PHP文件读写

1. $handle = @ fopen ( "demo.txt" , "r" );
2. if ( $handle ) {
3. while (( $buffer = fgets ( $handle , 4096 )) !== false ) {
4. echo $buffer ;
5. }
6. if (! feof ( $handle )) {
7. echo "Error: unexpected fgets() fail\n" ;
8. }
9. fclose ( $handle );
10. }
12. echo '

    ---

    ';
14. $length= readfile("demo.txt");
16. echo '

    ---

    ';
18. $file_str = 'demo.txt';
20. if(file_exists($file_str))
21. {
22. echo file_get_contents($file_str);
24. }
26. ?>

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PHP