<?php $json = '{"test" : "test one \xe0, \x270B"}'; echo var_export(json_validate($json), true); $json = preg_replace_callback( pattern: '/\\\\x([[:xdigit:]]+)/', callback: fn($m) => sprintf('\u%04s', $m[1]), subject: $json, count: $count ); echo "\n$count"; echo "\n" . var_export(json_validate($json), true); echo "\n$json\n"; var_export(json_decode($json));
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