How to change the color of words in an array in PHP-PHP Problem-php.cn

How to change the color of words in an array in PHP

PHPz

Release： 2023-04-26 14:38:30

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PHP is a widely used programming language mainly used for web development. In web development, we often need to process arrays, including sorting, filtering, modifying and other operations on the elements in the array. Among them, modifying the color of array elements is also a common requirement.

Changing the color of the words in the array can be achieved through CSS styles. The specific steps are as follows:

Define an array in PHP that contains the string whose color needs to be modified.

$arr = array("Hello, world!", "Welcome to PHP!", "I love coding.");

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Introduce the CSS file into the HTML file and define a class to modify the string color.

<head>
  <link rel="stylesheet" href="style.css">
</head>
<body>
  <div class="colorful-text"></div>
</body>

<style>
  .colorful-text {
    color: red; /* 修改颜色 */
  }
</style>

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Use PHP's loop statement to traverse the array, splice the array elements into an HTML string, and add classes to specific elements.

$html = '';
foreach ($arr as $value) {
  $html .= "<p class=&#39;colorful-text&#39;>$value</p>";
}

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Output the spliced HTML string to the page.

echo $html;

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In this way, you can see the string whose color has been modified on the page.

It should be noted that using CSS to modify the color only changes the display effect and does not modify the array element itself. If you need to modify the array elements themselves, you can use PHP's built-in string functions for processing. For example, use the substr function to intercept the string and insert the html tag at the location that needs to be modified.

$color_str = "<span class=&#39;red&#39;>$substr</span>";

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In short, changing the color of the words in the array is a relatively simple operation in PHP. By using CSS and string functions, we can easily achieve the effect of modifying the color. However, it should be noted that in actual development, the most suitable method should be selected according to specific needs to ensure the performance and maintainability of the code.

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