Question

我正在开发一个新闻网站，并允许任何文章的作者决定他们想在文章中添加多少图片。

要包含他们在文章内容正文中输入[image1]所需的图像，然后将其转换为另一页面上的图像src。

我试图编写一段代码来检查用户输入的图像数量以及附带的标题，然后查看是否已为每个图像应用了[image＃]和[caption＃]标记。

所需功能

如果用户选择为文章上传两张图片，则他们还必须插入两个字幕。然后，他们必须在文章的内容中的任何地方陈述[image1] [caption1]和[image2] [caption2]。

如果用户已将图片和字幕发布到表单中，但是没有包含正确数量的[图像＃]和[字幕＃]，我希望使用{{来提示他们这样做1}}。然而，我正在努力实现这一目标。

到目前为止，这是我的代码，如果有人能告诉我我做错了什么，我们将不胜感激。

干杯，富有

strpos()

然后我只想简单地使用C＆amp; P来计算[image＃]标签。

Answer 1

尝试preg_match_all()

如果预期它总是一个连续的字符串（如[image1] [caption1]），你可以这样试试：

<?php

$articleContent = 'The M-209 is a portable, mechanical cipher machine.
[image1][caption1] In this photograph, an intermediate gear unit meshes 
with gears adjoining each key wheel. 
[image2][caption2]Visible to the  left of the image is the typewheel 
that prints out messages and ciphertext onto paper tape.';

// Is something out of place or any captions missing?
preg_match_all( '~(\[image([\d])+\](?!\s*\[caption\\2\]))~i', $articleContent, $matches );

empty( $matches[0] ) or die( 'Please add proper caption to: ' . implode( ', ', $matches[0] ). '.' );

?>

如果在两个相应的标签之间应该是一堆东西，（比如[image1] blah 123 yeah [caption1]）请使用这个正则表达式：

<?php

preg_match_all( '~(\[image([\d]+)\](?!.*\[caption\\2\]))~i', $articleContent, $matches );

?>

这里有一个不同的方法，没有丢失字幕编号报告......

<?php

$articleContent = 'The M-209 is a portable, mechanical cipher 
machine used primarily by the US military in World War II, though 
it remained in active use through the Korean War. 
[image1][caption1] In this photograph, an intermediate gear unit 
meshes with gears adjoining each key wheel. 
[image2][caption2] Visible to the left of the image is the typewheel 
that prints out messages and ciphertext onto paper tape.';

preg_match_all( '~(\[image[0-9]+\])~i', $articleContent, $images_array );

if( !empty( $images_array[0] ) ) {

    preg_match_all( '~(\[caption[0-9]+\])~i', $articleContent, $captions_array );

    if( count( array_unique( $images_array[0] ) ) > count( array_unique( $captions_array[0] ) ) ) {

        echo 'You have not added all of your [caption#] tags in the article content.';
        exit;


    } else {

        echo 'You have added all of your caption tags in the article.';

    }

}

?>

Answer 2

这可能有点矫枉过正，但希望它能给你一些有用的东西。

<?php

$article_content = "abc[image1]def[image2]ghi[image5]jkl[image123]mno" .
    "[imagex]pqr[image3stu[image10]vwximage4]yza[caption3]bcd[caption1]" .
    "efg[caption2]hij[caption5]klm[caption123]nop[caption10]qrs[image100]";


function find_tags($content, $tag_name) {
    $tag_length = strlen($tag_name);
    $ids = [];
    $position = 0;
    while(($position = strpos($content, "[" . $tag_name, $position)) !== false) {
        $end_position = strpos($content, "]", $position);
        if(is_numeric($id = substr($content, $position + $tag_length + 1, $end_position - $position - $tag_length - 1))) {
            $ids[] = $id;
        }
        $position++;
    }
    return $ids;
}

function match_ids($tag_ids) {

    $tag_names = array_keys($tag_ids);

    sort($tag_ids[$tag_names[0]]);
    sort($tag_ids[$tag_names[1]]);

    $missing_ids_in_0 = array_diff(
        $tag_ids[$tag_names[1]],
        $tag_ids[$tag_names[0]]
    );
    $missing_ids_in_1 = array_diff(
        $tag_ids[$tag_names[0]],
        $tag_ids[$tag_names[1]]
    );
    return array(
        $tag_names[0] . "_missing" => $missing_ids_in_0,
        $tag_names[1] . "_missing" => $missing_ids_in_1
    );
}

$tag_ids = array(
    "image" => find_tags($article_content, "image"),
    "caption" => find_tags($article_content, "caption")
);
var_dump($tag_ids);

$match_result = match_ids($tag_ids);
var_dump($match_result);
echo "<br>";

if(sizeof($match_result["image_missing"])) {
    foreach($match_result["image_missing"] as $id) {
        echo "Please add an [image" . $id . "] tag.<br>"; 
    }
}
if(sizeof($match_result["caption_missing"])) {
    foreach($match_result["caption_missing"] as $id) {
        echo "Please add a [caption" . $id . "] tag.<br>"; 
    }
}

?>

输出：

array (size=2)
  'image' => 
    array (size=6)
      0 => string '1' (length=1)
      1 => string '2' (length=1)
      2 => string '5' (length=1)
      3 => string '123' (length=3)
      4 => string '10' (length=2)
      5 => string '100' (length=3)
  'caption' => 
    array (size=6)
      0 => string '3' (length=1)
      1 => string '1' (length=1)
      2 => string '2' (length=1)
      3 => string '5' (length=1)
      4 => string '123' (length=3)
      5 => string '10' (length=2)
array (size=2)
  'image_missing' => 
    array (size=1)
      2 => string '3' (length=1)
  'caption_missing' => 
    array (size=1)
      4 => string '100' (length=3)

Please add an [image3] tag.
Please add a [caption100] tag.

Answer 3

因此，经过一周的尝试解决这个问题，我认为我最好分享答案，因为似乎缺乏人们试图解决这个问题。

<强>解决方案：

$articleContent = $_POST['articleContent'];
$imgCount = count($imgTmp1); // Count files array
$capCount = count($captions); // Count captions array 
$r = 0;
$c = 0;

while($r < $imgCount){

$i = 1;
$z = 1;
$r++;
$c++;

$value = "[image$r]";
for($check = strpos($articleContent,$value);$i<$imgCount;$i++){
}
if($check !== false){
// Your success, if any
} else {
echo "<span class='error'>You need to include '$value' into the article content.</span>";
exit();
}

$value2 = "[caption$c]";
for($check2 = strpos($articleContent,$value2);$z<$capCount;$z++){
}

if($check2 !== false){
// Your success, if any
} else {
echo "<span class='error'>You need to include '$value2' into the article content.</span>";
exit();
}
}

问题不在于变量本身，因为它们在我尝试检查的每个循环中正确回显。问题实际上是strpos。正如您所看到的，我已将strpos插入循环本身，它就像桃子一样。

祝所有其他人在这里遇到同样的问题，祝他们好运，感谢其他人的帮助。

检查字符串包含多个文本

3 个答案: