120 lines
3.0 KiB
PHP
120 lines
3.0 KiB
PHP
<?php
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namespace App\Services;
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use App\Exceptions\E;
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class Utils
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{
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/**
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* Simple SQL injection protection
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*
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* @param string $string
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* @return string
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*/
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public static function convertString($string) {
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return addslashes(trim($string));
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}
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/**
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* Get the value of key in an array if index exist
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*
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* @param string $key
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* @param array $array
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* @return string|boolean
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*/
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public static function getValue($key, $array) {
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return array_key_exists($key, $array) ? $array[$key] : false;
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}
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/**
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* Generate random string
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*
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* @param int $length
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* @return string
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*/
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public static function generateRndString($length) {
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$chars = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789!@#$%^&*()-_ []{}<>~`+=,.;:/?|';
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$rnd_string = '';
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for ($i = 0; $i < $length; $i++) {
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$rnd_string .= $chars[mt_rand(0, strlen($chars) - 1)];
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}
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return $rnd_string;
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}
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public static function getTimeFormatted($timestamp = 0)
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{
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// set default time zone to UTC+8
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date_default_timezone_set('Asia/Shanghai');
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return ($timestamp == 0) ? date('Y-m-d H:i:s') : date('Y-m-d H:i:s', $timestamp);
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}
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public static function getNameOrEmail(\App\Models\User $user)
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{
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return ($user->getNickName() == '') ? $_SESSION['email'] : $user->getNickName();
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}
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public static function getAvatarFname(\App\Models\User $user)
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{
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$fname = base64_encode($user->email).".png";
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if (Option::get('avatar_query_string')) {
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$fname .= '?v='.$user->getAvatarId();
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}
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return $fname;
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}
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/**
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* Generate omitted string
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*
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* @param string $str
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* @param int $length
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* @param boolean $append
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* @return string
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*/
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public static function getStringOmitted($str, $length, $append = true)
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{
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$str = trim($str);
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$strlength = strlen($str);
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if ($length == 0 || $length >= $strlength) {
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return $str;
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} elseif ($length < 0) {
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$length = $strlength + $length;
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if ($length < 0) {
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$length = $strlength;
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}
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}
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if (function_exists('mb_substr')) {
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$newstr = mb_substr($str, 0, $length, 'utf-8');
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} elseif (function_exists('iconv_substr')) {
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$newstr = iconv_substr($str, 0, $length, 'utf-8');
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} else {
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$newstr = substr($str, 0, $length);
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}
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if ($append && $str != $newstr) {
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$newstr .= '...';
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}
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return $newstr;
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}
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/**
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* Replace content of string according to given rules
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*
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* @param string $str
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* @param array $rules
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* @return string
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*/
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public static function getStringReplaced($str, $rules)
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{
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foreach ($rules as $search => $replace) {
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$str = str_replace($search, $replace, $str);
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}
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return $str;
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}
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}
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