Question

For the strings like:

""abc"""

It should be:

"abc"

But my attempt is failing by using:

preg_replace('/[\"]+/','"',$input);

Answer 1

This seems to work…

$input = '""abs"""';
//$input = '""abs""';
//$input = '"abs"""';
//$input = '""abs""';
$input = preg_replace('/"+/','"',$input);

echo $input;

Short explanation of the regular expression –

• " – this is the character we are looking for.
• + – the plus sign indicates that we are looking for one or more of the previously mentioned characters…

_{My answer builds on a previous answer by @joey that has since been removed…}

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References –

• preg_replace
• regular expressions