(PHP 4 >= 4.0.2, PHP 5, PHP 7)
imagetypes — 锟斤拷锟截碉拷前 PHP 锟芥本锟斤拷支锟街碉拷图锟斤拷锟斤拷锟斤拷
锟斤拷锟斤拷锟斤拷锟皆憋拷锟斤拷锟街段凤拷式锟斤拷锟斤拷锟诫当前 PHP 锟芥本锟斤拷锟斤拷锟斤拷 GD
锟斤拷锟斤拷支锟街碉拷图锟斤拷锟绞斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷陆锟斤拷锟斤拷IMG_GIF
| IMG_JPG
| IMG_PNG
| IMG_WBMP| IMG_XPM锟斤拷
锟斤拷锟斤拷要锟斤拷锟斤拷欠锟街э拷锟� PNG锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷
Example #1 imagetypes() 锟斤拷锟斤拷
<?php
if (imagetypes() & IMG_PNG) {
echo "PNG Support is enabled";
}
?>