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run code in 300+ PHP versions simultaneously
<?php $a = new stdClass(); $a->foo = new stdClass(); $a->bar = $a; $a->baz = function(){return 1;}; $res = print_r($a, true); echo $res, "\n"; echo str_replace(["\r\n", "\r", "\n"], ["\n", "", '\n'], $res), "\n"; echo preg_replace('/\s+/', ' ', $res), "\n"; echo strlen($res), "\n"; echo strlen(base64_encode($res)), "\n";
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 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
stdClass Object ( [foo] => stdClass Object ( ) [bar] => stdClass Object *RECURSION* [baz] => Closure Object ( ) ) stdClass Object\n(\n [foo] => stdClass Object\n (\n )\n\n [bar] => stdClass Object\n *RECURSION*\n [baz] => Closure Object\n (\n )\n\n)\n stdClass Object ( [foo] => stdClass Object ( ) [bar] => stdClass Object *RECURSION* [baz] => Closure Object ( ) ) 161 216
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 stdClass Object ( [foo] => stdClass Object ( ) [bar] => stdClass Object *RECURSION* [baz] => Closure Object ( ) ) stdClass Object\n(\n [foo] => stdClass Object\n (\n )\n\n [bar] => stdClass Object\n *RECURSION*\n [baz] => Closure Object\n (\n )\n\n)\n stdClass Object ( [foo] => stdClass Object ( ) [bar] => stdClass Object *RECURSION* [baz] => Closure Object ( ) ) 161 216

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