3v4l.org

run code in 300+ PHP versions simultaneously
<?php $writer = new XMLWriter(); $writer->openMemory(); $writer->startElement("tag-(with)-brackets"); $writer->endElement(); $writer->outputMemory();
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
Fatal error: Uncaught ValueError: XMLWriter::startElement(): Argument #2 must be a valid element name, "tag-(with)-brackets" given in /in/dgHCD:5 Stack trace: #0 /in/dgHCD(5): XMLWriter->startElement('tag-(with)-brac...') #1 {main} thrown in /in/dgHCD on line 5
Process exited with code 255.
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Fatal error: Uncaught ValueError: XMLWriter::startElement(): Argument #2 must be a valid element name, "tag-(with)-brackets" given in /in/dgHCD:5 Stack trace: #0 /in/dgHCD(5): XMLWriter->startElement('tag-(with)-brac...') #1 {main} thrown in /in/dgHCD on line 5
Process exited with code 255.
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: XMLWriter::startElement(): Invalid Element Name in /in/dgHCD on line 5

preferences:
238.58 ms | 402 KiB | 291 Q