与PHP字符串

Question

内的价格符号包裹串如何使用PHP我把

$str = "Shoes cost $10, and pants cost $25obo"; 

到

$str = "Shoes cost <em>$10></em>, and pants cost <em>$25obo</em>"; 

。而且我需要一种对许多文本有效的方法，如许多段落，而不仅仅是一个句子。

Answer 1

还有其他方式使用PHP来做到这一点，但是，你可以使用preg_replace()

CODE

$re = "/(\\$\\d+\\w*)/"; 
$str = "Shoes cost \$10, and pants cost \$25obere\nShoes cost \$10, and pants cost \$25obe \nShoes cost \$10, and pants cost \$25obfe\nShoes cost \$10, and pants cost \$25obee\n Shoes cost \$10, and pants cost \$25obo"; 
$subst = "<em>$1</em>"; 

$result = preg_replace($re, $subst, $str); 
print $result; 

输出

尝试 REGEX模式的这种方式

Shoes cost <em>$10</em>, and pants cost <em>$25obo</em> 
Shoes cost <em>$10</em>, and pants cost <em>$25TE</em> 
Shoes cost <em>$10</em>, and pants cost <em>$25ded</em> 
Shoes cost <em>$10</em>, and pants cost <em>$25o</em> 
Shoes cost <em>$10</em>, and pants cost <em>$25obo</em> 

DEMO