<?php
function regexp($string, $pattern)
{
return preg_match('/'.$pattern.'/', $string);
}
function getLeftDelimiter($string, $pattern)
{
$result = '';
while(1)
{
$current = $string;
$position = strlen($string);
while($position && regexp($current, $pattern))
{
$position--;
$current = substr($current, 0, -1);
}
$current = substr($string, 0, $position+1);
if(regexp($current, '^('.$pattern.')$'))
{
$result .= $current;
$string = substr($string, $position+1);
}
else
{
return $result;
}
}
}
function getRightDelimiter($string, $pattern)
{
$result = '';
while(1)
{
$current = $string;
$position = 0;
while($position<strlen($string) && regexp($current, $pattern))
{
$position++;
$current = substr($current, 1);
}
$current = substr($string, $position-1);
if(regexp($current, '^('.$pattern.')$'))
{
$result = $current.$result;
$string = substr($string, 0, $position-1);
}
else
{
return $result;
}
}
}
function getLeftChunk($string, $pattern)
{
$result = '';
$current = '';
$position= 0;
while($position<strlen($string) && !regexp($current, $pattern))
{
$position++;
$current = substr($string, 0, $position);
}
$delimiter = getRightDelimiter($current, $pattern);
return substr($current, 0, strlen($current)-strlen($delimiter));
}
function regexpSplit($string, $pattern)
{
$result = [];
$i = 0;
while($string && ++$i<10)
{
$delimiter = getLeftDelimiter($string, $pattern);
if($delimiter==$string)
{
break;
}
$string = substr($string, strlen($delimiter));
$chunk = getLeftChunk($string, $pattern);
$string = substr($string, strlen($chunk));
$result[] = $chunk;
}
return $result;
}
$string = 'tbarbarfob12baz 56bar';
$pattern = 'bar|baz';
var_dump(regexpSplit($string, $pattern));
preferences:
41.57 ms | 402 KiB | 5 Q