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    <p>You don't need to use regular expressions. </p> <p>use <code>str_replace()</code> as you need to replace the <code>','</code> for a <code>'.'</code>, and then use <code>intval()</code> or <code>floatval()</code> functions to get the numeric value. You can also use <code>strstr()</code> to look for the <code>'.'</code> and decide if using <code>intval()</code> or <code>floatval()</code></p> <p>Example:</p> <pre><code>$row = array('Unspecified risk', 'Yes', '8', '3', '2', '13', 'none', '-1,49', '-2,51', '-1,46', '-1,54'); function toNumber($target){ $switched = str_replace(',', '.', $target); if(is_numeric($target)){ return intval($target); }elseif(is_numeric($switched)){ return floatval($switched); } else { return $target; } } $row = array_map('toNumber', $row); var_dump($row); </code></pre> <p>We use str_replace() to replace the dot for the comma, this way it's a international notation float, even if it's on string, this way later on we can check if it's numeric with <code>is_numeric()</code> &lt;-- this function is awesome as it detects from a string if it's a number or not, no matter integer or float etc.</p> <p>We use the is_numeric to check if the value is integer float or text and return the corresponding value using <code>intval()</code> or <code>floatval()</code> (the value without the replace applied will not return as a valid numeric, only after switching the , and . it will return true as numeric).</p> <p>We use <code>$row = array_map('toNumber', $row);</code> to apply the changes to the array.</p> <p>Profit xD</p>
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    1. POPHP: If number (with comma), convert it to right number format (with point)
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    1. COThanks for answering. But how do I distinguish between text values and number values?
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    2. COwith is_numeric(), check my edit :D
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    3. COVery elegant solution! Thank you for your efforts: it works like a charm.
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