如何在PHP中替换完整的单词？ [重复]

Question

Possible Duplicate:
PHP string replace match whole word

What I want to do is to replace Tomato with Apple for example. The Probleim I'm running in is:

when the string contains "Tomatos" (mention the s) it will replace Tomato and leafe me with a string "Apples" (again mention the s).

Because "Tomato" != "Tomatos" (...s) it shall NOT replace.

Which PHP funktion is good for this task? I tried the str_replace function but it seems like it isn't possible to archive my task with it.

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€

The words are seperated with ",".

Answer 1

preg_replace. You can search for a regular expression, like \bTomato\b, which means whole word Tomato.