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PHP character interception and image filtering function

Source: Internet
Author: User
Keywords Web Programming PHP Tutorials
Tags content expression free of charge function image php programming start
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This article free of charge for your friends to provide a PHP character interception and image filter function Oh, if you like to come in and see this picture filter regular expression test

function Msubstr ($str, $start, $len) {
$tmpstr = "";
$strlen = $start + $len;
for ($i = 0; $i < $strlen; $i + +) {
if (Ord ($str, $i, 1)) > 0xa0) {
$tmpstr. = substr ($str, $i, 2);
$i + +;
Else
$tmpstr. = substr ($str, $i, 1);
}
return $tmpstr;
}

Filter pictures
function Img_empty ($content) {
$content =eregi_replace ("<img [a-za-z0-9~!&.:"/._#=~&%]+) > "," ", $content);
return $content;
}

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