php 批量替换

<?php
$originalText = "Hello, world! This is a test.";
$search = ["world", "test"];
$replace = ["PHP", "example"];

$newText = str_replace($search, $replace, $originalText);

echo $newText; // 输出: Hello, PHP! This is a example.
?>

<?php
$originalText = "Hello, world! This is a test.";
$pattern = '/(world|test)/';
$replacement = 'PHP';

$newText = preg_replace($pattern, $replacement, $originalText);

echo $newText; // 输出: Hello, PHP! This is a PHP.
?>

<?php
$originalText = "Hello, world! This is a test.";
$pattern = '/(world|test)/';
$replacement = 'PHP';

echo "Original Text: " . $originalText . "\n";

$newText = preg_replace($pattern, $replacement, $originalText);

echo "New Text: " . $newText . "\n";
?>

<?php
$largeText = "..."; // 假设这是一个非常大的文本

$pattern = '/(world|test)/';
$replacement = 'PHP';

// 分批处理
$chunks = str_split($largeText, 1000); // 每1000字符为一个批次
$newTextChunks = [];

foreach ($chunks as $chunk) {
    $newTextChunks[] = preg_replace($pattern, $replacement, $chunk);
}

$newText = implode('', $newTextChunks);

echo $newText;
?>