Online PHP editor | output for EaN9Z

@ 2021-06-12T18:24:42Z

<?php

function make_literal($s) {
	$chars = [0x09 => "\t","\n",".","\f","\r", 0x20 => " ","!","\"","#","\$","%","&","'","(",")","*","+",",","-",".","/","0","1","2","3","4","5","6","7","8","9",":",";","<","=",">","?","@","A","B","C","D","E","F","G","H","I","J","K","L","M","N","O","P","Q","R","S","T","U","V","W","X","Y","Z","[","\\","]","^","_","`","a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z","{","|","}","~"];
	return implode("", array_map(fn($c) => $chars[ord($c)], str_split($s, 1)));
}
function test($s) {
	echo "is_literal = ", (is_literal($s) ? "true" : "false"), " for: $s\n";
}
$a = "test";
test($a);
test(strtoupper($a));
test(make_literal(strtoupper($a)));
test(make_literal(json_encode($_SERVER)));

Output for 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6: is_literal = Fatal error: Uncaught Error: Call to undefined function is_literal() in /in/EaN9Z:8 Stack trace: #0 /in/EaN9Z(11): test('test') #1 {main} thrown in /in/EaN9Z on line 8
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 is_literal = Fatal error: Uncaught Error: Call to undefined function is_literal() in /in/EaN9Z:8 Stack trace: #0 /in/EaN9Z(11): test('test') #1 {main} thrown in /in/EaN9Z on line 8
Process exited with code 255.
Output for 7.3.0 - 7.3.33: Parse error: syntax error, unexpected '=>' (T_DOUBLE_ARROW), expecting ')' in /in/EaN9Z on line 5
Process exited with code 255.

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