PHP Function Reference
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PHP Function eregi_replace()
string eregi_replace (string pattern, string replacement, string originalstring);
Definition and Usage
The eregi_replace() function operates exactly like ereg_replace(), except that the
search for pattern in string is not case sensitive.
After the replacement has occurred, the modified string will be returned.
If no matches are found, the string will remain unchanged.
Following is the piece of code, copy and paste this code into a file and verify the result.
$copy_date = "Copyright 2000";
$copy_date = eregi_replace("([a-z]+)", "&Copy;", $copy_date);
This will produce following result