php - preg_repalce matched partial data with correct regex -

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$str = b c; $str = preg_replace("/a|b|c\","" $str);

above regex matched a, b , c excluded. @ first thought caused gobal thing, after researched preg_match has default global enabled. has gone wrong?

you'll need quotes around string:

$str = "a b c";

...a comma between replacement text , source, , flip closing regex slash match opening one:

$str = preg_replace("/a|b|c/", "", $str);

that leave $str set [space][space]

UIO