PHP -> Ukážkové kódy v PHP -> Je súbor animovaný gif
Funkcia v PHP, ktorá si overí, či sa v súbore nachádza animovaný gif alebo nie.
<?php
function is_ani
($filename)
{
$filecontents=
file_get_contents($filename);
$str_loc=0;
$count=0;
while ($count < 2
) // There is no point in continuing after we find a 2nd frame
{
$where1=
strpos($filecontents,
"\x00\x21\xF9\x04",
$str_loc);
if ($where1 === FALSE)
{
break;
}
else
{
$str_loc=
$where1+1;
$where2=
strpos($filecontents,
"\x00\x2C",
$str_loc);
if ($where2 === FALSE)
{
break;
}
else
{
if ($where1+8 ==
$where2)
{
$count++;
}
$str_loc=
$where2+1;
}
}
}
if ($count > 1
)
{
return(true
);
}
else
{
return(false
);
}
}
exec("ls *gif" ,
$allfiles);
foreach ($allfiles as
$thisfile)
{
if (is_ani
($thisfile))
{
echo "$thisfile is animated<BR>\n";
}
else
{
echo "$thisfile is NOT animated<BR>\n";
}
}
?>