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<?php $s='Ceam mai frecventa litera este , frecventa fiind de'; $a= explode('',$s); var_dump($a); var_dump(sort(array_unique($a)));
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: explode(): Argument #1 ($separator) cannot be empty in /in/Wr7Uu:4 Stack trace: #0 /in/Wr7Uu(4): explode('', 'Ceam mai frecve...') #1 {main} thrown in /in/Wr7Uu on line 4
Process exited with code 255.
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Fatal error: Uncaught ValueError: explode(): Argument #1 ($separator) cannot be empty in /in/Wr7Uu:4 Stack trace: #0 /in/Wr7Uu(4): explode('', 'Ceam mai frecve...') #1 {main} thrown in /in/Wr7Uu on line 4
Process exited with code 255.
Output for 7.3.16 - 7.3.31, 7.4.0 - 7.4.25, 7.4.27 - 7.4.33
Warning: explode(): Empty delimiter in /in/Wr7Uu on line 4 bool(false) Warning: array_unique() expects parameter 1 to be array, bool given in /in/Wr7Uu on line 6 Notice: Only variables should be passed by reference in /in/Wr7Uu on line 6 Warning: sort() expects parameter 1 to be array, null given in /in/Wr7Uu on line 6 bool(false)
Output for 7.3.32 - 7.3.33, 7.4.26
Warning: explode(): Empty delimiter in /in/Wr7Uu on line 4 bool(false) Warning: array_unique() expects parameter 1 to be array, bool given in /in/Wr7Uu on line 6 Warning: sort() expects parameter 1 to be array, null given in /in/Wr7Uu on line 6 bool(false)
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33
Warning: explode(): Empty delimiter in /in/Wr7Uu on line 4 bool(false) Warning: array_unique() expects parameter 1 to be array, boolean given in /in/Wr7Uu on line 6 Notice: Only variables should be passed by reference in /in/Wr7Uu on line 6 Warning: sort() expects parameter 1 to be array, null given in /in/Wr7Uu on line 6 bool(false)

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