What is the character replacement function in php

The character replacement function in php is str_replace(). The str_replace() function is used to replace some characters in a string. This function is case-sensitive. Function syntax: [str_replace(find,replace,string,count)].

#The character replacement function in php is str_replace().

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Function introduction:

str_replace() function replaces some characters in the string (case sensitive) .

Note: This function is case-sensitive.

Function syntax:

str_replace(find,replace,string,count)

Parameter introduction:

• find Required. Specifies the value to look for.

• replace Required. Specifies the value to replace the value in find .

• #string Required. Specifies the string to be searched for.

• #count Optional. A variable counting the number of substitutions.

Code implementation:

<?php
  //实例一：字符串替换字符串
  $str1 = str_replace("red","black","red green yellow pink purple");
  echo $str1."";  //输出结果为black green yellow pink purple
?>
<?php
  //实例二：字符串替换数组键值
  $arr = array("blue","red","green","yellow");
  $str1 = str_replace("red","pink",$arr,$i);
  print_r($str1);
?>

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