# rpm_is_valid

(PECL rpmreader >= 0.1.0)

rpm_is_valid — Tests a filename for validity as an RPM file

### 说明

rpm_is_valid ( string `$filename` ) : bool

rpm_is_valid() will test an RPM file for validity as an RPM file. This is not the same as rpm_open() as it only checks the file for validity but does not return a file pointer to be used by further functions.

### 参数

`filename`

  The filename of the RPM file you wish to check for validity.

### 返回值

成功时返回 `TRUE`， 或者在失败时返回 `FALSE`。

### 范例

Example #1 rpm_is_valid() example

    <?php

    $file = "/path/to/file.rpm";

    if (rpm_is_valid($file)) {
        echo "File is recognized as an RPM file.<br>\n";
    }
    else {
        echo "File is not recognized as an RPM file.<br>\n";
    }

    ?>