PHP 中高级演示文稿文本提取

开发人员需要从演示文稿中提取文本并不少见。为此，您需要提取演示文稿中所有幻灯片上所有形状的文本。本文介绍了如何使用 Aspose.Slides 从 Microsoft PowerPoint PPTX 演示文稿中提取文本。

从幻灯片提取文本

Aspose.Slides for PHP via Java provides the SlideUtil class. This class exposes a number of overloaded static methods for extracting the entire text from a presentation or slide. To extract the text from a slide in a PPTX presentation, use the getAllTextBoxes overloaded static method exposed by the SlideUtil class. This method accepts the Slide object as a parameter. Upon execution, the Slide method scans the entire text from the slide passed as parameter and returns an array of TextFrame objects. This means that any text formatting associated with the text is available. The following piece of code extracts all the text on the first slide of the presentation:

  # 实例化代表 PPTX 文件的 Presentation 类
  $pres = new Presentation("demo.pptx");
  $Array = new java_class("java.lang.reflect.Array");
  try {
    foreach($pres->getSlides() as $slide) {
      # 从 PPTX 的所有幻灯片获取 ITextFrame 对象的数组
      $textFramesPPTX = SlideUtil->getAllTextBoxes($slide);
      # 遍历 TextFrames 数组
      for($i = 0; $i < java_values($Array->getLength($textFramesPPTX)) ; $i++) {
        # 遍历当前 ITextFrame 中的段落
        foreach($textFramesPPTX[$i]->getParagraphs() as $para) {
          # 遍历当前 IParagraph 中的部分
          foreach($para->getPortions() as $port) {
            # 显示当前部分的文本
            echo($port->getText());
            # 显示文本的字体大小
            echo($port->getPortionFormat()->getFontHeight());
            # 显示文本的字体名称
            if (!java_is_null($port->getPortionFormat()->getLatinFont())) {
              echo($port->getPortionFormat()->getLatinFont()->getFontName());
            }
          }
        }
      }
    }
  } finally {
    $pres->dispose();
  }

从演示文稿提取文本

To scan the text from the whole presentation, use the getAllTextFrames static method exposed by the SlideUtil class. It takes two parameters:

1. First, a Presentation object that represents the presentation from which the text is being extracted.
2. Second, a boolean value determining whether the master slide is to be included when the text is scanned from the presentation. The method returns an array of TextFrame objects, complete with text formatting information. The code below scans the text and formatting information from a presentation, including the master slides.

  # 实例化表示 PPTX 文件的 Presentation 类
  $pres = new Presentation("demo.pptx");
  $Array = new java_class("java.lang.reflect.Array");
  try {
    # 从 PPTX 的所有幻灯片获取 ITextFrame 对象数组
    $textFramesPPTX = SlideUtil->getAllTextFrames($pres, true);
    # 遍历 TextFrames 数组
    for($i = 0; $i < java_values($Array->getLength($textFramesPPTX)) ; $i++) {
      # 遍历当前 ITextFrame 中的段落
      foreach($textFramesPPTX[$i]->getParagraphs() as $para) {
        # 遍历当前 IParagraph 中的部分
        foreach($para->getPortions() as $port) {
          # 显示当前部分的文本
          echo($port->getText());
          # 显示文本的字体高度
          echo($port->getPortionFormat()->getFontHeight());
          # 显示文本的字体名称
          if (!java_is_null($port->getPortionFormat()->getLatinFont())) {
            echo($port->getPortionFormat()->getLatinFont()->getFontName());
          }
        }
      }
    }
  } finally {
    $pres->dispose();
  }

分类和快速文本提取

The new static method getPresentationText has been added to Presentation class. There are three overloads for this method:

FAQ

在文本提取过程中，Aspose.Slides 处理大型演示文稿的速度如何？

Aspose.Slides 经过高性能优化，即使是 large presentations 也能高效处理，适用于实时或批量处理场景。

Aspose.Slides 能否从演示文稿中的表格和图表提取文本？

是的，Aspose.Slides 完全支持从表格、图表以及其他复杂幻灯片元素中提取文本，让您能够轻松访问和分析所有文本内容。

提取演示文稿文本是否需要特殊的 Aspose.Slides 许可证？

您可以使用 Aspose.Slides 的免费试用版提取文本，但它会有一些限制，例如只能处理有限数量的幻灯片。若要无限制使用并处理更大的演示文稿，建议购买正式许可证。