Online PHP editor | output for alaWY

@ 2021-08-11T10:47:39Z

<?php
$str1 = "— lorem lorem Alice lorem lorem lorem loremlorem";
//       | < Why would a dash make a difference in the the found index?
$str2 = "a lorem lorem Alice lorem lorem lorem loremlorem";
$str3 = "  lorem lorem Alice lorem lorem lorem loremlorem";


// The found index is always the same
$foundIndex = mb_stripos($str1, "Alice"); 
var_dump(substr($str1, $foundIndex - 6, 24), $foundIndex);

$foundIndex = mb_stripos($str2, "Alice");
var_dump(substr($str2, $foundIndex - 6, 24), $foundIndex);

$foundIndex = mb_stripos($str3, "Alice");
var_dump(substr($str3, $foundIndex - 6, 24), $foundIndex);

Output for 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: string(24) "m lorem Alice lorem lore" int(14) string(24) "lorem Alice lorem lorem " int(14) string(24) "lorem Alice lorem lorem " int(14)
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 string(24) "m lorem Alice lorem lore" int(14) string(24) "lorem Alice lorem lorem " int(14) string(24) "lorem Alice lorem lorem " int(14)

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