Question

我有三个php文件：engine.php，links.php和test.php

理论上，当我在test.php中调用_insert()函数时，它应该用links.php的输出替换一个字符串，而忽略ob_start()和ob_get_clean()，并输出links.php刚刚回应。

engine.php

function db() {
    require("config.php");
    $conn = @mysql_connect($host, $uname, $pass) or die("DB error: ".mysql_error());
    @mysql_select_db($db) or die("DB error: ".mysql_error());
    @mysql_query("SET character_set_results = 'utf8', character_set_client = 'utf8', character_set_connection = 'utf8', character_set_database = 'utf8', character_set_server = 'utf8'"); #UTF-8 FIX
}

function _include($x) {
    if (preg_match("/<!--Include:(.*)-->/", $x, $matches)){

        ob_start();
        include($matches[1]);
        $output = ob_get_clean();

        return preg_replace("/<!--Include:(.*)-->/", $output, $x);
    }

}

links.php

<?php
$query = @mysql_query("SELECT title, description, url FROM links ORDER BY id") or die("DB error: ".mysql_error());

while($row = @mysql_fetch_array($query)) {
    $url = $row["url"];
    $title = $row["title"]; 
    $description = $row["description"];
    echo "<a href=\"$url\">$title</a>: $description";
}

@mysql_close($conn) or die(mysql_error());
?>

test.php的

<?php

require("engine.php");

db();

echo _include("<div><!--Include:links.php--></div>");

?>

它不会在div中输出一系列链接，而是从links.php中跳过返回完全结束的回声，就好像只有一个包含而没有ob_start()和ob_get_clean()。

为什么？

Answer 1

您可以从links.php返回一个字符串：

<?php
$query = @mysql_query("SELECT title, description, url FROM links ORDER BY id") or die("DB error: ".mysql_error());

$links =''; //

while($row = @mysql_fetch_array($query)) {
    $url = $row["url"];
    $title = $row["title"]; 
    $description = $row["description"];
    $links .= "<a href=\"$url\">$title</a>: $description";//
}

@mysql_close($conn) or die(mysql_error());
return $links;//

然后，在engine.php中：

function _include($x) {
    if (preg_match("/<!--Include:(.*)-->/", $x, $matches)){

        //ob_start();
        $output = include($matches[1]);
        //$output = ob_get_clean();

        return preg_replace("/<!--Include:(.*)-->/", $output, $x);
    }

}

包含和ob_get_clean无法正常工作

1 个答案: