how to convert string to array character - php

Question

The first line of code is converted to the second code. I can use the padding methods, but I want to get the solution from the shortest path and convert it quickly. I will use the code field in the sql select section
$it = "(a(am,bam),b(dam,cam))";
$to = "a.am, a.bam, b.dam, b.cam";

Answer 1

Try following code:
$it = "(a(am,bam),b(dam,cam))";
function iDelimiter( $str ) {
$count = 0;
$str = str_split( $str );
foreach( $str as &$value ) {
if( $value == "(" ) {
$count++;
} elseif( $value == ")" ) {
$count--;
}
if( $value == "," && ! $count ) {
$value = "|";
}
}
return explode( "|", implode( $str ) );
}
function iParser( $str, $_prefix = "" ) {
preg_match( "/^((?!(\(|\))).)*\((.*)\)$/", $str, $m );
if( count( $m ) < 4 ) {
return ( strlen( $_prefix ) ? $_prefix . "." : '' ) . $str;
}
$prefix = ( strlen( $_prefix ) ? $_prefix . "." : '' ) . $m[1];
$str = $m[3];
if( strpos( $str, "(" ) === false ) {
$return = explode( ",", $str );
$pad = preg_filter( '/^/', strlen( $prefix ) ? $prefix . '.' : '', $return );
return implode( $pad, "," );
} else {
$str = iDelimiter( $str );
$return = array_map( 'iParser', $str, array_pad( array(), count( $str ), $prefix ) );
return implode( $return, ", " );
}
}
print_r( iParser( $it ) );
It parse every depth of parentheses. Just pass your string to iParser function.

Answer 2

Try this:
<?php
function str2Arr( $s, $r, $str) {
$str = trim( str_replace( $s, $r, $str ));
return explode(" ", $str);
}
$it = "(a(am,bam),b(dam,cam))";
//$to = "a.am, a.bam, b.dam, b.cam";
$search = ['),', '(', ')', ',', 'a a', 'b d', 'ba', 'c'];
$replace =[' ', ' ', ' ', ' ', 'a.a','b.d', 'a.ba', 'b.c'];
var_dump( implode(", ",( str2Arr( $search, $replace, $it) ) ) );
See demo
Without using a regex one may achieve the specified conversion by using str_replace() which uses an array of characters to be replaced by another array of characters when found in the subject string. The non-alphabetical characters are each replaced with blank space and the substrings are replaced so that each starts with an "a" or "b" as appropriate followed by a period and the rest of the substring.

Answer 3

Kill me now. There's got to be a better way, but my eyes are bleeding.
It probably would have worked much better had I started with a regex, but my regex skills are rusty.
I kept pounding your data with a hammer until the square peg went through the round hole.
<?php
$it = "(a(am,bam),b(dam,cam))";
$it = substr($it, 1, -1);
//$to = "a.am, a.bam, b.dam, b.cam";
$final = [];
$test = explode("),", $it);
foreach($test as $section) {
$letter = substr($section, 0, 1);
$remainder = substr($section, 2);
if(strpos($remainder, ")")) {
$remainder = substr($remainder, 0, strpos($remainder, ")"));
}
echo $letter . " ".$remainder."\n";
foreach(explode(",", $remainder) as $fragment) {
array_push($final, $letter.".".$fragment);
}
}
var_dump($final);
var_dump(implode($final, ", "));
Yields
a am,bam
b dam,cam
array(4) {
[0]=>
string(4) "a.am"
[1]=>
string(5) "a.bam"
[2]=>
string(5) "b.dam"
[3]=>
string(5) "b.cam"
}
string(22) "a.am, a.bam, b.dam, b.cam"