Php 具有多文本值的搜索数组

在这个数组中，我想从值中找到单词“in”，并从该歌曲中创建新数组，包括专辑中的数字（键）歌曲

$londonCalling = array(
'song-01' => 'London Calling',
'song-02' => 'Brand New Cadillac',
'song-03' => 'Jimmy Jazz',
'song-04' => 'Hateful',
'song-05' => 'Rudie Cant Fail',
'song-06' => 'Spanish Bombs',
'song-07' => 'The Right Profile',
'song-08' => 'Lost in the Supermarket',
'song-09' => 'Clampdown',
'song-10' => 'The Guns of Brixton',
'song-11' => 'Wrong Em Boyo',
'song-12' => 'Death or Glory',
'song-13' => 'Koka Kola',
'song-14' => 'The Card Cheat',
'song-15' => 'Lovers Rock',
'song-16' => 'Four Horsemen',
'song-17' => 'Im Not Down',
'song-18' => 'Revolution Rock',
'song-19' => 'Train in Vain');

这可以通过oneliner完成：

print_r(preg_grep('/in/', $londonCalling));

---

交替阵列滤波器

$res = array_filter($londonCalling , function($e){
    return strpos($e, 'in') !== false;
});

print_r([$res]);

---

尝试简单的foreach loop PHP教程在以下情况下非常有用

preg\u grep

是正确的选择。查找“单词”将是

/\bin\b/

（单词边界）