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) { $k = (string)$k; if (preg_match('//u', $k)) { $k = _js_enc_value($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 $value === null: case is_resource($value): return 'null'; case is_bool($value): return $value ? 'true' : 'false'; case is_string($value) && preg_match('//u', $value): return '"' . _js_uc_esc($value) . '"'; default: return $value; } } function _js_uc_esc($value) { $pattern = "@[\x08-\x0a\x0c\x0d\\\\\"/]|([^\x08-\x0a\x0c\x0d\x20-\x7f\\\\\"/])++@u"; return preg_replace_callback($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], "\x08\x09\x0a\x0c\x0d\\\"/"); } } } $var = array( array( 'text', 1, 1.1, true, false, null, array(), new stdClass, ), array( '&\'/"' => "\r\n\t", '' => '', ), array( '0' => 'hoge', '1' => 'foo', ), (object)array( '0' => 'hoge', '1' => 'foo', ), array( '0' => 'hoge', '2' => 'foo', ), (object)array( '0' => 'hoge', '2' => 'foo', ), ); var_dump(json_encode($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)
8.3.60.0070.00718.50
8.3.50.0120.00722.00
8.3.40.0180.00018.97
8.3.30.0110.00419.08
8.3.20.0040.00420.34
8.3.10.0080.00022.09
8.3.00.0040.00422.51
8.2.180.0130.00618.67
8.2.170.0090.00622.96
8.2.160.0140.00021.11
8.2.150.0080.00024.18
8.2.140.0060.00324.66
8.2.130.0000.00726.16
8.2.120.0000.01819.49
8.2.110.0060.00322.23
8.2.100.0120.00019.58
8.2.90.0040.00419.14
8.2.80.0040.00418.04
8.2.70.0060.00317.63
8.2.60.0060.00317.93
8.2.50.0030.00518.07
8.2.40.0040.00418.16
8.2.30.0050.00218.01
8.2.20.0080.00017.64
8.2.10.0000.00817.81
8.2.00.0040.00417.73
8.1.280.0070.01025.92
8.1.270.0080.00023.72
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0090.00023.91
8.1.230.0090.00319.13
8.1.220.0040.00417.74
8.1.210.0040.00418.77
8.1.200.0050.00517.47
8.1.190.0030.00517.54
8.1.180.0040.00418.10
8.1.170.0060.00318.51
8.1.160.0060.00322.13
8.1.150.0050.00318.76
8.1.140.0000.00917.51
8.1.130.0030.00317.93
8.1.120.0000.00717.44
8.1.110.0100.00017.50
8.1.100.0000.00717.45
8.1.90.0040.00417.39
8.1.80.0000.00717.38
8.1.70.0000.00717.54
8.1.60.0030.00517.69
8.1.50.0030.00617.58
8.1.40.0050.00317.58
8.1.30.0060.00317.73
8.1.20.0040.00417.70
8.1.10.0050.00217.57
8.1.00.0040.00417.55
8.0.300.0040.00418.77
8.0.290.0040.00417.28
8.0.280.0040.00418.47
8.0.270.0070.00017.22
8.0.260.0070.00016.95
8.0.250.0030.00317.09
8.0.240.0000.00816.94
8.0.230.0040.00416.98
8.0.220.0030.00317.01
8.0.210.0070.00017.02
8.0.200.0000.00716.94
8.0.190.0040.00417.10
8.0.180.0000.00717.06
8.0.170.0000.00816.98
8.0.160.0060.00317.04
8.0.150.0090.00416.88
8.0.140.0050.00216.90
8.0.130.0000.00713.38
8.0.120.0060.00316.88
8.0.110.0000.00716.89
8.0.100.0070.00017.01
8.0.90.0040.00416.92
8.0.80.0110.00417.02
8.0.70.0040.00417.14
8.0.60.0070.00016.93
8.0.50.0050.00217.03
8.0.30.0080.01117.13
8.0.20.0180.00517.41
8.0.10.0000.00717.18
8.0.00.0140.00516.93
7.4.330.0000.00515.09
7.4.320.0040.00416.56
7.4.300.0070.00016.64
7.4.290.0070.00016.56
7.4.280.0070.00016.67
7.4.270.0040.00416.52
7.4.260.0030.00316.65
7.4.250.0040.00416.65
7.4.240.0040.00416.69
7.4.230.0000.00816.46
7.4.220.0100.01016.70
7.4.210.0050.01016.59
7.4.200.0000.00716.52
7.4.190.0000.00816.47
7.4.160.0170.00016.52
7.4.150.0190.00017.40
7.4.140.0090.00817.86
7.4.130.0130.00616.55
7.4.120.0080.01016.67
7.4.110.0170.00016.48
7.4.100.0100.00716.58
7.4.90.0120.02416.50
7.4.80.0160.00616.58
7.4.70.0030.01916.48
7.4.60.0120.00916.52
7.4.50.0000.00816.20
7.4.40.0100.00722.77
7.4.30.0090.00616.61
7.4.00.0100.00614.72
7.3.330.0020.00213.38
7.3.320.0000.00613.45
7.3.310.0030.00316.52
7.3.300.0060.00016.38
7.3.290.0030.01116.36
7.3.280.0090.00916.41
7.3.270.0120.00617.40
7.3.260.0100.01416.29
7.3.250.0130.00416.52
7.3.240.0110.00716.33
7.3.230.0080.00816.39
7.3.210.0060.01016.28
7.3.200.0030.01719.39
7.3.190.0090.00916.47
7.3.180.0120.00616.27
7.3.170.0120.00316.40
7.3.160.0080.00816.51
7.3.120.0030.01014.85
7.2.330.0070.01016.68
7.2.320.0080.00816.55
7.2.310.0090.00916.56
7.2.300.0070.01016.65
7.2.290.0030.01816.57
7.2.00.0000.01218.71
7.1.100.0040.01117.79
7.1.70.0000.01416.74
7.1.60.0140.01019.82
7.1.50.0070.01416.55
7.1.00.0000.08022.35
7.0.200.0130.00316.77
7.0.140.0030.07321.93
7.0.90.0030.06019.98
7.0.80.0000.04719.90
7.0.70.0000.05019.87
7.0.60.0100.08019.94
7.0.50.0070.05020.28
7.0.40.0030.05320.17
7.0.30.0070.04320.15
7.0.20.0100.06320.05
7.0.10.0070.07020.02
7.0.00.0070.08020.07
5.6.280.0070.07021.10
5.6.240.0030.04020.63
5.6.230.0100.05320.66
5.6.220.0070.04720.48
5.6.210.0030.08320.61
5.6.200.0100.05021.12
5.6.190.0030.06021.10
5.6.180.0000.06021.09
5.6.170.0100.08021.07
5.6.160.0070.05021.12
5.6.150.0070.08021.03
5.6.140.0100.04321.10
5.6.130.0070.08321.09
5.6.120.0030.06721.05
5.6.110.0070.05721.10
5.6.100.0100.07721.05
5.6.90.0070.08021.13
5.6.80.0030.04720.45
5.6.70.0030.08720.47
5.6.60.0170.06320.34
5.6.50.0100.07020.55
5.6.40.0070.08320.55
5.6.30.0200.06320.50
5.6.20.0030.05020.50
5.6.10.0130.04720.39
5.6.00.0170.06720.48
5.5.380.0030.04020.43
5.5.370.0100.07720.54
5.5.360.0170.07720.30
5.5.350.0030.08320.42
5.5.340.0070.07320.91
5.5.330.0030.07720.95
5.5.320.0100.03720.66
5.5.310.0030.05320.94
5.5.300.0000.08720.91
5.5.290.0070.08320.88
5.5.280.0100.08020.89
5.5.270.0000.07320.65
5.5.260.0130.07020.91
5.5.250.0030.07320.64
5.5.240.0130.06320.12
5.5.230.0100.08020.19
5.5.220.0130.07320.17
5.5.210.0070.07720.30
5.5.200.0100.07320.16
5.5.190.0130.07720.13
5.5.180.0100.05020.27
5.5.160.0070.07320.29
5.5.150.0030.08720.23
5.5.140.0030.08020.26
5.5.130.0030.04720.00
5.5.120.0100.08020.29
5.5.110.0170.06720.27
5.5.100.0130.07019.95
5.5.90.0200.07020.09
5.5.80.0100.07020.18
5.5.70.0030.07320.11
5.5.60.0170.03320.07
5.5.50.0130.07020.10
5.5.40.0070.04720.16
5.5.30.0130.07320.08
5.5.20.0030.05320.11
5.5.10.0030.08020.12
5.5.00.0070.03720.13
5.4.450.0100.07319.38
5.4.440.0170.07319.17
5.4.430.0070.07319.41
5.4.420.0070.08019.46
5.4.410.0030.08019.04
5.4.400.0030.04319.05
5.4.390.0030.06719.13
5.4.380.0100.06319.18
5.4.370.0100.06718.85
5.4.360.0030.08019.06
5.4.350.0100.04018.88
5.4.340.0070.07319.09
5.4.320.0030.07719.12
5.4.310.0100.06019.11
5.4.300.0030.07719.23
5.4.290.0170.06319.13
5.4.280.0030.07019.09
5.4.270.0100.06319.12
5.4.260.0130.06719.03
5.4.250.0130.06318.84
5.4.240.0030.08019.03
5.4.230.0100.06718.94
5.4.220.0130.07019.23
5.4.210.0100.06719.22
5.4.200.0030.08019.15
5.4.190.0070.07319.03
5.4.180.0070.07718.93
5.4.170.0070.06019.08
5.4.160.0070.06718.86
5.4.150.0100.07019.07
5.4.140.0000.03716.20
5.4.130.0170.02716.50
5.4.120.0100.03716.27
5.4.110.0070.07316.48
5.4.100.0070.05716.57
5.4.90.0030.07716.56
5.4.80.0100.06716.46
5.4.70.0070.06716.46
5.4.60.0200.05716.37
5.4.50.0070.04316.31
5.4.40.0030.07716.53
5.4.30.0000.08016.42
5.4.20.0070.07316.33
5.4.10.0100.07016.33
5.4.00.0070.05715.82
5.3.290.0170.06714.66
5.3.280.0070.07314.73
5.3.270.0170.05714.77
5.3.260.0070.04014.78
5.3.250.0070.03714.57
5.3.240.0030.06714.57
5.3.230.0070.04714.60
5.3.220.0000.04714.66
5.3.210.0070.07714.57
5.3.200.0070.07014.61
5.3.190.0070.07014.70
5.3.180.0030.07014.64
5.3.170.0070.08014.61
5.3.160.0070.05314.71
5.3.150.0200.06714.71
5.3.140.0070.06714.70
5.3.130.0100.07714.58
5.3.120.0070.07714.54
5.3.110.0000.05314.50
5.3.100.0100.07014.18
5.3.90.0070.07014.18
5.3.80.0130.06714.02
5.3.70.0030.07713.97
5.3.60.0070.06313.93
5.3.50.0100.07013.88
5.3.40.0130.04013.88
5.3.30.0000.05713.91
5.3.20.0070.06013.81
5.3.10.0100.06713.79
5.3.00.0070.06713.76
5.2.170.0100.04011.08
5.2.160.0000.04011.30
5.2.150.0030.03311.25
5.2.140.0070.03011.23
5.2.130.0070.03011.16
5.2.120.0030.06311.27
5.2.110.0070.06311.22
5.2.100.0030.06011.06
5.2.90.0070.04311.07
5.2.80.0130.05711.26
5.2.70.0070.03711.14
5.2.60.0000.06311.11
5.2.50.0070.04311.19
5.2.40.0100.03011.09
5.2.30.0100.06010.91
5.2.20.0070.05011.11
5.2.10.0000.04710.95
5.2.00.0070.06010.78
5.1.60.0100.03010.53
5.1.50.0000.02710.53
5.1.40.0070.05710.53
5.1.30.0030.05710.53
5.1.20.0030.05710.53
5.1.10.0000.03010.53
5.1.00.0030.03310.53
5.0.50.0000.05010.53
5.0.40.0000.03010.53
5.0.30.0030.03310.53
5.0.20.0030.04310.53
5.0.10.0030.04710.53
5.0.00.0000.05010.53
4.4.90.0000.02710.53
4.4.80.0030.03010.53
4.4.70.0000.03010.53
4.4.60.0030.02010.53
4.4.50.0030.02710.53
4.4.40.0030.05310.53
4.4.30.0000.02710.53
4.4.20.0070.03310.53
4.4.10.0030.03310.53
4.4.00.0000.04310.53
4.3.110.0000.03310.53
4.3.100.0030.02310.53
4.3.90.0030.02310.53
4.3.80.0070.02010.53
4.3.70.0030.03010.53
4.3.60.0030.02010.53
4.3.50.0000.03710.53
4.3.40.0000.04310.53
4.3.30.0070.01310.53
4.3.20.0000.03710.53
4.3.10.0030.03010.53
4.3.00.0000.03710.53

preferences:
58.96 ms | 400 KiB | 5 Q