What should I do if dw cannot precable the php code?

PHP development is one of the most common technologies in web development, and Dreamweaver is the IDE tool of choice for many PHP programmers. However, in the process of using Dreamweaver to develop PHP websites, many people may encounter the problem of "unable to preview". This problem will affect the development and debugging process of the program and greatly affect the development efficiency. This article will detail the causes and solutions to this problem.

1. What is Dreamweaver's "Unable to Preview" problem

The so-called "Unable to Preview" means that Dreamweaver cannot display the PHP syntax as expected when editing a PHP file. Functions such as lighting, code prompts, and code structure, and sometimes even directly displaying a piece of code, bring a lot of trouble to developers.

The root cause of this problem is that Dreamweaver treats PHP as ordinary text and does not perform syntax analysis on the PHP code, resulting in the inability to provide relevant editing highlighting, code prompts, code structure and other functions.

2. Methods to solve the "Cannot Preview" problem in Dreamweaver

Before solving the "Cannot Preview" problem in Dreamweaver, let's list some possible important reasons:

1) Dreamweaver does not support the PHP syntax version you are using. For example, you are using some of the new syntax constructs in PHP 7, and your version of Dreamweaver only supports PHP 5 syntax.

2) The PHP configuration of Dreamweaver is wrong. If PHP is not configured correctly when installing Dreamweaver, it will cause it to fail to recognize common PHP files, resulting in an inability to preview problem.

3) Dreamweaver does not configure the server information correctly. If Dreamweaver cannot correctly connect to the web server, it will not be able to perform syntax parsing and code prompts on PHP files.

The following are the specific methods to solve the "cannot preview" problem of Dreamweaver:

1) Update the PHP version of Dreamweaver

If Dreamweaver does not support the PHP version you are using, You can try updating the PHP version of Dreamweaver. The following are the specific steps to update the PHP version of Dreamweaver:

a. Open Dreamweaver to edit a PHP file. Click the Edit menu and select Preferences.

b. Click the Code Tips tab.

c. Click the "Editor" drop-down menu and select the PHP version. If you cannot find this option, you will need to install a new PHP version and restart Dreamweaver.

d. Click OK to save changes.

2) Manually configure the PHP configuration in Dreamweaver

If the Dreamweaver version you installed does not contain the required PHP version or the PHP installation location is not recognized by Dreamweaver, you can manually configure the PHP configuration in Dreamweaver PHP configuration. Here are the specific steps to manually configure PHP configuration in Dreamweaver:

a. Click the "Website" menu and select "Manage Site".

b. In the Sites panel, select the site you want to edit, and then click Edit.

c. In the "Advanced Settings" tab, click the "Test Connection" button to ensure that Dreamweaver is connected to the correct PHP interpreter.

d. In the Local Information tab, click the Select button and navigate to your PHP interpreter, then click OK.

e. Click OK to save changes.

3) Configure Dreamweaver's server information

If Dreamweaver cannot correctly connect to the Web server, configuring the correct server information may solve the problem of being unable to preview. The following are the specific steps to configure Dreamweaver's server information:

a. Click the "Website" menu and select "Manage Site".

b. In the Sites panel, select the site you want to edit, and then click Edit.

c. In the "Local Information" tab, click the "Test" button to ensure that Dreamweaver can connect to the web server correctly.

d. In the "Remote Information" tab, click the "Test" button to ensure that Dreamweaver can connect to the remote server correctly.

e. If all tests pass, click OK to save the changes.

3. Summary

In the process of using Dreamweaver to develop a PHP website, the "unable to preview" problem may appear at any time. Many programmers will Very confused. But through the introduction of this article, you should already know how to solve this problem. No matter where the problem lies, you only need to check your Dreamweaver version, PHP configuration and server information, and then troubleshoot the problem one by one.

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