Online PHP editor | rfc for Ye8ec

@ 2017-07-02T17:46:17Z

<?php
// all keys must be lowercase
$keywords_external_path = array(
  "sweet potato" => "food/sweet-potato", 
  "potato salads" => "food/potato-salads",
  "potato" => "food/potato", 
);

$data = array(
  'post_content' => 'Sweet potato some text then potato then more text and then potato salads'
);


$base = 'http://domain.com/'; // only if this is useful

$keywords_external = array_keys($keywords_external_path);
krsort($keywords_external);

// to quickly discards useless position (if you have many keywords): you can also do the same with the second letter
$keywords_first_letter = implode('', array_unique(array_reduce($keywords_external, function ($c, $i) { $c[]=$i[0]; return $c; }, [])));

$pattern = '~\b(?=['. $keywords_first_letter . '])(?:' . implode('|', $keywords_external) . ')\b~i';

$result = preg_replace_callback($pattern, function ($m) use ($keywords_external_path, $base) {
    return '<a href="' . $base . $keywords_external_path . '">' . $m[0] . '</a>'; 
}, $data['post_content']);

echo $result;

Output for git.master, git.master_jit, rfc.property-hooks: Warning: Array to string conversion in /in/Ye8ec on line 25 Warning: Array to string conversion in /in/Ye8ec on line 25 Warning: Array to string conversion in /in/Ye8ec on line 25 <a href="http://domain.com/Array">Sweet potato</a> some text then <a href="http://domain.com/Array">potato</a> then more text and then <a href="http://domain.com/Array">potato</a> salads

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2020-03-21 RFC: Is_Literal - declined
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