例如，我有这样的代码：
<?php
/**
* Order
*
* The WooCommerce order class handles order data.
*
* @class WC_Order
* @version 1.6.4
* @package WooCommerce/Classes
* @category Class
* @author WooThemes
*/
class WC_Order {
/** @public int Order (post) ID */
public $id;
/** @public string Order status. */
public $status;
/** @public string Order date (placed). */
public $order_date;
/** @public string Order date (paid). */
public $modified_date;
/** @public string Note added by the customer. */
public $customer_note;
/** @public array Order (post) meta/custom fields. */
public $order_custom_fields;
global $wpdb, $woocommerce;
if ( empty( $type ) )
$type = array( 'line_item' );
if ( ! is_array( $type ) )
$type = array( $type );
$items = $this->get_items( $type );
$count = 0;
foreach ( $items as $item ) {
if ( ! empty( $item['qty'] ) )
$count += $item['qty'];
else
$count ++;
}
return apply_filters( 'woocommerce_get_item_count', $count, $type, $this );
}
/**
* Return an array of fees within this order.
*
* @access public
* @return array
*/
public function get_fees() {
return $this->get_items( 'fee' );
}
/**
* Return an array of taxes within this order.
*
* @access public
* @return void
*/
public function get_taxes() {
return $this->get_items( 'tax' );
}
/**
* Get taxes, merged by code, formatted ready for output.
*
* @access public
* @return void
*/
public function get_tax_totals() {
$taxes = $this->get_items( 'tax' );
$tax_totals = array();
foreach ( $taxes as $key => $tax ) {
$code = $tax[ 'name' ];
if ( ! isset( $tax_totals[ $code ] ) ) {
$tax_totals[ $code ] = new stdClass();
$tax_totals[ $code ]->amount = 0;
}
$tax_totals[ $code ]->is_compound = $tax[ 'compound' ];
$tax_totals[ $code ]->label = isset( $tax[ 'label' ] ) ? $tax[ 'label' ] : $tax[ 'name' ];
$tax_totals[ $code ]->amount += $tax[ 'tax_amount' ] + $tax[ 'shipping_tax_amount' ];
$tax_totals[ $code ]->formatted_amount = woocommerce_price( $tax_totals[ $code ]->amount );
}
return apply_filters( 'woocommerce_order_tax_totals', $tax_totals, $this );
}
/**
* has_meta function for order items.
*
* @access public
* @return array of meta data
*/
public function has_meta( $order_item_id ) {
global $wpdb;
return $wpdb->get_results( $wpdb->prepare("SELECT meta_key, meta_value, meta_id, order_item_id
FROM {$wpdb->prefix}woocommerce_order_itemmeta WHERE order_item_id = %d
ORDER BY meta_key,meta_id", absint( $order_item_id ) ), ARRAY_A );
}
/**
* Get order item meta.
*
* @access public
* @param mixed $item_id
* @param string $key (default: '')
* @param bool $single (default: false)
* @return void
*/
public function get_item_meta( $order_item_id, $key = '', $single = false ) {
return get_metadata( 'order_item', $order_item_id, $key, $single );
}
我希望匹配所有Wordpress钩子：“do_action”和“apply_filters”有三个选项： apply_filters（'woocommerce_order_tax_totals'，$ tax_totals，$ this），文件，行号
我可以在这里看到我想要做的一个例子： http://etivite.com/api-hooks/buddypress/trigger/apply_filters/bp_get_total_mention_count_for_user/
http://adambrown.info/p/wp_hooks/hook/activated_plugin?version=3.6&file=wp-admin/includes/plugin.php
我确实试图取出一些东西，但没有成功：
<?php
$path = $_SERVER['DOCUMENT_ROOT'] . '/wp-content/plugins/iphorm-form-builder';
foreach (new RecursiveIteratorIterator(new RecursiveDirectoryIterator($path)) as $filename) {
if (substr($filename, -3) == 'php') {
$file = file($filename);
if ($file !== false) {
$matches1 = preg_grep( '/do_action\((.+)\);/', $file);
$matches2 = preg_grep( '/apply_filters\((.+)\);/', $file );
$arr = array_filter(array_merge($matches1, $matches2));
$out = '';
echo "found in $filename:";
echo "<pre>";
foreach ($arr as $key => $value) {
$out .= $file[$key-2];
$out .= $file[$key-1];
$out .= $file[$key];
$out .= $file[$key+1];
$out .= $file[$key+2];
}
echo htmlentities($out);
echo "</pre>";
} else {
echo "failed reading to array";
}
}
}
答案 0 :(得分：1)
这可以通过利用内置的shell命令非常简单地完成。
<?php
$path = $_SERVER['DOCUMENT_ROOT'] . '/wp-content/plugins/iphorm-form-builder';
foreach (new RecursiveIteratorIterator(new RecursiveDirectoryIterator($path)) as $filename) {
if (substr($filename, -3) == 'php') {
$context = shell_exec('grep -H -n -C4 do_action ' . escapeshellarg($filename));
if (!empty($context)) {
echo "found in $filename:";
echo "<pre>";
echo htmlentities($context);
echo "</pre>";
} else {
echo "failed reading to array";
}
}
}
相关文件：
通过shell执行命令并将完整输出作为字符串
返回
转义一个字符串以用作shell参数
Grep searches the named input FILEs (or standard input if no files are named, or the file name - is given) for lines containing a match to the given PATTERN. By default, grep prints the matching lines. -C NUM, --context=NUM Print NUM lines of output context. Places a line containing -- between contiguous groups of matches. -H, --with-filename Print the filename for each match. -n, --line-number Prefix each line of output with the line number within its input file.
修改
根据项目中的目录和文件数量，它可能不具备高效性。您基本上是在每个文件的新shell中创建一个新进程。那不是很好。如果您希望获得大量数据并在以后解析，请改为：
<?php
$path = $_SERVER['DOCUMENT_ROOT'] . '/wp-content/plugins/iphorm-form-builder';
$grep = shell_exec('grep --include=*.php -RHn -C4 do_action ' . escapeshellarg($path));
$matches = explode("\n--\n", $grep);
if (empty($matches)) {
echo "failed reading to array";
}
else {
foreach ($matches as $match) {
echo "<pre>";
echo htmlentities($match);
echo "</pre>";
}
}
答案 1 :(得分：0)
您不需要逐行循环遍历文件数据。只需读取变量中的数据并应用正则表达式：
$data = file_get_contents( $filename );
if (preg_match_all(
'~((?:[^\n]*\n){0,4}) *do_action\s*\(\s*([^)]+)\s*\)\s*;[^\n]*\n((?:[^\n]*\n){0,4})~',
$data, $arr)) {
// match found, now dump the results
// $arr[1] will print 4 lines before the match
// $arr[2] will print function arguments for do_action
// $arr[3] will print 4 lines after the match
print_r($arr);
}
答案 2 :(得分：0)
鉴于PHP正则表达式引擎的局限性，单独使用正则表达式无法做到这一点。具体来说，令我惊讶的是，你不能看到可变长度的背后。
你需要留意的原因是如果你在连续的行上出现 do_action 或 apply_filters ，那么如果你没有，第一场比赛将阻止第二场比赛展望未来，即使你使用前瞻，也没有办法在不看后面的情况下获得第二场比赛的前两行。更不用说我甚至不知道你是否甚至可以在结果中包含查看断言的内容。
此解决方案创建一个正则表达式来查找函数出现的行，然后使用另外两个正则表达式来查找前后的行。在设计正则表达式时，我注意注意文件的开头和结尾。
$offset = 0;
while (preg_match('/^.*?(?:apply_filters|do_action)\s*\(.+?\)\s*;.*(?:\n\r|\n|\r|$)/m', $file, $match, PREG_OFFSET_CAPTURE, $offset))
{
$index = $match[0][1];
$offset = $index + strlen($match[0][0]);
$hasBefore = preg_match('/(?:.*(?:\n\r|\n|\r).*$)|[^\n\r].*$/',
substr($file, 0, $index), $beforeMatch);
$hasAfter = preg_match('/^(?:.*(?:\n\r|\n|\r|$)){0,2}/',
substr($file, $offset), $afterMatch);
if ($hasBefore) print_r($beforeMatch);
print_r($match[0][0]);
if ($hasAfter) print_r($afterMatch);
}
此前只显示两行，后两行显示。如果你想要更多，你可以使用重复，但在尝试的解决方案中我觉得这是o.p.真的很想。