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($it); } if ($assoc) { $it = get_object_vars($it); } else { $assoc = $it === array_values($it); } $data = array(); foreach ($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($value); case is_bool($value): return $value ? 'true' : 'false'; case is_int($value) || is_float($value): return $value; case is_string($value) && preg_match('//u', $value): return '"' . _js_uc_esc($value) . '"'; default: return 'null'; } } 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)
8.3.60.0060.01218.56
8.3.50.0100.00721.92
8.3.40.0040.01118.93
8.3.30.0110.00318.67
8.3.20.0030.00618.61
8.3.10.0000.00920.66
8.3.00.0060.00319.38
8.2.180.0070.01416.63
8.2.170.0070.00722.96
8.2.160.0070.00722.08
8.2.150.0000.00824.18
8.2.140.0090.00024.66
8.2.130.0000.00826.16
8.2.120.0050.00319.75
8.2.110.0070.00321.17
8.2.100.0030.00917.84
8.2.90.0040.00419.22
8.2.80.0060.00318.05
8.2.70.0060.00317.75
8.2.60.0040.00418.05
8.2.50.0030.00518.07
8.2.40.0030.00518.13
8.2.30.0070.00019.93
8.2.20.0000.00717.71
8.2.10.0040.00417.70
8.2.00.0040.00417.87
8.1.280.0110.00325.92
8.1.270.0080.00023.99
8.1.260.0120.00626.35
8.1.250.0060.00328.09
8.1.240.0040.00820.81
8.1.230.0000.01221.02
8.1.220.0060.00318.77
8.1.210.0050.00319.09
8.1.200.0060.00317.35
8.1.190.0040.00417.65
8.1.180.0080.00018.10
8.1.170.0050.00318.93
8.1.160.0050.00218.82
8.1.150.0000.00818.71
8.1.140.0040.00417.63
8.1.130.0000.00717.89
8.1.120.0000.00717.42
8.1.110.0000.00717.41
8.1.100.0000.00717.51
8.1.90.0070.00017.59
8.1.80.0000.00817.54
8.1.70.0030.00317.55
8.1.60.0030.00517.66
8.1.50.0040.00417.43
8.1.40.0050.00317.55
8.1.30.0040.00417.71
8.1.20.0080.00017.79
8.1.10.0030.00517.65
8.1.00.0040.00417.57
8.0.300.0040.00420.07
8.0.290.0000.00816.88
8.0.280.0030.00318.43
8.0.270.0000.00817.34
8.0.260.0040.00416.82
8.0.250.0040.00417.11
8.0.240.0000.00817.07
8.0.230.0070.00017.07
8.0.220.0030.00317.03
8.0.210.0000.00716.95
8.0.200.0000.00717.15
8.0.190.0040.00417.01
8.0.180.0000.00716.92
8.0.170.0060.00317.00
8.0.160.0040.00417.03
8.0.150.0000.00816.89
8.0.140.0040.00416.92
8.0.130.0030.00313.45
8.0.120.0030.00516.86
8.0.110.0000.00817.09
8.0.100.0050.00216.96
8.0.90.0040.00416.97
8.0.80.0000.01517.05
8.0.70.0040.00417.02
8.0.60.0080.00016.89
8.0.50.0020.00516.88
8.0.30.0140.00617.22
8.0.20.0130.00617.40
8.0.10.0070.00017.05
8.0.00.0110.00616.80
7.4.330.0030.00314.81
7.4.320.0000.00716.66
7.4.300.0060.00016.58
7.4.290.0070.00016.58
7.4.280.0080.00016.53
7.4.270.0000.00816.58
7.4.260.0070.00013.38
7.4.250.0050.00516.68
7.4.240.0060.00316.68
7.4.230.0070.00016.42
7.4.220.0150.00316.63
7.4.210.0060.01416.60
7.4.200.0000.00716.64
7.4.190.0070.00016.56
7.4.160.0090.00916.55
7.4.150.0110.00617.40
7.4.140.0090.01417.86
7.4.130.0100.00716.48
7.4.120.0030.01516.60
7.4.110.0180.00616.71
7.4.100.0060.01416.68
7.4.90.0030.01316.69
7.4.80.0140.00319.04
7.4.70.0120.00916.30
7.4.60.0110.00616.39
7.4.50.0030.00316.74
7.4.40.0060.01022.27
7.4.30.0070.01016.53
7.4.00.0040.00815.30
7.3.330.0030.00313.29
7.3.320.0000.00513.19
7.3.310.0040.00416.23
7.3.300.0070.00016.36
7.3.290.0140.00016.36
7.3.280.0060.01316.34
7.3.270.0070.01117.40
7.3.260.0100.01018.24
7.3.250.0070.01316.30
7.3.240.0060.01216.31
7.3.230.0130.00716.48
7.3.210.0130.00316.32
7.3.200.0130.00319.39
7.3.190.0140.00916.29
7.3.180.0060.01516.38
7.3.170.0070.00716.43
7.3.160.0050.01116.29
7.3.120.0040.01214.80
7.3.10.0000.01516.56
7.3.00.0060.01116.68
7.2.330.0030.01416.52
7.2.320.0090.00916.52
7.2.310.0040.02016.54
7.2.300.0130.00416.80
7.2.290.0040.01316.54
7.2.130.0090.00916.84
7.2.120.0090.00616.79
7.2.110.0050.00616.65
7.2.100.0040.00916.88
7.2.90.0090.00816.78
7.2.80.0050.01016.48
7.2.70.0090.00816.83
7.2.60.0070.01016.79
7.2.50.0080.00816.85
7.2.40.0060.00716.86
7.2.30.0050.00816.88
7.2.20.0090.00616.70
7.2.10.0030.01216.83
7.2.00.0020.01216.80
7.1.250.0130.00315.77
7.1.230.0120.00415.58
7.1.220.0110.00015.59
7.1.210.0090.00615.62
7.1.200.0040.00915.61
7.1.190.0030.01015.58
7.1.180.0040.01115.75
7.1.170.0070.00315.55
7.1.160.0100.00315.83
7.1.150.0030.00615.64
7.1.140.0070.00715.81
7.1.130.0060.00615.70
7.1.120.0030.01015.92
7.1.110.0090.00615.76
7.1.100.0100.00315.82
7.1.90.0040.01115.34
7.1.80.0080.00415.90
7.1.70.0030.01016.27
7.1.60.0080.00817.71
7.1.50.0050.01416.30
7.1.40.0110.00815.72
7.1.30.0090.00615.80
7.1.20.0070.01015.63
7.1.10.0040.00715.70
7.1.00.0000.02619.05
7.0.310.0080.00415.46
7.0.300.0070.00715.09
7.0.290.0030.01015.12
7.0.280.0100.00315.31
7.0.270.0060.00615.28
7.0.260.0040.00815.12
7.0.250.0070.00715.28
7.0.240.0090.00615.30
7.0.230.0070.00715.54
7.0.220.0070.00415.45
7.0.210.0030.00615.41
7.0.200.0020.01016.08
7.0.190.0000.00915.41
7.0.180.0080.00315.45
7.0.170.0060.00315.34
7.0.160.0070.00715.36
7.0.150.0030.00715.34
7.0.140.0030.04218.72
7.0.130.0060.00615.52
7.0.120.0000.01215.28
7.0.110.0000.01215.48
7.0.100.0030.00715.54
7.0.90.0170.04017.65
7.0.80.0290.02617.71
7.0.70.0370.04217.66
7.0.60.0250.02617.73
7.0.50.0320.03917.84
7.0.40.0030.04216.51
7.0.30.0080.04316.65
7.0.20.0070.04316.80
7.0.10.0100.03716.72
7.0.00.0070.03916.76
5.6.380.0100.00714.46
5.6.370.0090.00614.17
5.6.360.0070.00713.95
5.6.350.0030.01314.39
5.6.340.0060.00614.36
5.6.330.0060.00914.13
5.6.320.0110.00414.35
5.6.310.0060.00614.50
5.6.300.0090.00014.12
5.6.290.0000.00714.04
5.6.280.0040.04017.75
5.6.270.0070.00714.48
5.6.260.0060.00914.39
5.6.250.0070.00714.28
5.6.240.0050.02917.48
5.6.230.0000.03317.59
5.6.220.0040.04717.36
5.6.210.0090.03517.31
5.6.200.0070.02317.58
5.6.190.0030.03217.73
5.6.180.0080.03717.60
5.6.170.0050.04817.74
5.6.160.0080.04717.59
5.6.150.0090.04017.73
5.6.140.0120.03817.61
5.6.130.0070.04517.69
5.6.120.0070.04717.59
5.6.110.0090.02717.66
5.6.100.0110.04017.71
5.6.90.0030.05017.73
5.6.80.0100.04017.47
5.6.70.0060.03417.19
5.6.60.0050.04517.19
5.6.50.0070.04217.35
5.6.40.0050.04017.27
5.6.30.0100.03817.26
5.6.20.0120.03817.32
5.6.10.0110.03217.24
5.6.00.0100.02817.45
5.5.380.0060.03016.61
5.5.370.0070.02316.61
5.5.360.0070.04716.64
5.5.350.0130.03716.62
5.5.340.0050.02816.85
5.5.330.0120.03716.81
5.5.320.0070.04516.82
5.5.310.0080.04216.82
5.5.300.0120.04016.82
5.5.290.0000.03516.85
5.5.280.0060.03816.85
5.5.270.0020.03216.84
5.5.260.0180.03116.84
5.5.250.0100.02716.74
5.5.240.0080.02616.48
5.5.230.0040.04416.53
5.5.220.0100.03816.55
5.5.210.0090.04016.46
5.5.200.0130.03516.40
5.5.190.0130.03716.46
5.5.180.0090.02116.50
5.5.170.0190.00014.24
5.5.160.0070.04216.50
5.5.150.0050.04516.52
5.5.140.0100.02816.53
5.5.130.0070.03916.50
5.5.120.0080.04116.49
5.5.110.0060.03616.44
5.5.100.0070.03216.37
5.5.90.0100.03916.39
5.5.80.0090.03816.44
5.5.70.0080.02516.43
5.5.60.0070.02316.43
5.5.50.0070.03016.44
5.5.40.0090.02316.47
5.5.30.0060.04316.41
5.5.20.0080.03516.40
5.5.10.0090.03816.46
5.5.00.0070.04116.38
5.4.450.0050.03716.04
5.4.440.0090.03916.07
5.4.430.0110.02216.08
5.4.420.0130.02816.03
5.4.410.0110.03716.02
5.4.400.0090.03915.91
5.4.390.0060.03715.98
5.4.380.0100.03515.82
5.4.370.0100.03715.85
5.4.360.0100.03815.96
5.4.350.0100.02415.96
5.4.340.0120.02115.98
5.4.330.0070.00712.79
5.4.320.0100.03015.92
5.4.310.0060.02316.01
5.4.300.0060.03915.95
5.4.290.0070.04315.91
5.4.280.0100.02315.82
5.4.270.0070.03515.96
5.4.260.0100.02715.96
5.4.250.0130.02215.91
5.4.240.0110.01715.91
5.4.230.0090.03815.90
5.4.220.0120.02915.95
5.4.210.0110.03715.98
5.4.200.0090.04215.98
5.4.190.0050.04216.00
5.4.180.0070.03715.83
5.4.170.0110.03515.86
5.4.160.0100.03215.82
5.4.150.0050.04616.00
5.4.140.0090.03614.65
5.4.130.0080.02514.64
5.4.120.0090.03414.61
5.4.110.0060.02614.62
5.4.100.0060.03614.67
5.4.90.0090.03614.68
5.4.80.0060.04014.59
5.4.70.0070.02714.61
5.4.60.0090.03814.63
5.4.50.0090.03814.59
5.4.40.0110.02314.65
5.4.30.0070.03714.59
5.4.20.0060.03514.59
5.4.10.0060.03914.56
5.4.00.0070.04014.31
5.3.290.0120.03013.77
5.3.280.0080.04013.74
5.3.270.0100.04013.78
5.3.260.0120.03713.76
5.3.250.0030.03713.74
5.3.240.0030.03513.78
5.3.230.0050.04113.76
5.3.220.0110.03713.65
5.3.210.0100.03713.71
5.3.200.0100.03313.65
5.3.190.0050.02513.68
5.3.180.0050.04213.75
5.3.170.0100.03813.75
5.3.160.0090.02013.74
5.3.150.0000.03113.70
5.3.140.0090.02213.70
5.3.130.0120.03513.75
5.3.120.0070.03813.71
5.3.110.0070.03813.68
5.3.100.0060.04413.45
5.3.90.0080.02313.44
5.3.80.0070.02013.47
5.3.70.0090.01813.39
5.3.60.0080.03813.38
5.3.50.0070.02513.41
5.3.40.0080.01913.37
5.3.30.0060.04013.41
5.3.20.0070.01713.21
5.3.10.0070.02613.24
5.3.00.0060.03113.19
5.2.170.0050.04111.99
5.2.160.0060.02311.99
5.2.150.0080.02312.03
5.2.140.0080.02511.94
5.2.130.0040.03111.95
5.2.120.0090.03011.91
5.2.110.0070.01811.99
5.2.100.0060.02311.96
5.2.90.0070.02211.93
5.2.80.0030.03011.89
5.2.70.0070.02212.01
5.2.60.0080.01611.88
5.2.50.0030.03311.87
5.2.40.0060.01611.92
5.2.30.0060.01311.90
5.2.20.0050.02011.94
5.2.10.0030.01811.81
5.2.00.0020.01811.75
5.1.60.0030.01911.33
5.1.50.0060.02511.34
5.1.40.0050.01311.45
5.1.30.0060.01311.58
5.1.20.0070.02511.57
5.1.10.0050.01211.39
5.1.00.0060.01311.47
5.0.50.0080.00810.72
5.0.40.0030.01010.63
5.0.30.0050.01810.58
5.0.20.0000.01510.44
5.0.10.0020.01210.50
5.0.00.0040.01710.55
4.4.90.0050.00910.08
4.4.80.0020.01010.08
4.4.70.0060.01810.08
4.4.60.0030.01310.08
4.4.50.0030.01210.08
4.4.40.0020.01910.08
4.4.30.0030.00810.08
4.4.20.0050.00710.08
4.4.10.0030.01010.08
4.4.00.0000.01810.08
4.3.110.0040.00810.08
4.3.100.0020.01110.08
4.3.90.0020.01010.08
4.3.80.0030.01710.08
4.3.70.0040.00810.08
4.3.60.0010.01010.08
4.3.50.0040.01010.08
4.3.40.0050.01110.08
4.3.30.0000.01210.08
4.3.20.0030.00810.08
4.3.10.0010.01010.08
4.3.00.0030.01810.08

preferences:
50.27 ms | 401 KiB | 5 Q