php 判断是不是为PNG格式的图片

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Release: 2016-06-13 13:04:26
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php 判断是否为PNG格式的图片


function isPng($pngPath)
{
	$size = getimagesize ($pngPath); 

	$file_extension = strtolower(substr(strrchr($pngPath,'.'),1));

	if('image/png' != $size['mime'] || $file_extension != 'png')
	{ 
		return FALSE; 
	} 
	else {
		return TRUE;
		
	}
	
}
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