09-16-2001
A "poor man's" method could be to use
two file descriptors (1 read fd and 1 write fd)
on the file and then use
getc() and examine the value of the character
returned (and subsequent character values) to
match the string in question. Once you've found
it, you can then "seek()" to the start of the
pattern and write the new pattern assuming you
are writing the same number of bytes to replace
the old pattern. If not, then you will have to
write to a new file (maybe a tmp file) and be
sure to write out all non matching data to the
new file. You can then replace the old file
with the new one ( see: unlink(), link() ).
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LEARN ABOUT PHP
mb_eregi_replace
MB_EREGI_REPLACE(3) 1 MB_EREGI_REPLACE(3)
mb_eregi_replace - Replace regular expression with multibyte support ignoring case
SYNOPSIS
string mb_eregi_replace (string $pattern, string $replace, string $string, [string $option = "msri"])
DESCRIPTION
Scans $string for matches to $pattern, then replaces the matched text with $replacement.
PARAMETERS
o $pattern
- The regular expression pattern. Multibyte characters may be used. The case will be ignored.
o $replace
- The replacement text.
o $string
- The searched string.
o $option
-$option has the same meaning as in mb_ereg_replace(3).
RETURN VALUES
The resultant string or FALSE on error.
NOTES
Note
The internal encoding or the character encoding specified by mb_regex_encoding(3) will be used as the character encoding for this
function.
Warning
Never use the e modifier when working on untrusted input. No automatic escaping will happen (as known from preg_replace(3)). Not
taking care of this will most likely create remote code execution vulnerabilities in your application.
SEE ALSO
mb_regex_encoding(3), mb_ereg_replace(3).
PHP Documentation Group MB_EREGI_REPLACE(3)