Description:
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function ereg_replace seems to add the replacement string at the end of the string when the replacement is a special character (utf-8 code) and the pattern is \'.

using mb_ereg_replace the problem is solved, but ereg_replace works wrong

Reproduce code:
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echo ereg_replace("\'","‘","hola");


Expected result:
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I expect this as a result:

hola


because there isn't a ‘ in text hola

Actual result:
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it actually outputs:

hola‘