3v4l.org

run code in 300+ PHP versions simultaneously
<?php if (!function_exists('json_encode')) { function json_encode($it) { if (!is_array($it) && !is_object($it)) { return _js_enc_value($it); } $assoc = false; $i = 0; foreach ($it as $k => $v) { if ($k !== $i) { $assoc = true; break; } $i++; } $data = array(); foreach ($it as $k => $v) { $k = '"'. addcslashes($k, '"\\') . '"'; $v = _js_enc_value($v); $data[] = $assoc ? $k . ':' . $v : $v; } if ($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): return 'null'; case is_string($value): return '"' . _js_uni_esc($value) . '"'; default: return $value; } } function _js_uni_esc($value) { $pattern = "/\r|(\n)|((?:[^\x09\x0A\x0D\x20-\x7E]{3})+)/"; return preg_replace_callback($pattern, '_js_uni_esc_cb', $value); } function _js_uni_esc_cb($matches) { switch (true) { case isset($matches[2]): $char = mb_convert_encoding($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 $str; case isset($matches[1]): return '\\n'; default: return '\\r'; } } } $var = array( 0 => array('text', 1, 1.1, true, false, null, new stdClass), 2 => array('a' => 'hoge', 'b' => 'foo'), ); echo json_encode($var);

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)
8.3.60.0090.01218.30
8.3.50.0110.00921.20
8.3.40.0100.00318.81
8.3.30.0070.01319.27
8.3.20.0040.00420.33
8.3.10.0030.00522.10
8.3.00.0050.00322.39
8.2.180.0100.01016.50
8.2.170.0180.00422.96
8.2.160.0070.00719.23
8.2.150.0040.00424.18
8.2.140.0030.00624.66
8.2.130.0070.01126.16
8.2.120.0040.00419.36
8.2.110.0000.01019.39
8.2.100.0130.00017.94
8.2.90.0040.00419.17
8.2.80.0090.00017.97
8.2.70.0060.00317.61
8.2.60.0000.00918.05
8.2.50.0040.00418.07
8.2.40.0000.00819.88
8.2.30.0040.00418.15
8.2.20.0070.00017.82
8.2.10.0000.00717.69
8.2.00.0000.00817.79
8.1.280.0060.00925.92
8.1.270.0050.00322.19
8.1.260.0080.00026.35
8.1.250.0060.00328.09
8.1.240.0090.00021.47
8.1.230.0000.01217.52
8.1.220.0000.00917.78
8.1.210.0030.00618.77
8.1.200.0100.00017.23
8.1.190.0040.00417.22
8.1.180.0080.00018.59
8.1.170.0030.00618.46
8.1.160.0040.00422.14
8.1.150.0050.00218.62
8.1.140.0040.00417.49
8.1.130.0040.00417.86
8.1.120.0040.00417.41
8.1.110.0000.00817.40
8.1.100.0020.00517.38
8.1.90.0000.00717.49
8.1.80.0030.00317.50
8.1.70.0070.00017.44
8.1.60.0080.00017.66
8.1.50.0030.00517.43
8.1.40.0000.00817.51
8.1.30.0000.00817.55
8.1.20.0030.00617.72
8.1.10.0070.00017.64
8.1.00.0000.00817.44
8.0.300.0040.00418.77
8.0.290.0070.00016.75
8.0.280.0070.00018.48
8.0.270.0030.00317.36
8.0.260.0040.00416.82
8.0.250.0000.00716.99
8.0.240.0000.00716.87
8.0.230.0030.00316.90
8.0.220.0000.00716.87
8.0.210.0000.00816.84
8.0.200.0030.00316.98
8.0.190.0040.00416.87
8.0.180.0040.00416.96
8.0.170.0000.00816.94
8.0.160.0040.00416.98
8.0.150.0070.00016.94
8.0.140.0040.00416.82
8.0.130.0000.00613.40
8.0.120.0080.00016.86
8.0.110.0040.00416.86
8.0.100.0040.00416.97
8.0.90.0040.00416.98
8.0.80.0100.01316.98
8.0.70.0000.00817.00
8.0.60.0040.00416.89
8.0.50.0080.00016.80
8.0.30.0090.00917.14
8.0.20.0180.00617.40
8.0.10.0050.00217.00
8.0.00.0080.01316.91
7.4.330.0000.00515.02
7.4.320.0000.00816.57
7.4.300.0030.00316.64
7.4.290.0000.00816.50
7.4.280.0070.00016.64
7.4.270.0030.00316.70
7.4.260.0000.00716.64
7.4.250.0030.00516.61
7.4.240.0040.00316.61
7.4.230.0030.00316.43
7.4.220.0100.01316.74
7.4.210.0080.01016.60
7.4.200.0050.00216.69
7.4.190.0070.00016.51
7.4.160.0050.01116.41
7.4.150.0070.01317.40
7.4.140.0100.00717.86
7.4.130.0120.00616.56
7.4.120.0060.01016.56
7.4.110.0170.00316.50
7.4.100.0150.00316.72
7.4.90.0100.00716.52
7.4.80.0130.00319.39
7.4.70.0030.01416.55
7.4.60.0090.00916.51
7.4.50.0050.00216.65
7.4.40.0090.00922.77
7.4.30.0120.00916.56
7.4.00.0060.00914.98
7.3.330.0030.00313.15
7.3.320.0000.00513.24
7.3.310.0040.00416.15
7.3.300.0000.00716.20
7.3.290.0120.00316.30
7.3.280.0040.01316.29
7.3.270.0130.00817.40
7.3.260.0110.01216.55
7.3.250.0090.00916.51
7.3.240.0030.01416.30
7.3.230.0140.00916.57
7.3.210.0060.01216.66
7.3.200.0100.01019.39
7.3.190.0090.01316.56
7.3.180.0100.00616.61
7.3.170.0160.00016.48
7.3.160.0080.00816.22
7.3.120.0030.00914.74
7.3.10.0070.01016.16
7.3.00.0060.00916.47
7.2.330.0090.00916.76
7.2.320.0060.01216.78
7.2.310.0070.01616.66
7.2.300.0100.00616.53
7.2.290.0030.01316.35
7.2.130.0130.00516.67
7.2.120.0080.01116.57
7.2.110.0140.00716.48
7.2.100.0190.00316.30
7.2.90.0070.01116.87
7.2.80.0060.01216.44
7.2.70.0060.00616.40
7.2.60.0030.01016.76
7.2.50.0100.00316.55
7.2.40.0080.01216.80
7.2.30.0100.00716.70
7.2.20.0070.01116.85
7.2.10.0070.00716.88
7.2.00.0050.01018.17
7.1.250.0130.00815.34
7.1.100.0030.00918.02
7.1.70.0050.00317.03
7.1.60.0130.01019.82
7.1.50.0100.01416.57
7.1.00.0000.07722.43
7.0.200.0100.00716.75
7.0.140.0070.06721.95
7.0.90.0130.04719.97
7.0.80.0100.07720.02
7.0.70.0130.07720.02
7.0.60.0100.05720.00
7.0.50.0100.04720.32
7.0.40.0070.07720.02
7.0.30.0200.06720.08
7.0.20.0100.08320.18
7.0.10.0100.07020.14
7.0.00.0030.04720.18
5.6.280.0030.07320.98
5.6.240.0030.08720.57
5.6.230.0070.08720.52
5.6.220.0070.08020.63
5.6.210.0130.07720.70
5.6.200.0100.08720.97
5.6.190.0000.04721.13
5.6.180.0170.07021.05
5.6.170.0030.04721.02
5.6.160.0130.08021.05
5.6.150.0100.08021.12
5.6.140.0130.07321.03
5.6.130.0130.04720.95
5.6.120.0070.08021.12
5.6.110.0070.08321.03
5.6.100.0070.08021.05
5.6.90.0030.08021.02
5.6.80.0030.08720.48
5.6.70.0230.05320.41
5.6.60.0030.05020.42
5.6.50.0030.07320.44
5.6.40.0100.06720.39
5.6.30.0130.07320.48
5.6.20.0200.06720.44
5.6.10.0130.07720.48
5.6.00.0030.07020.46
5.5.380.0170.07020.37
5.5.370.0000.08020.37
5.5.360.0200.07020.33
5.5.350.0070.08020.44
5.5.340.0030.08720.91
5.5.330.0170.07320.78
5.5.320.0100.06320.78
5.5.310.0100.08020.79
5.5.300.0030.04720.78
5.5.290.0030.08320.80
5.5.280.0000.08020.91
5.5.270.0070.05720.75
5.5.260.0200.07020.94
5.5.250.0030.05320.66
5.5.240.0030.07720.19
5.5.230.0100.07720.28
5.5.220.0070.04720.19
5.5.210.0170.05020.28
5.5.200.0000.05320.18
5.5.190.0070.07020.29
5.5.180.0030.04720.29
5.5.160.0030.08020.22
5.5.150.0000.08720.20
5.5.140.0130.05720.19
5.5.130.0100.05320.28
5.5.120.0130.07020.29
5.5.110.0070.08320.09
5.5.100.0070.08019.97
5.5.90.0230.06020.08
5.5.80.0070.05320.09
5.5.70.0070.07320.08
5.5.60.0070.07020.07
5.5.50.0070.07720.13
5.5.40.0100.07320.07
5.5.30.0070.04320.07
5.5.20.0170.07320.07
5.5.10.0070.05020.00
5.5.00.0100.07719.96
5.4.450.0070.07019.36
5.4.440.0030.07019.18
5.4.430.0130.07019.52
5.4.420.0100.07719.23
5.4.410.0070.07319.43
5.4.400.0030.04319.13
5.4.390.0100.08019.09
5.4.380.0100.06719.22
5.4.370.0100.06719.22
5.4.360.0070.07718.95
5.4.350.0000.08318.93
5.4.340.0030.04319.16
5.4.320.0130.04318.91
5.4.310.0030.04719.02
5.4.300.0030.05319.12
5.4.290.0170.07019.02
5.4.280.0030.04018.90
5.4.270.0100.07319.12
5.4.260.0070.07719.04
5.4.250.0070.05319.18
5.4.240.0030.06318.84
5.4.230.0030.07019.04
5.4.220.0070.07318.86
5.4.210.0100.06719.09
5.4.200.0000.05319.04
5.4.190.0070.04719.17
5.4.180.0170.04319.02
5.4.170.0130.04019.11
5.4.160.0100.07019.03
5.4.150.0070.07019.16
5.4.140.0070.07316.42
5.4.130.0000.07316.50
5.4.120.0030.08016.20
5.4.110.0130.05716.52
5.4.100.0130.06716.32
5.4.90.0100.06716.49
5.4.80.0100.07016.55
5.4.70.0130.05716.42
5.4.60.0030.07016.36
5.4.50.0070.06716.47
5.4.40.0100.05316.54
5.4.30.0100.06716.47
5.4.20.0070.07316.46
5.4.10.0030.06716.32
5.4.00.0070.06715.85
5.3.290.0100.07314.62
5.3.280.0030.05314.63
5.3.270.0100.07314.61
5.3.260.0070.06714.65
5.3.250.0130.06314.66
5.3.240.0170.04714.64
5.3.230.0030.06714.69
5.3.220.0030.08014.59
5.3.210.0000.06314.59
5.3.200.0030.07714.52
5.3.190.0000.08014.64
5.3.180.0070.07014.52
5.3.170.0070.07014.57
5.3.160.0030.07314.61
5.3.150.0000.08014.71
5.3.140.0130.07314.65
5.3.130.0000.07014.63
5.3.120.0000.07714.63
5.3.110.0070.07714.59
5.3.100.0030.04314.04
5.3.90.0130.06713.98
5.3.80.0030.06014.04
5.3.70.0030.07713.93
5.3.60.0170.06713.95
5.3.50.0030.08014.02
5.3.40.0030.04314.09
5.3.30.0070.07013.87
5.3.20.0100.07013.82
5.3.10.0030.07013.66
5.3.00.0100.04313.56
5.2.170.0030.05711.23
5.2.160.0030.06311.06
5.2.150.0000.03711.03
5.2.140.0130.04711.18
5.2.130.0000.06311.12
5.2.120.0030.04711.18
5.2.110.0030.03311.13
5.2.100.0100.05710.98
5.2.90.0070.03711.27
5.2.80.0070.05711.17
5.2.70.0030.06310.98
5.2.60.0130.05711.07
5.2.50.0000.05011.05
5.2.40.0030.05711.09
5.2.30.0030.05711.11
5.2.20.0100.04311.07
5.2.10.0000.04010.82
5.2.00.0030.06010.88
5.1.60.0030.05310.11
5.1.50.0030.05310.08
5.1.40.0000.04710.00
5.1.30.0130.04310.37
5.1.20.0030.05710.35
5.1.10.0030.0509.99
5.1.00.0070.04310.17
5.0.50.0070.0438.59
5.0.40.0000.0438.53
5.0.30.0030.0408.36
5.0.20.0000.0408.28
5.0.10.0070.0308.06
5.0.00.0030.0678.09
4.4.90.0030.0337.56
4.4.80.0030.0377.56
4.4.70.0000.0337.56
4.4.60.0100.0277.56
4.4.50.0000.0307.56
4.4.40.0000.0537.56
4.4.30.0000.0377.56
4.4.20.0030.0377.56
4.4.10.0000.0307.56
4.4.00.0070.0237.56
4.3.110.0030.0277.56
4.3.100.0170.0177.56
4.3.90.0000.0277.56
4.3.80.0000.0537.56
4.3.70.0030.0337.56
4.3.60.0000.0337.56
4.3.50.0070.0307.56
4.3.40.0030.0477.56
4.3.30.0030.0307.56
4.3.20.0000.0307.56
4.3.10.0030.0337.56
4.3.00.0030.0337.56

preferences:
51.79 ms | 401 KiB | 5 Q