grep with -f like in PHP

Question

在PHP中是否有这样的函数在unix/linux系统中执行grep -f filename.如果没有,那么PHP函数/工具将有助于为此创建自定义方法/函数.谢谢!

Answer 1

实际上恕我直言,我会说它是以下:

$result = preg_grep($pattern, file($path));

如果您需要做的(递归)在一组文件,也有glob和foreach或(Recursive)DirectoryIterator或 ^文件而不是忘记了 ^文件.GlobIteratorRegexIterator

例如用SplFileObject和RegexIterator:

$stream = new SplFileObject($file); 
$grepped = new RegexIterator($stream, $pattern); 

foreach ($grepped as $line) {
    echo $line;
}

输出($file包含$ pattern的所有行):

$grepped = new RegexIterator($stream, $pattern); 
foreach ($grepped as $line) {
    echo $line;
}