str_pad
使用另一個字符串將字符串填充到某個長度
填充字符串的右側,到30 個字符的新長度:
<span class="token php language-php"><span class="token delimiter important"><?php</span> <span class="token variable">$str</span> <span class="token operator">=</span> <span class="token string double-quoted-string">"Hello World"</span> <span class="token punctuation">;</span> <span class="token keyword">echo</span> <span class="token function">str_pad</span> <span class="token punctuation">(</span> <span class="token variable">$str</span> <span class="token punctuation">,</span> <span class="token number">30</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"."</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span> <span class="token delimiter important">?></span></span>
填充字符串的左側:
<span class="token php language-php"><span class="token delimiter important"><?php</span> <span class="token variable">$str</span> <span class="token operator">=</span> <span class="token string double-quoted-string">"Hello World"</span> <span class="token punctuation">;</span> <span class="token keyword">echo</span> <span class="token function">str_pad</span> <span class="token punctuation">(</span> <span class="token variable">$str</span> <span class="token punctuation">,</span> <span class="token number">30</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"."</span> <span class="token punctuation">,</span> <span class="token constant">STR_PAD_LEFT</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span> <span class="token delimiter important">?></span></span>
填充字符串的兩側:
<span class="token php language-php"><span class="token delimiter important"><?php</span> <span class="token variable">$str</span> <span class="token operator">=</span> <span class="token string double-quoted-string">"Hello World"</span> <span class="token punctuation">;</span> <span class="token keyword">echo</span> <span class="token function">str_pad</span> <span class="token punctuation">(</span> <span class="token variable">$str</span> <span class="token punctuation">,</span> <span class="token number">30</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">".:"</span> <span class="token punctuation">,</span> <span class="token constant">STR_PAD_BOTH</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span> <span class="token delimiter important">?></span></span>