** When you write a PHP project in Zend Studio, you find that the system function is being debugged properly, but when you write code, you tell the function “Call to undefined function “is not defined, The syntax detection status field bar on the left always shows a small yellow triangle exclamation point. **’


1. Modify the project. buildpath file

<? The XML version = "1.0" encoding = "utf-8"? > <buildpath> <buildpathentry kind="src" path=""/> <buildpathentry kind="con" path="org.eclipse.php.core.LANGUAGE"/># Add kind="con" </buildpath>

2. Reset the project compilation state

Project -> Clean -> Clean all projects

3. Recompile the project

Project -> Build All

4, complete! See if the little yellow cold icon disappeared ~

Note: The PHP Language Library contains prototype definitions of system functions and extended Library functions that Zend Studio can use for code hints and completion when these functions are called during coding.