<?php
 
error_reporting(-1);
 
$text = <<<EOF
размещение государственного заказа на право заключение государственного контракта на выпoлнение pабoт по комплекснoму благоустрoйству двoрoвой территoрии по адресу: ул.Гурьянoва д.2 к.2
EOF
;
 
$regexp = '/([а-яё]*)(o|p|e|a|x)([а-яё]*)/ui';
 
$text = preg_replace($regexp, '$1[$2]$3', $text);
 
$regexp = '/[^ .]*\\[(o|p|e|a|x)\\][^ .]*/ui';
 
$matches = array();
$result = preg_match_all($regexp, $text, $matches);
 
$regexp = '/([а-яё]*)(o|p|e|a|x)([а-яё]*)/ui';
$patterns = array();
$patterns[0] = '/\\[o\\]/ui';
$patterns[1] = '/\\[p\\]/ui';
$patterns[2] = '/\\[e\\]/ui';
$patterns[3] = '/\\[a\\]/ui';
$patterns[4] = '/\\[x\\]/ui';
 
$replacements = array();
$replacements[0] = 'о';
$replacements[1] = 'р';
$replacements[2] = 'е';
$replacements[3] = 'а';
$replacements[4] = 'х';
 
foreach ($matches[0] as $match){
    echo "Найдена опечатка в тексте:{$match}\n";
    $text = preg_replace($patterns, $replacements, $text);
}
 
 
echo $text;

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