Online PHP editor | perf for PGDSl

<?php /** * Dom\XMLDocument::C14N() drops namespace declarations on DOM-built documents * * When a Dom\XMLDocument is built via the DOM API (createElementNS, appendChild), * non-exclusive C14N() strips all namespace declarations while keeping prefixed * element names, producing invalid XML that cannot be re-parsed. * * This does NOT happen when: * - The document is parsed from a string (createFromString) * - Using legacy DOMDocument (DOM-built or parsed) * - Using exclusive C14N (C14N(exclusive: true)) * * Related: https://github.com/php/php-src/issues/20444 * Possibly related fix: https://github.com/php/php-src/commit/40c291cf932c31a302fa584bb50b6edb199fb07e * (but still broken on PHP 8.4.19) */ echo "PHP " . PHP_VERSION . PHP_EOL . PHP_EOL; // 1. DOM-built document: C14N drops namespace declarations $doc = Dom\XMLDocument::createEmpty(); $root = $doc->createElementNS("urn:envelope", "env:Root"); $doc->appendChild($root); $child = $doc->createElementNS("urn:child", "x:Child"); $root->appendChild($child); echo "DOM-built Dom\XMLDocument" . PHP_EOL; echo " saveXML: " . trim($doc->saveXML()) . PHP_EOL; echo " C14N: " . $doc->C14N() . PHP_EOL; // Expected: <env:Root xmlns:env="urn:envelope"><x:Child xmlns:x="urn:child"></x:Child></env:Root> // Actual: <env:Root><x:Child></x:Child></env:Root> // ^ namespace declarations are missing, this is not valid XML echo PHP_EOL; // 2. Same structure parsed from string: C14N works correctly $doc2 = Dom\XMLDocument::createFromString( '<env:Root xmlns:env="urn:envelope"><x:Child xmlns:x="urn:child"/></env:Root>' ); echo "Parsed Dom\XMLDocument" . PHP_EOL; echo " C14N: " . $doc2->C14N() . PHP_EOL; // Correct: <env:Root xmlns:env="urn:envelope"><x:Child xmlns:x="urn:child"></x:Child></env:Root> echo PHP_EOL; // 3. Legacy DOMDocument DOM-built: C14N works correctly $doc3 = new DOMDocument(); $root3 = $doc3->createElementNS("urn:envelope", "env:Root"); $doc3->appendChild($root3); $child3 = $doc3->createElementNS("urn:child", "x:Child"); $root3->appendChild($child3); echo "DOM-built DOMDocument (legacy)" . PHP_EOL; echo " C14N: " . $doc3->C14N() . PHP_EOL; // Correct: <env:Root xmlns:env="urn:envelope"><x:Child xmlns:x="urn:child"></x:Child></env:Root> echo PHP_EOL; // 4. Exclusive C14N on DOM-built document: works correctly echo "DOM-built Dom\XMLDocument (exclusive C14N)" . PHP_EOL; echo " C14N: " . $doc->C14N(exclusive: true) . PHP_EOL; // Correct: <env:Root xmlns:env="urn:envelope"><x:Child xmlns:x="urn:child"></x:Child></env:Root>

Version	System time (s)	User time (s)	Memory (MiB)
8.5.3	0.019	0.009	17.35
8.5.2	0.037	0.011	17.02
8.5.1	0.032	0.008	17.08
8.5.0	0.031	0.009	16.46
8.4.18	0.028	0.009	19.77
8.4.17	0.033	0.008	19.87
8.4.16	0.027	0.008	19.87
8.4.15	0.029	0.007	19.83
8.4.14	0.037	0.007	18.01
8.4.13	0.033	0.010	17.99
8.4.12	0.031	0.012	17.95
8.4.11	0.034	0.005	18.25
8.4.10	0.030	0.012	18.05
8.4.9	0.036	0.008	17.95
8.4.8	0.032	0.005	18.25
8.4.7	0.015	0.005	18.25
8.4.6	0.022	0.007	18.09
8.4.5	0.031	0.014	18.13
8.4.4	0.040	0.009	17.82
8.4.3	0.043	0.006	17.79
8.4.2	0.020	0.003	17.99
8.4.1	0.023	0.006	17.79
8.3.30	0.017	0.004	18.12
8.3.29	0.036	0.012	18.29
8.3.28	0.026	0.007	18.36
8.3.27	0.027	0.011	16.58
8.3.26	0.034	0.010	16.79
8.3.25	0.036	0.007	16.63
8.3.24	0.040	0.006	16.42
8.3.23	0.040	0.008	16.52
8.3.22	0.032	0.009	16.54
8.3.21	0.026	0.005	16.56
8.3.20	0.031	0.004	16.68
8.3.19	0.018	0.003	16.64
8.3.18	0.015	0.004	16.72
8.3.17	0.016	0.004	16.66
8.3.16	0.024	0.006	16.66
8.3.15	0.028	0.006	16.50
8.3.14	0.020	0.003	16.73
8.3.13	0.016	0.005	16.66
8.3.12	0.014	0.004	16.85
8.3.11	0.019	0.007	16.56
8.3.10	0.022	0.002	16.45
8.3.9	0.036	0.008	16.66
8.3.8	0.016	0.005	16.45
8.3.7	0.018	0.003	16.66
8.3.6	0.017	0.005	16.62
8.3.5	0.018	0.004	16.83
8.3.4	0.011	0.008	18.02
8.3.3	0.013	0.002	18.01
8.3.2	0.014	0.002	18.04
8.3.1	0.027	0.009	17.97
8.3.0	0.027	0.008	17.76