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; } $i++; } if (!isset($k)) { $assoc = true; } $data = array(); foreach ($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 $value; } } function _js_uc_esc($value) { $pattern = "/\r|(\n)|((?:[^\x09\x0A\x0D\x20-\x7E]{3})+)/"; return preg_replace_callback($pattern, '_js_uni_esc_cb', $value); } function _js_uc_esc_cb($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)
8.3.60.0120.00318.55
8.3.50.0130.00721.27
8.3.40.0040.01118.70
8.3.30.0120.00318.76
8.3.20.0050.00318.61
8.3.10.0040.00420.42
8.3.00.0060.00319.38
8.2.180.0070.01116.75
8.2.170.0100.00622.96
8.2.160.0070.00721.90
8.2.150.0030.00524.18
8.2.140.0000.00824.66
8.2.130.0000.00726.16
8.2.120.0040.00419.89
8.2.110.0110.00022.25
8.2.100.0000.01217.72
8.2.90.0040.00417.84
8.2.80.0030.00617.97
8.2.70.0050.00517.63
8.2.60.0040.00418.03
8.2.50.0050.00318.07
8.2.40.0040.00418.34
8.2.30.0040.00419.84
8.2.20.0040.00417.74
8.2.10.0000.00717.79
8.2.00.0080.00017.79
8.1.280.0140.00425.92
8.1.270.0070.00023.99
8.1.260.0000.00826.35
8.1.250.0080.00028.09
8.1.240.0040.00422.11
8.1.230.0060.00621.04
8.1.220.0070.00317.88
8.1.210.0080.00018.97
8.1.200.0030.00617.25
8.1.190.0000.00917.53
8.1.180.0030.00618.10
8.1.170.0040.00418.75
8.1.160.0060.00318.97
8.1.150.0000.00718.66
8.1.140.0080.00017.43
8.1.130.0040.00417.93
8.1.120.0040.00417.41
8.1.110.0040.00417.52
8.1.100.0040.00417.48
8.1.90.0000.00717.44
8.1.80.0040.00417.44
8.1.70.0000.00717.51
8.1.60.0040.00417.52
8.1.50.0050.00317.51
8.1.40.0040.00417.52
8.1.30.0000.00817.71
8.1.20.0040.00417.73
8.1.10.0050.00217.61
8.1.00.0040.00417.44
8.0.300.0040.00420.15
8.0.290.0000.00916.88
8.0.280.0030.00318.49
8.0.270.0030.00617.31
8.0.260.0000.00718.66
8.0.250.0000.00716.89
8.0.240.0060.00317.04
8.0.230.0000.00716.86
8.0.220.0040.00416.94
8.0.210.0070.00016.90
8.0.200.0040.00417.02
8.0.190.0000.00816.98
8.0.180.0040.00716.99
8.0.170.0030.00716.93
8.0.160.0030.00616.82
8.0.150.0030.00716.89
8.0.140.0040.00416.95
8.0.130.0000.00513.35
8.0.120.0000.00716.86
8.0.110.0000.01016.73
8.0.100.0040.00416.73
8.0.90.0030.00516.87
8.0.80.0090.00616.91
8.0.70.0000.00716.93
8.0.60.0050.00216.80
8.0.50.0080.00016.80
8.0.30.0140.00817.05
8.0.20.0120.00717.40
8.0.10.0080.00017.11
8.0.00.0140.01116.79
7.4.330.0000.00514.82
7.4.320.0030.00316.53
7.4.300.0030.00316.65
7.4.290.0040.00716.63
7.4.280.0060.00316.56
7.4.270.0000.00716.64
7.4.260.0030.00313.34
7.4.250.0030.00616.67
7.4.240.0040.00416.65
7.4.230.0000.00716.52
7.4.220.0090.01216.63
7.4.210.0050.00916.57
7.4.200.0070.00016.47
7.4.190.0000.00716.71
7.4.160.0150.00316.41
7.4.150.0060.01317.40
7.4.140.0090.00917.24
7.4.130.0130.00716.51
7.4.120.0090.00816.39
7.4.110.0120.00616.69
7.4.100.0070.01516.60
7.4.90.0040.01316.66
7.4.80.0060.01019.03
7.4.70.0040.01216.53
7.4.60.0090.00616.51
7.4.50.0030.00616.38
7.4.40.0070.01022.27
7.4.30.0000.01616.54
7.4.00.0090.00815.02
7.3.330.0050.00313.20
7.3.320.0000.00513.08
7.3.310.0030.00316.18
7.3.300.0040.00416.16
7.3.290.0120.00616.27
7.3.280.0050.00916.25
7.3.270.0110.01117.40
7.3.260.0100.01018.24
7.3.250.0050.01416.30
7.3.240.0070.01116.26
7.3.230.0110.00516.39
7.3.210.0120.00616.41
7.3.200.0090.00819.39
7.3.190.0100.00716.20
7.3.180.0060.00916.22
7.3.170.0030.01216.27
7.3.160.0100.00616.64
7.3.120.0050.01214.71
7.3.110.0060.01014.92
7.3.100.0000.01114.80
7.3.90.0070.01014.97
7.3.80.0000.01614.56
7.3.70.0060.01314.79
7.3.60.0030.00914.78
7.3.50.0040.00414.78
7.3.40.0070.01014.84
7.3.30.0110.00414.67
7.3.20.0060.01216.61
7.3.10.0100.01016.30
7.3.00.0030.01416.63
7.2.330.0150.00516.63
7.2.320.0120.01216.63
7.2.310.0180.00316.65
7.2.300.0060.01316.66
7.2.290.0070.01016.63
7.2.250.0000.01615.14
7.2.240.0000.01715.12
7.2.230.0090.00615.14
7.2.220.0060.00915.23
7.2.210.0040.00815.16
7.2.200.0000.01715.02
7.2.190.0060.00914.78
7.2.180.0100.00314.86
7.2.170.0040.01115.10
7.2.00.0060.00619.31
7.1.330.0110.00315.46
7.1.320.0130.00315.80
7.1.310.0000.01615.81
7.1.300.0120.00415.61
7.1.290.0000.01515.73
7.1.280.0030.01015.54
7.1.270.0030.00715.73
7.1.260.0090.00615.90
7.1.100.0060.01217.95
7.1.70.0060.00617.16
7.1.60.0000.02219.40
7.1.50.0100.00016.97
7.1.00.0000.07322.40
7.0.200.0070.00714.79
7.0.140.0100.06722.09
7.0.90.0400.07719.98
7.0.80.0100.08319.97
7.0.70.0630.08019.93
7.0.60.0670.07020.02
7.0.50.0330.05020.24
7.0.40.0130.07020.09
7.0.30.0100.08320.15
7.0.20.0030.04720.05
7.0.10.0100.04020.07
7.0.00.0070.06020.04
5.6.280.0100.06721.11
5.6.240.0070.07320.77
5.6.230.0170.07320.65
5.6.220.0030.04320.61
5.6.210.0130.04020.49
5.6.200.0100.06021.16
5.6.190.0270.03020.94
5.6.180.0170.04021.06
5.6.170.0000.07721.07
5.6.160.0070.08721.19
5.6.150.0030.07721.02
5.6.140.0130.07721.05
5.6.130.0070.08320.92
5.6.120.0070.07721.00
5.6.110.0070.05320.96
5.6.100.0030.04321.18
5.6.90.0070.04020.96
5.6.80.0030.04020.45
5.6.70.0100.02720.45
5.6.60.0000.04320.41
5.6.50.0030.03720.43
5.6.40.0030.03720.43
5.6.30.0100.03020.39
5.6.20.0070.07320.32
5.6.10.0000.05020.37
5.6.00.0070.04020.40
5.5.380.0130.03720.46
5.5.370.0030.08720.36
5.5.360.0130.04320.43
5.5.350.0030.07720.37
5.5.340.0070.08020.92
5.5.330.0070.07320.79
5.5.320.0070.07720.91
5.5.310.0100.07720.77
5.5.300.0030.08320.92
5.5.290.0070.07320.79
5.5.280.0130.04320.65
5.5.270.0000.05320.88
5.5.260.0030.04320.80
5.5.250.0070.04320.59
5.5.240.0070.03320.23
5.5.230.0070.03320.32
5.5.220.0000.05020.32
5.5.210.0030.05720.27
5.5.200.0070.05320.24
5.5.190.0000.05720.24
5.5.180.0000.04320.23
5.5.160.0100.05020.25
5.5.150.0000.04020.19
5.5.140.0030.03319.99
5.5.130.0100.03320.25
5.5.120.0000.04020.29
5.5.110.0030.04020.27
5.5.100.0070.06720.18
5.5.90.0070.03319.99
5.5.80.0100.02720.08
5.5.70.0070.03320.07
5.5.60.0130.03020.07
5.5.50.0230.02020.05
5.5.40.0030.04320.13
5.5.30.0070.03320.15
5.5.20.0100.04020.10
5.5.10.0030.03320.13
5.5.00.0070.03020.07
5.4.450.0070.09019.48
5.4.440.0200.06319.23
5.4.430.0070.04719.35
5.4.420.0030.04019.20
5.4.410.0070.03319.04
5.4.400.0000.04019.13
5.4.390.0030.04318.95
5.4.380.0030.03719.03
5.4.370.0000.04019.05
5.4.360.0030.03719.00
5.4.350.0030.04319.03
5.4.340.0030.03719.16
5.4.320.0030.04019.05
5.4.310.0070.07719.14
5.4.300.0100.03019.16
5.4.290.0030.04319.13
5.4.280.0000.07719.10
5.4.270.0130.02719.02
5.4.260.0070.03719.04
5.4.250.0100.04019.12
5.4.240.0000.04019.11
5.4.230.0030.03318.96
5.4.220.0000.04318.84
5.4.210.0030.03019.15
5.4.200.0030.04018.95
5.4.190.0000.04719.20
5.4.180.0070.03718.87
5.4.170.0070.03718.86
5.4.160.0030.03718.93
5.4.150.0000.03319.07
5.4.140.0000.04316.48
5.4.130.0070.03316.34
5.4.120.0100.03716.46
5.4.110.0030.03716.41
5.4.100.0030.06716.45
5.4.90.0070.07316.49
5.4.80.0030.07316.40
5.4.70.0070.06016.51
5.4.60.0070.07016.49
5.4.50.0030.08016.45
5.4.40.0030.07316.30
5.4.30.0130.05316.48
5.4.20.0170.05016.33
5.4.10.0030.04316.48
5.4.00.0070.07015.73
5.3.290.0070.03314.68
5.3.280.0030.03314.64
5.3.270.0000.04014.70
5.3.260.0030.04014.58
5.3.250.0030.04014.63
5.3.240.0100.04714.62
5.3.230.0000.04014.63
5.3.220.0000.03314.66
5.3.210.0000.04014.62
5.3.200.0030.04314.65
5.3.190.0230.06314.73
5.3.180.0130.02714.73
5.3.170.0030.08014.62
5.3.160.0100.04314.66
5.3.150.0030.05014.66
5.3.140.0100.07014.55
5.3.130.0100.07714.58
5.3.120.0070.05314.61
5.3.110.0100.06314.59
5.3.100.0100.06714.01
5.3.90.0100.04314.05
5.3.80.0030.08014.05
5.3.70.0130.07014.03
5.3.60.0030.05314.01
5.3.50.0100.03014.04
5.3.40.0070.04713.87
5.3.30.0030.04314.04
5.3.20.0070.07013.66
5.3.10.0000.04013.68
5.3.00.0030.05713.72
5.2.170.0070.05711.07
5.2.160.0000.04311.10
5.2.150.0100.05711.09
5.2.140.0000.06711.07
5.2.130.0030.03311.18
5.2.120.0030.03011.22
5.2.110.0000.04711.20
5.2.100.0100.03011.13
5.2.90.0030.03711.04
5.2.80.0100.06010.98
5.2.70.0030.05711.01
5.2.60.0000.03311.11
5.2.50.0030.04011.11
5.2.40.0070.03311.04
5.2.30.0030.05711.02
5.2.20.0030.06010.97
5.2.10.0070.05710.95
5.2.00.0030.04010.70
5.1.60.0070.0539.87
5.1.50.0030.05010.10
5.1.40.0070.05310.00
5.1.30.0000.06010.42
5.1.20.0070.05310.48
5.1.10.0030.02710.22
5.1.00.0000.05710.20
5.0.50.0030.0438.65
5.0.40.0030.0478.29
5.0.30.0030.0578.11
5.0.20.0030.0438.09
5.0.10.0030.0378.07
5.0.00.0130.0538.25
4.4.90.0070.0177.07
4.4.80.0070.0207.07
4.4.70.0000.0377.07
4.4.60.0000.0377.07
4.4.50.0070.0207.07
4.4.40.0000.0577.07
4.4.30.0030.0237.07
4.4.20.0070.0177.07
4.4.10.0000.0377.07
4.4.00.0000.0377.07
4.3.110.0000.0337.07
4.3.100.0130.0277.07
4.3.90.0000.0237.07
4.3.80.0000.0507.07
4.3.70.0070.0207.07
4.3.60.0030.0237.07
4.3.50.0100.0177.07
4.3.40.0070.0477.07
4.3.30.0070.0307.07
4.3.20.0000.0377.07
4.3.10.0030.0337.07
4.3.00.0030.0307.07

preferences:
46.73 ms | 401 KiB | 5 Q