How to get the FLV file time in PHP? The answer is to fopen the file and check that the FLV file is HEX data and convert it to number.
The code is as follows:
functionBigEndian2Int($byte_word,$signed=false)
{
$int_value =0;
$byte_wordlen=strlen($byte_word);
for($i=0;$i<$byte_wordlen;$i++){
$int_value+=ord($byte_word{$i})*pow(256,($byte_wordlen-1-$i));
}
if($signed){
$sign_mask_bit=0x80<<(8*($byte_wordlen-1));
if($int_value&$sign_mask_bit){
$int_value=0-($int_value&($sign_mask_bit-1));
}
}
return$int_value;
}
functiongetTime($name)
{
if(!file_exists($name)){
return;
}
$flv_data_length=filesize($name);
$fp =@fopen($name,'rb');
$flv_header =fread($fp,5);
fseek($fp,5,SEEK_SET);
$frame_size_data_length =BigEndian2Int(fread($fp,4));
$flv_header_frame_length=9;
if($frame_size_data_length>$flv_header_frame_length){
fseek($fp,$frame_size_data_length-$flv_header_frame_length,SEEK_CUR);
}
$duration=0;
while((ftell($fp)+1)<$flv_data_length){
$this_tag_header=fread($fp,16);
$data_length =BigEndian2Int(substr($this_tag_header,5,3));
$timestamp =BigEndian2Int(substr($this_tag_header,8,3));
$next_offset =ftell($fp)-1+$data_length;
if($timestamp>$duration){
$duration=$timestamp;
}
fseek($fp,$next_offset,SEEK_SET);
}
fclose($fp);
return$duration;
}
functionget_flv_file_time($time)
{
$time=getTime($time);
$num=$time;
$sec=intval($num/1000);
$h =intval($sec/3600);
$m =intval(($sec%3600)/60);
$s =intval(($sec%60));
$tm =$h.':'.$m.':'.$s;
return$tm;
}
?>
Just use get_flv_file_time("your FLV.flv") directly.
