The replace first method is *case sensitive*.
php
StringHelper::replaceFirst('abc', '123', 'abc abc abc'); // returns "123 abc abc"
| public static replaceFirst ( string $search, string $replace, string $subject ) : mixed | ||
| $search | string | Search string to look for. |
| $replace | string | Replacement value for the first found occurrence. |
| $subject | string | The string you want to look up to replace the first element. |
| return | mixed | Replaced string |
/**
* Generate the Link Tag.
*
* @param string $value The Brackets value `[]`.
* @param string $sub The optional Parentheses value `()`
* @see \luya\tag\TagInterface::parse()
* @return string The parser tag.
*/
public function parse($value, $sub)
{
if (substr($value, 0, 2) == '//') {
$value = StringHelper::replaceFirst('//', Url::base(true) . '/', $value);
$external = false;
} else {
$external = true;
}
$value = Url::ensureHttp($value);
$label = empty($sub) ? $value : $sub;
return Html::a($label, $value, ['class' => $external ? 'link-external' : 'link-internal', 'target' => $external ? '_blank' : null]);
}
public function actionClasses()
{
if (Config::has('rc1_block_classes_renameing')) {
return $this->outputError("You already have run the classes updater, so your system should be up-to-date already.");
}
foreach (Block::find()->all() as $block) {
$ns = $block->class;
foreach ($this->_classMapping as $old => $new) {
if (StringHelper::startsWith($ns, $old)) {
$this->outputError('old: ' . $ns);
$newNs = StringHelper::replaceFirst($old, $new, $ns);
$block->updateAttributes(['class' => $newNs]);
$this->outputSuccess('new: ' . $newNs);
}
}
}
Config::set('rc1_block_classes_renameing', true);
return $this->outputSuccess('OK. You can now run the import command.');
}
public function testReplaceFirst()
{
$this->assertSame('abc 123 123', StringHelper::replaceFirst('123', 'abc', '123 123 123'));
$this->assertSame('abc 123 ABC', StringHelper::replaceFirst('ABC', '123', 'abc ABC ABC'));
}
