PHP output extra space or blank line

1, whether the file has a BOM. You can check the encoding format by footstep detection, or by opening it with notepa++.

2. <?php echo ' something ';?> may be your php tag , with spaces or blank lines. The general project is to use the framework, contains a lot of documents, if a file to troubleshoot, it is estimated that there is no such patience. You can write a regular lookup by using the editor's shortcut keys. Reference Regular: \s<\?php is used to see spaces outside the start tag. The general framework does not write the end tag, if you write, also to troubleshoot

3. Note that the file contains, as long as the allowed files are included, can result in extra space output.

PHP output extra space or blank line