When the editor opens, cut and paste the contents of Listing 1 into the editor.
当编辑器打开时,剪切清单1的内容并将它粘贴到编辑器中。
The first command in Listing 4 shows that the file size has been cut significantly.
清单4中的第一个命令显示文件大小已经显著地减少。
If you are, you should cut and paste Listing 1 and put it in the same directory as your PHP scripts.
如果要测试,应当剪切和粘贴清单1,并将它与php脚本放在同一目录下。
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