'
), array (
'<',
'>'
), $str );
}
function random(int $name_laenge): string {
$zeichen = "abcedfghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRTSUVWXYZ0123456789";
$name_neu = "";
@mt_srand ( ( double ) microtime () * 1000000 );
for($i = 0; $i < $name_laenge; $i ++) {
$r = mt_rand ( 0, strlen ( $zeichen ) - 1 );
$name_neu .= $zeichen[$r];
}
return $name_neu;
}
function startsWith(string $haystack, string $needle): bool {
$length = strlen ( $needle );
return (substr ( $haystack, 0, $length ) === $needle);
}
function endsWith(string $haystack, string $needle): bool {
$length = strlen ( $needle );
return $length === 0 || (substr ( $haystack, - $length ) === $needle);
}
function onlyAlpha(string $str, string $zus = ''): string {
return preg_replace ( "/[^a-zA-Z0-9 \-\{$zus}_]+/", "", $str );
}
function shortener(string $str, int $len = 50, string $fill = '...'): string {
if (strlen ( $str ) > $len) {
$str = substr ( $str, 0, $len - strlen ( $fill ) ) . $fill;
}
return $str;
}
function isEmail(string $str): string|false {
$match = preg_match ( "/[a-zA-Z0-9\-\_\.]*\@[a-zA-Z0-9\-\_\.]*.[a-z]{2,10}/", $str );
if ($match) {
return $str;
}
return false;
}
function markUp(string $text): string {
$r = '';
$lv = 0;
foreach ( explode ( "\n", $text ) as $t ) {
$nlv = 0;
if (startsWith ( '**** ', $t )) {
$t = substr ( $t, 5 );
$nlv = 4;
}
if (startsWith ( '*** ', $t )) {
$t = substr ( $t, 4 );
$nlv = 3;
}
if (startsWith ( '** ', $t )) {
$t = substr ( $t, 3 );
$nlv = 2;
}
if (startsWith ( '* ', $t )) {
$t = substr ( $t, 2 );
$nlv = 1;
}
if ($lv != $nlv) {
while ( $lv < $nlv ) {
$text .= '';
$lv ++;
}
while ( $lv > $nlv ) {
$text .= '
';
$lv --;
}
}
if (startsWith ( $t, '!!!!! ' )) {
$t = '' . substr ( $t, 6 ) . '
';
}
if (startsWith ( $t, '!!!! ' )) {
$t = '' . substr ( $t, 5 ) . '
';
}
if (startsWith ( $t, '!!! ' )) {
$t = '' . substr ( $t, 4 ) . '
';
}
if (startsWith ( $t, '!! ' )) {
$t = '' . substr ( $t, 3 ) . '
';
}
if (startsWith ( $t, '! ' )) {
$t = '' . substr ( $t, 2 ) . '
';
}
if ($lv == 0) {
$r .= $t;
} else {
$r .= '' . $t . '';
}
// var_dump ( $t );
}
while ( $lv > 0 ) {
$r .= '';
$lv --;
}
return $r;
}
function onlySimpleHTML(string $s, ?array $allowedTags = null): string {
if ($s === '') {
return '';
}
if ($allowedTags === null) {
$allowedTags = array (
'b',
'u',
'i',
'span',
'br',
'h1',
'h2',
'h3',
'h4',
'h5',
'h6',
'li',
'ul',
'ol',
'pre'
);
}
$allow = array_fill_keys ( array_map ( 'strtolower', $allowedTags ), true );
$selfClosing = array (
'br' => true
);
$parts = preg_split ( '/(<[^>]*>)/', $s, - 1, PREG_SPLIT_DELIM_CAPTURE );
if ($parts === false) {
return htmlspecialchars ( $s, ENT_QUOTES | ENT_SUBSTITUTE, 'UTF-8' );
}
$out = '';
foreach ( $parts as $part ) {
if ($part === '') {
continue;
}
if ($part[0] !== '<') {
$out .= $part;
continue;
}
if (preg_match ( '/^<\s*(\/?)\s*([a-z0-9]+)\s*(\/?)\s*>$/i', $part, $m ) !== 1) {
$out .= htmlspecialchars ( $part, ENT_QUOTES | ENT_SUBSTITUTE, 'UTF-8' );
continue;
}
$isClose = ($m[1] === '/');
$tag = strtolower ( $m[2] );
$isSelfClose = ($m[3] === '/');
if (! isset ( $allow[$tag] )) {
$out .= htmlspecialchars ( $part, ENT_QUOTES | ENT_SUBSTITUTE, 'UTF-8' );
continue;
}
if ($isClose) {
if (isset ( $selfClosing[$tag] )) {
continue;
}
$out .= "";
continue;
}
if ($isSelfClose && ! isset ( $selfClosing[$tag] )) {
$out .= "";
continue;
}
if (isset ( $selfClosing[$tag] )) {
$out .= "<{$tag}>";
continue;
}
$out .= "<{$tag}>";
}
return $out;
}
function linkify(string $input): string {
$pattern = '@(http(s)?://[a-zA-Z0-9/\.\#\-\_]*)@';
return $output = preg_replace ( $pattern, '$1', $input );
}
function inStr(string $needle, string $haystack): bool {
if (strpos ( $haystack, $needle ) !== false) {
return true;
}
return false;
}
?>