How the file turns base64 output

The data URI scheme is defined in RFC2397 to embed some small data directly into the Web page without having to load it from an external file.

Advantages: Reduce the number of HTTP connections.

Disadvantage: Files of this format will not be cached by the browser.

It is not recommended to use "more than 20KB" file encoding, too large files are counterproductive.

The basic use format for Data:uri is as follows:

Data:[<mime-type>][;base64|charset=some_charset],<data>

Mime-type is the MIME type of the embedded data, such as the PNG picture is image/png.

If followed by Base64, the following data is encoded using the Base64 method

The types that Data URI scheme supports are:

Data:, Text data

Data:text/plain, Text data

data:text/html,html Code

Data:text/html;base64,base64 coded HTML code

DATA:TEXT/CSS,CSS Code

Data:text/css;base64,base64 coded CSS Code

Data:text/javascript,javascript Code

Data:text/javascript;base64,base64 coded JavaScript code

DATA:IMAGE/GIF;BASE64,BASE64 encoded GIF image data

DATA:IMAGE/PNG;BASE64,BASE64 encoded PNG image data

DATA:IMAGE/JPEG;BASE64,BASE64 encoded JPEG image data

DATA:IMAGE/X-ICON;BASE64,BASE64 encoded icon image data

For example: converted to the data URI

PHP Conversion Method:

/** file base64 Output 
* @param  string $file file path 
* @return string Base64 string
/function FileToBase64 ( $file) {  
    $base 64_file = ';  
    if (file_exists ($file)) {  
        $mime _type= mime_content_type ($file);  
        $base 64_data = Base64_encode (file_get_contents ($file));  
        $base 64_file = ' data: '. $mime _type. Base64, '. $base 64_data;  
    }  
    return $base 64_file;  
}  
      
/** base64 Output 
* @param  string $base 64_data base64 Data 
* @param  string $file        The path of the file to be saved 
* More highlights of this column: http://www.bianceng.cnhttp://www.bianceng.cn/webkf/tools/
* @return Boolean 
/
function Base64tofile ($base 64_data, $file) {  
    if (! $base 64_data | |! $file) {return  
        false;  
    }  
    Return file_put_contents ($file, Base64_decode ($base 64_data), true);  

Demo

File to base64 //base64 to file $file = "Test.jpg"; $data = '/9j/4aaqskzjrgabaqeayabgaad/ 2wbdaaggbgcgbqghbwcjcqgkdbqndasldbksew8uhrofhh0ahbwgjc4nicisixwckdcpldaxndq0hyc5ptgypc4zndl/ 2wbdaqkjcqwldbgndrgyirwhmjiymjiymjiymjiymjiymjiymjiymjiymjiymjiymjiymjiymjiymjiymjiymjiymjl/ waarcablaesdasiaahebaxeb/8qahwaaaqubaqebaqeaaaaaaaaaaaecawqfbgcicqol/ 8qatraaagedawieawufbaqaaaf9aqidaaqrbrihmuege1fhbyjxfdkbkaeii0kxwrvs0fakm2jyggkkfhcygroljicokso0nty3odk6q0rfrkdisuptvfvwv1 hzwmnkzwznaglqc3r1dnd4exqdhiwgh4ijipktljwwl5izmqkjpkwmp6ipqrkztlw2t7i5usldxmxgx8jjytlt1nxw19jz2uhi4+ tl5ufo6erx8vp09fb3+pn6/8qahweaawebaqebaqebaqaaaaaaaaecawqfbgcicqol/ 8qatreaagecbaqdbacfbaqaaqj3aaecaxeebsexbhjbuqdhcrmimoeifekrobhbcsmzuvavynlrchyknoel8rcygromjygpkju2nzg5okneruzhselku1rvvl Dywvpjzgvmz2hpann0dxz3ehl6gooehyahiimkkpoulzaxmjmaoqokpaanqkmqsro0tba3ulm6wspexcbhymnk0tpu1dbx2nna4upk5ebn6onq8vp09fb3 +pn6/9oadambaairaxeapwd2vaxvvu5wmda9kqzu2f4cf7orqcgnidg8d+vnkt0mqkhawrz4rtgzonm1uy0rjdosoa5jihfevelvgoni+ec1t0kkqknmowwp4dq6z4k6z/wj+jnbrgm5uhhwdfchr/8awrw+ 3jmpjpzm3najg0ic7noxxlqbtljsi+gucr1j4wvi2cz7wh94dbrgnviywowtjmqblwxpp4irwpc6mvoelw+kpxi+ rivpotxnw1g6n0rz412ky6dsa5fwdq1hhq62+pkmf+b0iz+ne1vodo1us1ph51s4bxt6f/ wqj2turbgci03huegzr6hfnakcjfrp61nf4o1owmpthpst/iv7vb2gjab/s6q47p2rwifmsyg6dj3fv7vddlka3ldjz+a/ lsadgte08uibkkvqqmbjtgqyhg42nudvoxop4x8a7aebu7axofkegwi7ncf6v5fepraajzpgrx1hromworw/lxkhiojy+7/n+tcnq/ goyw3sacssno8p8ggsrcz5hudaeudu6bhvrqw0sejzrzkpycr2ymvmxalgkzkhfex674wt54y1sgj+x7o6zfckmj3ez3fuvvmgo1tx6dt+ futdetucojly9qo78v6h4v8fxomwlff6jcewvcbgsmfuciua1lwrc6dbbspgxecmdo4kahj8xzwrlzxee/2wctflxud9j/k0mlihrq+ ibhu7xvirna3cz7hnmzjh41orwuywcj868m8o6hqngu// alnutfpbugkcfum70pufsvr7fu9rnt0lnrzw7hnzldojd6qtkevncltcpu4rquj08kyupc0khgqonfj+ Vvmseylbusep3srwfbfa32ya3vkzcvgadgmnhsppxfjayygcpqsxxit3fhmptddptzlu32svsfso6gr5gtze0mik6n95wgc1ig3sa5yqzmwuzun5fxp0erxej 2sxqwhu45qhpl3nju29itufdltkgktwedhll5k49h2/lxnwsafp2k+kbhjrpyjzkhskf/8alqf4it07v6qbqnrqsi4ferga45rzxxpoftrlxji5zttmamidftnlnz24a+lbxd1dig5vs5filtldx30getxezpggztq9mkd/ xpt54st7fw7xu5h3zaeai15joachhstn8kfy2f/o2jr289xhczfdgcpy3pv7ac1xmt6v4ruzle+1sck2j+ w3t7hx8vuqut9t61ufqtkxyv6n9huffns+obncxephgctn+hcoudkmoht4xdmtrefyscqgzs1zv2sahxfist3eykw8qsu5zka4ycc4a/ su2nkjkllxoxugeekpt6uthrdg1kpzwapr/fcyaoe1sriks7qxhxomyhpkvlah4y0q4+ y3p2wnb5u14hkmq4ysr7vxdt43uplrrdxbnunokj2mzjmqd1b/ i59efeufulgs2ytribyzk5gnjbo5fcdqexb70cl9jgaurdz6jjtbzyw1uqkmavfocjsahks7axcsqmgq90zg/ wcncd4k8vgxqlttzwcxtshimcn32vejahtj+vb82ossgh5hx6yxwfitiepx3kop50yrsssbaaswj+ udskfjxnt94ontfqjpv9gkuvhj6jg7mh47a7dxxrrhkxu6qwz+p4ry7w7i2hap7zalpexwwdyipt+ v5vuypws2olw9m29zzk8z2mnk14b64vcjlgtu0wxlzk7jnrwdvc88ex2mtij6bdeq3gni8m85dwboapt61h6vf4bvcbw4lid1b/ Dzcdi7g5xwxpwllczxzi789extbxpa6drwqssuc3k5ssjtnl11bztwc2ckny3yqqjlt5phpa9a7ez8j3iwcszeekoxdkh4b9bxe6rhmuswedqajxmu3jigp /rv7hg0gwebekh7gnxnxdwsxs7l1opruhz6nigpw9slwutp/nqqbuxjjx6vkjdaz+ya4bbvwjlcr9rvubqydx5bcofwfttxou+ 7xzujjocttlbaemqabaztlgt5t4r7ngzxhlgcm+p496v6b4516xj2per3uechllnxhtnrisizd7dmlhdo3qgqvyj/apwpat7vnlsu1jalsirjznowxgb/acycgduecdiosq9nye2+jmqiyi/0+ 0uycw3xopqkhoaeebxha1qck8wksyxht0l3rg/z5xpq+ukqryo7ruynax+fpwrhkbjgqcfrrszrl3sjqopwxdys/yryak/ Lsip5jh8q6xrb0xgh28yrfhgykykjepbd1i9b2rnbuckvjgdasszyhpyk623gigcqxifjvqqopvvwipjqtz0/gbqjquo3n7ozjfbkeudjczd+i  
      
/8aovenqafylao8rputwb4hru8c6zkow8u+sru7mzcmn8ab+fdraoptk47etztrcrwfkrnk9z//2q== ';  
if (Base64tofile ($data, $file)) {echo '  '; }