<?php
 
error_reporting(-1);
 
$text = "оишщеок екщ жи укгрпжып а зделал то,то:павш!Папвпв";
 
$regexp = array('/([,;!?:])(\\S)/ui', '/(ж|ш)ы/ui', '/координально/ui', '/сдесь/ui', '/з(делал|делаю|делан)/ui', '/(\\S) (а|но) /');
$replacement = array('$1 $2', '$1и', 'кардинально', 'здесь', 'с$1', '$1, $2 ');
 
$text = preg_replace($regexp, $replacement, $text);
 
echo $text;

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