Need Help - Regex - PHPBuilder Forums

Need Help - Regex

vickofpak

I want someone to help me please. I am very new to Regular Expressions. Here is the case:

$search_string = "Love";

Pattern Required for: $search_string.rm

Means it will search for the songs containing search string with .rm extension. I could found the following regex but it brings out all .rm files.

.*.rm$

Any help will be deeply appriciated

Thanks

sneakyimp

Getting the correct regex pattern depends both on your source material and on what you are looking for. What kind of text are you searching? html? CSV files? What are you searching for? Songs with 'love' in the title and a suffix of '.rm' ?

vickofpak

Its required for a folder based search script. I already the following script running well for me:

<?php

clearstatcache();

$sourcepath = "songs";

// Replace \ by / and remove the final / if any
$root = ereg_replace( "/$", "", ereg_replace( "[\]", "/", $sourcepath ));

// Search for text files
$results = m_find_in_dir( $root, ".*.rm$" );
if( false === $results ) {
echo "'{$sourcepath}' is not a valid directory\n";
} else {
echo "<pre>";
print_r( $results );
}

/**
Search for a file maching a regular expression

@ string $root Root path
@ string $pattern POSIX regular expression pattern
@ boolean $recursive Set to true to walk the subdirectories recursively
@ boolean $case_sensitive Set to true for case sensitive search
@return array An array of string representing the path of the matching files, or false in case of error
/
function m_find_in_dir( $root, $pattern, $recursive = true, $case_sensitive = false ) {
$result = array();
if( $case_sensitive ) {
if( false === m_find_in_dir( $root, $pattern, $recursive, $result )) {
return false;
}
} else {
if( false === m_find_in_dir_i( $root, $pattern, $recursive, $result )) {
return false;
}
}

return $result;

}

/**
@access private
/
function m_find_in_dir( $root, $pattern, $recursive, &$result ) {
$dh = @opendir( $root );
if( false === $dh ) {
return false;
}
while( $file = readdir( $dh )) {
if( "." == $file || ".." == $file ){
continue;
}
if( false !== @ereg( $pattern, "{$root}/{$file}" )) {
$result[] = "{$root}/{$file}";
}
if( false !== $recursive && is_dir( "{$root}/{$file}" )) {
m_find_in_dir( "{$root}/{$file}", $pattern, $recursive, $result );
}
}
closedir( $dh );
return true;
}

/**
@access private
/
function m_find_in_dir_i( $root, $pattern, $recursive, &$result ) {
$dh = @opendir( $root );
if( false === $dh ) {
return false;
}
while( $file = readdir( $dh )) {
if( "." == $file || ".." == $file ){
continue;
}
if( false !== @eregi( $pattern, "{$root}/{$file}" )) {
$result[] = "{$root}/{$file}";
}
if( false !== $recursive && is_dir( "{$root}/{$file}" )) {
m_find_in_dir( "{$root}/{$file}", $pattern, $recursive, $result );
}
}
closedir( $dh );
return true;
}

The problem is with pattern part. Yes i am looking for match in the name part of the song file. That is before .rm extension.

NogDog

I'd suggest something like the following, using the preg_ functions in preference to ereg:

if(preg_match('/'.preg_quote($search).'.*\.rm/i', $file))
{
   // it's a match
}

vickofpak

Very nice Nog 🙂
Seems working...thanks a lot...here is the modified script for any other's guidance:

<?php
$search = "Love";
clearstatcache();

$sourcepath = "songs";

// Replace \ by / and remove the final / if any
$root = ereg_replace( "/$", "", ereg_replace( "[\]", "/", $sourcepath ));

// Search for text files
$results = m_find_in_dir( $root, '/'.preg_quote($search).'.*.rm/i' );
if( false === $results ) {
echo "'{$sourcepath}' is not a valid directory\n";
} else {
echo "<pre>";
print_r( $results );
}

return $result;

}

/**
@access private
/
function m_find_in_dir( $root, $pattern, $recursive, &$result ) {
$dh = @opendir( $root );
if( false === $dh ) {
return false;
}
while( $file = readdir( $dh )) {
if( "." == $file || ".." == $file ){
continue;
}
if(preg_match($pattern, "{$root}/{$file}" )) {
$result[] = "{$root}/{$file}";
}
if( false !== $recursive && is_dir( "{$root}/{$file}" )) {
m_find_in_dir( "{$root}/{$file}", $pattern, $recursive, $result );
}
}
closedir( $dh );
return true;
}

/**
@access private
/
function m_find_in_dir_i( $root, $pattern, $recursive, &$result ) {
$dh = @opendir( $root );
if( false === $dh ) {
return false;
}
while( $file = readdir( $dh )) {
if( "." == $file || ".." == $file ){
continue;
}
if(preg_match($pattern, "{$root}/{$file}" )) {
$result[] = "{$root}/{$file}";
}
if( false !== $recursive && is_dir( "{$root}/{$file}" )) {
m_find_in_dir( "{$root}/{$file}", $pattern, $recursive, $result );
}
}
closedir( $dh );
return true;
}