给老白写的一个工具函数 PHP打印匹配行
function se_search_line($filename, $pattern){
if (is_readable($filename)) $lines = file($filename);
else return '';
$rs = array();
if (!empty($lines))
{
foreach ($lines as $key => $value) {
if (preg_match($pattern, $value))
{
$rs = $value;
}
}
}
if ( !empty($rs) )
{
$sp = PHP_SAPI === 'cli' ? "\n" : "<br>";
foreach ($rs as $line => $value) {
//echo "#line: {$line}#{$sp}";
echo "{$value}";
}
}
}
// demo
se_search_line(__FILE__, "/lines/");
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