.380.0100.06719.04
5.4.370.0100.03718.90
5.4.360.0130.06719.20
5.4.350.0070.07719.01
5.4.340.0030.06319.23
5.4.320.0100.07318.88
5.4.310.0070.07319.03
5.4.300.0100.07719.03
5.4.290.0070.07019.23
5.4.280.0130.05318.90
5.4.270.0030.04019.04
5.4.260.0070.08018.86
5.4.250.0130.05319.04
5.4.240.0100.06719.01
5.4.230.0070.08019.15
5.4.220.0130.07018.89
5.4.210.0100.05019.12
5.4.200.0030.08019.12
5.4.190.0100.07719.13
5.4.180.0100.04719.12
5.4.170.0030.08718.86
5.4.160.0030.05018.83
5.4.150.0070.03719.07
5.4.140.0100.04016.44
5.4.130.0030.03716.46
5.4.120.0070.07016.34
5.4.110.0030.07716.54
5.4.100.0100.03016.40
5.4.90.0000.04016.45
5.4.80.0030.06016.55
5.4.70.0070.07316.50
5.4.60.0030.04716.32
5.4.50.0030.03716.25
5.4.40.0030.05716.51
5.4.30.0100.07016.34
5.4.20.0030.06016.39
5.4.10.0000.07716.47
5.4.00.0030.04715.85
5.3.290.0100.07014.70
5.3.280.0130.07014.54
5.3.270.0030.07714.66
5.3.260.0070.08314.65
5.3.250.0100.04714.56
5.3.240.0130.06714.66
5.3.230.0170.06314.69
5.3.220.0070.05714.71
5.3.210.0070.04714.51
5.3.200.0000.04714.63
5.3.190.0130.05714.73
5.3.180.0100.07014.51
5.3.170.0030.07714.68
5.3.160.0030.08014.73
5.3.150.0030.05714.52
5.3.140.0100.07314.57
5.3.130.0130.07314.63
5.3.120.0000.05714.52
5.3.110.0030.05314.52
5.3.100.0070.07314.20
5.3.90.0070.07014.16
5.3.80.0100.04014.11
5.3.70.0070.06014.04
5.3.60.0030.07714.13
5.3.50.0030.05314.01
5.3.40.0130.06013.91
5.3.30.0130.03713.98
5.3.20.0030.07313.77
5.3.10.0030.03713.59
5.3.00.0070.03313.66
5.2.170.0030.06711.07
5.2.160.0000.04011.32
5.2.150.0100.05311.24
5.2.140.0000.04311.20
5.2.130.0030.05711.03
5.2.120.0070.04311.25
5.2.110.0000.03011.15
5.2.100.0030.05011.23
5.2.90.0000.05311.19
5.2.80.0000.04711.04
5.2.70.0000.04011.21
5.2.60.0000.06710.99
5.2.50.0030.06311.14
5.2.40.0030.06011.06
5.2.30.0100.04010.99
5.2.20.0030.06010.93
5.2.10.0130.05010.90
5.2.00.0070.05310.77
5.1.60.0000.05710.10
5.1.50.0030.04010.04
5.1.40.0070.05310.00
5.1.30.0070.06310.27
5.1.20.0030.06010.25
5.1.10.0000.02710.13
5.1.00.0000.03010.10
5.0.50.0070.0478.66
5.0.40.0030.0338.46
5.0.30.0030.0338.35
5.0.20.0070.0408.31
5.0.10.0000.0508.30
5.0.00.0000.0508.21
4.4.90.0030.0377.37
4.4.80.0000.0377.37
4.4.70.0030.0237.37
4.4.60.0030.0277.37
4.4.50.0030.0377.37
4.4.40.0070.0507.37
4.4.30.0000.0407.37
4.4.20.0000.0177.37
4.4.10.0000.0277.37
4.4.00.0030.0537.37
4.3.110.0000.0237.37
4.3.100.0030.0137.37
4.3.90.0000.0407.37
4.3.80.0000.0337.37
4.3.70.0070.0337.37
4.3.60.0070.0277.37
4.3.50.0070.0277.37
4.3.40.0130.0407.37
4.3.30.0000.0377.37
4.3.20.0000.0277.37
4.3.10.0030.0337.37
4.3.00.0030.0277.37

preferences:
48.16 ms | 401 KiB | 5 Q