Online PHP editor | output for O1kBl

@ 2018-03-14T18:54:57Z

<?php
function getReplacedStr($str, $searchStr, $replaceWith){
    $arr = explode(' ', $str);
$firstElement = array_shift($arr);
if($searchStr == $firstElement){
    $finalStr =  $replaceWith.' '.implode(' ', $arr);
}else{
    $finalStr = $str;
}
return $finalStr;
}
$replaceWith = 'Hi';
$searchStr = 'Hello';
$str = 'Hello World Hello World';
$str2 = 'Super World Hello World';

echo getReplacedStr($str, $searchStr, $replaceWith);
echo "\n";
echo getReplacedStr($str2, $searchStr, $replaceWith);

Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 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: Hi World Hello World Super World Hello World
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 Hi World Hello World Super World Hello World

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