3v4l.org

run code in 300+ PHP versions simultaneously
<?php $html = <<<HTML <div> <p>Paragraph one is okay </p> <h2>This will work without problem</h2> <p>Paragraph two is okay </p> <h2><a href="#">This heading has anchor</a></h2> <p>Paragraph one is okay </p> <h2> This heading start with space</h2> <p>Paragraph two is okay </p> <h3>1. <a href="https://www.example1.com/">This wont work</a></h3> <p>Paragraph one is okay </p> <h3>2. <a href="https://www.example2.com/">Not working</a></h3> <p>Paragraph two is okay </p> <h3>3. Neither this one</h3> <h3>But this works again</h3> </div> HTML; $dom = new DOMDocument; $dom->loadHTML($html, LIBXML_HTML_NOIMPLIED | LIBXML_HTML_NODEFDTD); $xpath = new DOMXPath($dom); foreach ($xpath->query("//h2 | //h3") as $node) { if (preg_match('~^\s*(?:\d+\.)?\s*\K\S+(?:\s+\S+){1,2}~', $node->nodeValue, $m)) { $node->setAttribute('id', str_replace(' ', '-', strtolower($m[0]))); } } echo $dom->saveHTML();

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)
8.4.130.0130.00718.15
8.4.120.0120.00822.73
8.4.110.0340.01019.05
8.4.100.0320.00918.42
8.4.90.0320.00719.00
8.4.80.0310.00519.01
8.4.70.0200.00418.64
8.4.60.0190.00518.47
8.4.50.0210.00518.57
8.4.40.0230.01118.25
8.4.30.0290.00918.30
8.4.20.0300.00518.27
8.4.10.0270.00618.71
8.3.260.0090.01116.97
8.3.250.0120.00419.13
8.3.240.0160.00617.75
8.3.230.0220.00516.88
8.3.220.0240.00717.64
8.3.210.0220.00617.58
8.3.200.0270.00817.11
8.3.190.0250.00617.07
8.3.180.0230.00617.44
8.3.170.0330.00717.03
8.3.160.0260.00817.96
8.3.150.0230.00817.21
8.3.140.0210.00617.13
8.3.130.0170.00617.06
8.3.120.0190.00617.65
8.3.110.0170.00718.00
8.3.100.0180.00718.71
8.3.90.0170.00519.49
8.3.80.0170.00417.10
8.3.70.0180.00617.15
8.3.60.0210.00517.05
8.3.50.0170.00620.04
8.3.40.0220.00618.55
8.3.30.0190.00718.36
8.3.20.0230.00619.57
8.3.10.0130.00319.76
8.3.00.0220.00720.08
8.2.290.0220.00818.14
8.2.280.0250.00617.76
8.2.270.0250.00817.15
8.2.260.0220.00917.19
8.2.250.0250.00717.42
8.2.240.0240.00617.59
8.2.230.0180.00618.38
8.2.220.0170.00622.04
8.2.210.0170.00619.36
8.2.200.0200.00717.07
8.2.190.0200.00517.05
8.2.180.0210.00719.18
8.2.170.0260.00818.54
8.2.160.0250.00719.37
8.2.150.0210.00320.02
8.2.140.0190.00519.66
8.2.130.0230.00620.09
8.2.120.0210.00519.00
8.2.110.0210.00519.24
8.2.100.0190.00618.12
8.2.90.0240.00718.63
8.2.80.0250.00418.31
8.2.70.0180.00518.23
8.2.60.0180.00718.26
8.2.50.0210.00718.21
8.2.40.0230.00618.27
8.2.30.0220.00618.13
8.2.20.0190.00518.70
8.2.10.0220.00618.87
8.2.00.0210.00618.42
8.1.330.0220.00816.95
8.1.320.0240.00617.00
8.1.310.0260.00617.14
8.1.300.0200.00817.13
8.1.290.0260.00617.22
8.1.280.0310.00718.83
8.1.270.0220.00619.45
8.1.260.0180.00719.98
8.1.250.0200.00620.37
8.1.240.0210.00719.38
8.1.230.0270.00719.48
8.1.220.0260.00717.98
8.1.210.0260.00518.13
8.1.200.0230.00717.80
8.1.190.0260.00617.77
8.1.180.0210.00517.85
8.1.170.0220.00518.16
8.1.160.0220.00618.13
8.1.150.0180.00418.30
8.1.140.0160.00618.64
8.1.130.0190.00617.81
8.1.120.0260.00717.94
8.1.110.0210.00617.92
8.1.100.0190.00817.78
8.1.90.0200.00617.88
8.1.80.0250.00817.85
8.1.70.0270.00717.85
8.1.60.0260.00618.00
8.1.50.0240.00917.95
8.1.40.0250.00717.98
8.1.30.0220.00918.07
8.1.20.0230.00618.06
8.1.10.0210.00717.93
8.1.00.0150.00617.89
8.0.300.0200.00417.64
8.0.290.0290.00617.17
8.0.280.0270.00617.57
8.0.270.0260.00817.64
8.0.260.0280.00717.20
8.0.250.0210.00717.16
8.0.240.0220.00717.34
8.0.230.0230.00617.31
8.0.220.0180.00417.24
8.0.210.0210.00417.14
8.0.200.0150.00617.40
8.0.190.0240.00617.33
8.0.180.0230.00617.76
8.0.170.0220.00717.18
8.0.160.0140.00517.28
8.0.150.0180.00617.21
8.0.140.0130.00517.27
8.0.130.0160.00316.34
8.0.120.0120.00617.26
8.0.110.0130.00417.29
8.0.100.0120.00517.27
8.0.90.0230.00517.25
8.0.80.0200.00817.28
8.0.70.0220.00517.22
8.0.60.0180.00617.21
8.0.50.0210.00517.16
8.0.30.0230.00817.41
8.0.20.0230.00817.39
8.0.10.0220.00617.40
8.0.00.0230.00917.29
7.4.330.0200.00816.64
7.4.320.0240.00516.97
7.4.300.0160.00516.92
7.4.290.0160.00517.09
7.4.280.0140.00316.92
7.4.270.0150.00516.92
7.4.260.0170.00516.21
7.4.250.0170.00416.94
7.4.240.0150.00416.94
7.4.230.0160.00316.85
7.4.220.0120.00516.85
7.4.210.0120.00917.00
7.4.200.0140.00616.97
7.4.190.0210.00416.95
7.4.180.0190.00516.89
7.4.160.0200.00716.96
7.4.150.0200.00616.83
7.4.140.0210.00516.88
7.4.130.0170.00517.02
7.4.120.0210.00416.88
7.4.110.0190.00516.79
7.4.100.0170.00717.00
7.4.90.0150.00716.92
7.4.80.0170.00717.42
7.4.70.0160.00716.94
7.4.60.0220.00416.84
7.4.50.0210.00516.75
7.4.40.0190.00616.78
7.4.30.0190.00616.79
7.4.20.0170.00816.80
7.4.10.0170.00816.79
7.4.00.0130.00716.82
7.3.330.0110.00416.63
7.3.320.0120.00415.90
7.3.310.0130.00416.68
7.3.300.0150.00516.79
7.3.290.0170.00516.60
7.3.280.0240.00616.42
7.3.270.0200.00516.51
7.3.260.0180.00516.66
7.3.250.0200.00417.24
7.3.240.0140.00717.01
7.3.230.0180.00616.61
7.3.220.0210.00416.49
7.3.210.0200.00416.72
7.3.200.0160.00816.73
7.3.190.0200.00316.62
7.3.180.0180.00716.61
7.3.170.0170.00716.85
7.3.160.0180.00916.64
7.3.150.0170.00816.57
7.3.140.0210.00516.63
7.3.130.0180.00716.59
7.3.120.0180.00516.60
7.3.110.0170.00516.61
7.3.100.0160.00816.61
7.3.90.0170.00716.83
7.3.80.0200.00616.62
7.3.70.0180.00516.60
7.3.60.0210.00416.77
7.3.50.0220.00516.64
7.3.40.0190.00817.17
7.3.30.0220.00516.70
7.3.20.0170.00918.17
7.3.10.0190.00617.88
7.3.00.0240.00417.97
7.2.340.0190.00616.78
7.2.330.0160.00816.93
7.2.320.0180.00616.94
7.2.310.0210.00516.95
7.2.300.0190.00817.65
7.2.290.0170.00717.42
7.2.280.0190.00716.80
7.2.270.0170.00816.81
7.2.260.0160.00816.85
7.2.250.0160.00416.83
7.2.240.0170.00617.21
7.2.230.0160.00417.32
7.2.220.0200.00516.76
7.2.210.0180.00816.69
7.2.200.0180.00616.83
7.2.190.0140.00816.87
7.2.180.0140.00716.92
7.2.170.0170.00516.92
7.2.160.0170.00416.96
7.2.150.0160.00618.22
7.2.140.0180.00418.26
7.2.130.0150.00718.48
7.2.120.0160.00518.26
7.2.110.0160.00518.24
7.2.100.0310.00418.27
7.2.90.0140.00718.26
7.2.80.0170.00518.28
7.2.70.0180.00518.23
7.2.60.0190.00418.17
7.2.50.0150.00718.23
7.2.40.0160.00618.36
7.2.30.0180.00518.35
7.2.20.0170.00518.33
7.2.10.0150.00718.25
7.2.00.0180.00518.27

preferences:
30.81 ms | 403 KiB | 5 Q