public static function ParagonIE_Sodium_Core_Util::substr in Automatic Updates 7
Same name and namespace in other branches
- 8 vendor/paragonie/sodium_compat/src/Core/Util.php \ParagonIE_Sodium_Core_Util::substr()
Safe substring
@internal You should not use this directly from another application
@ref mbstring.func_overload
Parameters
string $str:
int $start:
int $length:
Return value
string
Throws
TypeError
108 calls to ParagonIE_Sodium_Core_Util::substr()
- ParagonIE_Sodium_Compat::crypto_aead_aes256gcm_decrypt in vendor/
paragonie/ sodium_compat/ src/ Compat.php - Authenticated Encryption with Associated Data: Decryption
- ParagonIE_Sodium_Compat::crypto_kx_client_session_keys in vendor/
paragonie/ sodium_compat/ src/ Compat.php - ParagonIE_Sodium_Compat::crypto_kx_publickey in vendor/
paragonie/ sodium_compat/ src/ Compat.php - ParagonIE_Sodium_Compat::crypto_kx_secretkey in vendor/
paragonie/ sodium_compat/ src/ Compat.php - ParagonIE_Sodium_Compat::crypto_kx_server_session_keys in vendor/
paragonie/ sodium_compat/ src/ Compat.php
File
- vendor/
paragonie/ sodium_compat/ src/ Core/ Util.php, line 799
Class
- ParagonIE_Sodium_Core_Util
- Class ParagonIE_Sodium_Core_Util
Code
public static function substr($str, $start = 0, $length = null) {
/* Type checks: */
if (!is_string($str)) {
throw new TypeError('String expected');
}
if ($length === 0) {
return '';
}
if (self::isMbStringOverride()) {
if (PHP_VERSION_ID < 50400 && $length === null) {
$length = self::strlen($str);
}
$sub = (string) mb_substr($str, $start, $length, '8bit');
}
elseif ($length === null) {
$sub = (string) substr($str, $start);
}
else {
$sub = (string) substr($str, $start, $length);
}
if ($sub !== '') {
return $sub;
}
return '';
}