Replace characters

I have a lot of strings of special characters. I want to replace all special characters with chara开发者_StackOverflow社区cter "-" The characters do not need to be replaced as "-" are "A-Za-z0-9"

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try this :

preg_replace("/[^A-Za-z0-9-]/", "-", $yourString);

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Resources :

• php.net - preg_replace()

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Pretty straight forward.

$text = preg_replace('~[^0-9a-z]~i', '-', $text);

Extra Information

See Regular-Expressions.info for further information.

The ^ inside the Character Class [] at the start basically says, "Match any character except the ones following it".