pcre.backtrack_limit sets the maximum bind length PREG calls (e.g. preg_replace_callback) can make. However the actual maximum seems to be approximately half the value set here, possibly due to the character encoding that PCRE runs with internally.
php.ini の設定により動作が変化します。
名前 | デフォルト | 変更可能 | 変更履歴 |
---|---|---|---|
pcre.backtrack_limit | "1000000" | INI_ALL |
|
pcre.recursion_limit | "100000" | INI_ALL |
|
pcre.jit | "1" | INI_ALL |
以下に設定ディレクティブに関する 簡単な説明を示します。
pcre.backtrack_limit sets the maximum bind length PREG calls (e.g. preg_replace_callback) can make. However the actual maximum seems to be approximately half the value set here, possibly due to the character encoding that PCRE runs with internally.
pcre.backtrack_limit can be set to -1;
ini_set("pcre.backtrack_limit", "-1");
after i put the above code in my code, it works;
so i guess -1 means infinite(i am not very sure ,but it works);
so when you have not idea how much it should be set in your program, you can try this.