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POPHP preg_replace multiple rules
 

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    <p>I'm just wondering how to apply several rules for a preg_replace without executing them in the first run. Its a bit complicated let me explain based on an example.</p> <p><strong>Input:</strong></p> <pre><code>$string = 'The quick brown fox jumps over the lazy freaky dog'; </code></pre> <p><strong>Rules:</strong> </p> <ul> <li>Replace <strong>a</strong>, <strong>i</strong>, <strong>o</strong> with <strong>u</strong> (if not at the beginning of a word &amp; if not before/after a vowel)</li> <li>Replace <strong>e</strong>, <strong>u</strong> with <strong>i</strong> (if not at the beginning of a word &amp; if not before/after a vowel)</li> <li>Replace <strong>ea</strong> with <strong>i</strong> (if not at beginning of a word)</li> <li>Replace whole words ie <strong>dog</strong> with <strong>cat</strong> and <strong>fox</strong> with <strong>wolf</strong> (without applying the rules above)</li> </ul> <p><strong>Output:</strong> Thi quick bruwn wolf jimps over thi luzy friky cat</p> <p><br><br><br> I started with something like that: (<em>Edited thanks to Ezequiel Muns</em>)</p> <pre><code>$patterns = array(); $replacements = array(); $patterns[] = "/(?&amp;lt;!\b|[aeiou])[aio](?![aeiou])/"; $replacements[] = "u"; $patterns[] = "/(?&amp;lt;!\b|[aeiou])[eu](?![aeiou])/"; $replacements[] = "i"; $patterns[] = '/ea/'; $replacements[1] = 'i'; $patterns[] = '/dog/'; $replacements[0] = 'cat'; echo preg_replace($patterns, $replacements, $string); </code></pre> <p><strong>Output:</strong> </p> <pre><code>Thi qiick briwn fix jimps ivir thi lizy friiky dig </code></pre> <p><br></p> <hr> <p><em>Edited:</em></p> <p>As you can see the problem is that <strong>every rule gets overwritten by the previous rule</strong>.</p> <p>Example '<strong>fox</strong>':</p> <ol> <li>rule: turns <strong>fox</strong> into <strong>fux</strong></li> <li>rule: turns <strong>fux</strong> into <strong>fix</strong></li> </ol> <p>Is there a way to avoid the following rule(s) if the character was already been effected by the previous rule?</p> <p>Does this makes sense?</p>
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    1. COWhere did `freaky` come from? Pfft. I want a regex to make it the proper phrase :P
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