PHP preg_match找到多個匹配

Question

正則表達式在PHP中使用preg_match查找多個匹配的字符串的正確語法是什麼？

例如，如果發現以下段落中出現兩次以下字符串：

$string = "/brown fox jumped [0-9]/"; 

$paragraph = "The brown fox jumped 1 time over the fence. The green fox did not. Then the brown fox jumped 2 times over the fence" 

if (preg_match($string, $paragraph)) { 
echo "match found"; 
}else { 
echo "match NOT found"; 
} 

Answer 1

你想用​​。這是它在代碼中的外觀。實際的函數返回找到的項目數，但$matches陣列將持有的結果：

<?php 
$string = "/brown fox jumped [0-9]/"; 

$paragraph = "The brown fox jumped 1 time over the fence. The green fox did not. Then the brown fox jumped 2 times over the fence"; 

if (preg_match_all($string, $paragraph, &$matches)) { 
    echo count($matches[0]) . " matches found"; 
}else { 
    echo "match NOT found"; 
} 
?> 

將輸出：

2場比賽中