如何使用PHP将文本文件搜索结果以表格形式展示

Hey there! I've adjusted your code to display the search results in a neat HTML table with two clear columns: Filename and Line Number. This makes the results much easier to scan at a glance. Here's the revised code with explanations of the key changes:

Key Changes Made: #

• Result Collection: Instead of echoing results as we read each file, we first collect all matches into an array. This lets us build a clean table once all files are processed.
• Avoid Duplicate Line Entries: If a line has multiple instances of the keyword, we only record the line number once (no more repeated line numbers for the same line).
• Table Layout: Added a styled HTML table to present results clearly, with headers for Filename and Line Number.
• Empty Result Handling: Added a message to let the user know if no matches were found.
• Cleaner Output: Removed redundant echo statements and streamlined the file reading logic.

Revised Full Code #

<?php
$results = [];
if(isset($_POST["search"])) {
    $search = trim($_POST['name']);
    // Only proceed if search term isn't empty
    if(!empty($search)) {
        echo "<h2>Search results for: <em>$search</em></h2>";
        foreach(glob($_SERVER['DOCUMENT_ROOT']."./readfiletest/*.txt") as $txts) {
            $line = 1;
            $myFileLink = fopen($txts, 'r');
            while(!feof($myFileLink)) {
                $myFileContents = fgets($myFileLink);
                // Check if the keyword exists in the line (case-insensitive)
                if(preg_match('/'.preg_quote($search,'/').'/i', $myFileContents)) {
                    // Add to results array (avoid duplicates for same line/file)
                    $results[] = [
                        'filename' => basename($txts),
                        'line' => $line
                    ];
                }
                ++$line;
            }
            fclose($myFileLink);
        }
    } else {
        echo "<p>Please enter a search term!</p>";
    }
}
?>
<html>
<head>
    <meta http-equiv="Content-Language" content="ar-sa">
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    <style>
        #form {
            background: -webkit-linear-gradient(bottom, #CCCCCC, #EEEEEE 175px);
            background: -moz-linear-gradient(bottom, #CCCCCC, #EEEEEE 175px);
            background: linear-gradient(bottom, #CCCCCC, #EEEEEE 175px);
            margin: auto;
            width: 300px;
            height: 200px;
            position: absolute;
            font-family: Tahoma, Geneva, sans-serif;
            font-size: 14px;
            font-style: italic;
            line-height: 24px;
            font-weight: bold;
            color: #09C;
            text-decoration: none;
            border-radius: 10px;
            padding: 10px;
            border: 1px solid #999;
            border: inset 1px solid #333;
            -webkit-box-shadow: 0px 0px 8px rgba(0, 0, 0, 0.3);
            -moz-box-shadow: 0px 0px 8px rgba(0, 0, 0, 0.3);
            box-shadow: 0px 0px 8px rgba(0, 0, 0, 0.3);
        }
        .results-table {
            margin: 250px auto 0;
            border-collapse: collapse;
            width: 80%;
            font-family: Arial, sans-serif;
        }
        .results-table th, .results-table td {
            border: 1px solid #ddd;
            padding: 12px;
            text-align: left;
        }
        .results-table th {
            background-color: #f2f2f2;
            font-weight: bold;
            color: #333;
        }
        .results-table tr:hover {
            background-color: #f5f5f5;
        }
        .no-results {
            text-align: center;
            margin-top: 250px;
            font-family: Arial, sans-serif;
            color: #666;
        }
    </style>
</head>
<body>
    <div id="form">
        <form action="index.php" method="post">
            <h1 align="center">Search Form</h1>
            <p>Enter your string: <input type="text" id="idName" name="name" value="<?php echo isset($_POST['name']) ? htmlspecialchars($_POST['name']) : ''; ?>" /></p>
            <p align="center"><input type="Submit" name="search" value="Search" /></p>
        </form>
    </div>

    <?php if(isset($_POST["search"]) && !empty($search)): ?>
        <?php if(!empty($results)): ?>
            <table class="results-table">
                <thead>
                    <tr>
                        <th>Filename</th>
                        <th>Line Number</th>
                    </tr>
                </thead>
                <tbody>
                    <?php foreach($results as $result): ?>
                        <tr>
                            <td><?php echo htmlspecialchars($result['filename']); ?></td>
                            <td><?php echo $result['line']; ?></td>
                        </tr>
                    <?php endforeach; ?>
                </tbody>
            </table>
        <?php else: ?>
            <p class="no-results">No matches found for "<em><?php echo htmlspecialchars($search); ?></em>".</p>
        <?php endif; ?>
    <?php endif; ?>
</body>
</html>

Additional Notes: #

• Added htmlspecialchars() to output to prevent XSS vulnerabilities (always a good practice when displaying user input).
• Styled the table with hover effects and clean borders for better readability.
• Moved the results display below the form so it doesn't overlap.
• Added a check to prevent empty search queries from running.

内容的提问来源于stack exchange，提问作者Rany Fahed