What are some potential causes for extra spaces being inserted in BBCode replacements in PHP?

Extra spaces being inserted in BBCode replacements in PHP can be caused by unintended spaces in the original BBCode tags or in the replacement strings. To solve this issue, you can use the trim() function to remove any leading or trailing spaces from the BBCode tags and replacement strings before performing the replacements. 

$bbcode = "[b]Hello[/b]";
$bbcode = trim($bbcode);

$replacements = [
    "[b]" => "<strong>",
    "[/b]" => "</strong>"
];

foreach ($replacements as $search => $replace) {
    $bbcode = str_replace(trim($search), trim($replace), $bbcode);
}

echo $bbcode;

Keywords

BBCode PHP extra spaces replacements causes

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