$file = file_get_contents("http://www.bigsite.com");
我怎样才能删除包含单词“hello”的字符串$file
中的所有行?
答案 0 :(得分:9)
$file = file_get_contents("http://www.bigsite.com");
$lines = explode("\n", $file);
$exclude = array();
foreach ($lines as $line) {
if (strpos($line, 'hello') !== FALSE) {
continue;
}
$exclude[] = $line;
}
echo implode("\n", $exclude);
答案 1 :(得分:2)
$file = file_get_contents("http://www.example.com");
// remove sigle word hello
echo preg_replace('/(hello)/im', '', $file);
// remove multiple words hello, foo, bar, foobar
echo preg_replace('/(hello|foo|bar|foobar)/im', '', $file);
编辑删除行
// read each file lines in array
$lines = file('http://example.com/');
// match single word hello
$pattern = '/(hello)/im';
// match multiple words hello, foo, bar, foobar
$pattern = '/(hello|foo|bar|foobar)/im';
$rows = array();
foreach ($lines as $key => $value) {
if (!preg_match($pattern, $value)) {
// lines not containing hello
$rows[] = $line;
}
}
// now create the paragraph again
echo implode("\n", $rows);
答案 2 :(得分:1)
你走了:
$file = file('http://www.bigsite.com');
foreach( $file as $key=>$line ) {
if( false !== strpos($line, 'hello') ) {
unset $file[$key];
}
}
$file = implode("\n", $file);