trim
Entfernen Sie Leerzeichen (oder andere Zeichen) von Anfang und Ende der Zeichenfolge
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Deutsch
Entfernen Sie Charaktere auf beiden Seiten der String ("er" in "Hallo" und "D!" In "World"):
<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">"Hallo Welt!"</span> <span class="token punctuation">;</span> <span class="token keyword">echo</span> <span class="token variable">$ str</span> <span class="token operator">.</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span> <span class="token keyword">Echo</span> <span class="token function">Trim</span> <span class="token punctuation">(</span> <span class="token variable">$ str</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"Hed!"</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span> <span class="token delimiter important">?></span></span>
Entfernen Sie Leerzeichen auf beiden Seiten der Saite:
<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">"Hallo Welt!"</span> <span class="token punctuation">;</span> <span class="token keyword">Echo</span> <span class="token string double-quoted-string">"Verwenden Sie keine Trim:"</span> <span class="token operator">.</span> <span class="token variable">$ str</span> <span class="token punctuation">;</span> <span class="token keyword">echo</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span> <span class="token keyword">Echo</span> <span class="token string double-quoted-string">"Verwenden Sie Trim:"</span> <span class="token operator">.</span> <span class="token function">trimm</span> <span class="token punctuation">(</span> <span class="token variable">$ str</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span> <span class="token delimiter important">?></span></span>
Die HTML -Ausgabe des oben genannten Code ist wie folgt (bitte überprüfen Sie den Quellcode):
<span class="token operator"><</span> <span class="token operator">!</span> <span class="token constant">DocType</span> html <span class="token operator">></span> <span class="token operator"><html></span><span class="token operator"></span> <span class="token operator"><body></span><span class="token operator"></span> Verwenden Sie keine Trim <span class="token punctuation">:</span> Hallo Welt <span class="token operator">!</span> <span class="token operator"><BR></span> Verwenden Sie Trim <span class="token punctuation">:</span> <span class="token operator">Hallo</span> Welt <span class="token operator">!</span> <span class="token operator"><</span> <span class="token operator">/</span> body <span class="token operator">></span> <span class="token operator"><</span> <span class="token operator">/</span> html <span class="token operator">></span>
Die Browserausgabe des obigen Codes lautet wie folgt:
Verwenden Sie keine Trim: Hallo Welt! Verwenden Sie Trim: Hallo Welt!
Entfernen Sie das Newline -Zeichen (\ n) auf beiden Seiten der Zeichenfolge:
<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">"\ n \ n \ n \ nhello World! \ n \ n \ n"</span> <span class="token punctuation">;</span> <span class="token keyword">Echo</span> <span class="token string double-quoted-string">"Verwenden Sie keine Trim:"</span> <span class="token operator">.</span> <span class="token variable">$ str</span> <span class="token punctuation">;</span> <span class="token keyword">echo</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span> <span class="token keyword">Echo</span> <span class="token string double-quoted-string">"Verwenden Sie Trim:"</span> <span class="token operator">.</span> <span class="token function">trimm</span> <span class="token punctuation">(</span> <span class="token variable">$ str</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span> <span class="token delimiter important">?></span></span>
Die HTML -Ausgabe des oben genannten Code ist wie folgt (bitte überprüfen Sie den Quellcode):
<span class="token operator"><</span> <span class="token operator">!</span> <span class="token constant">DocType</span> html <span class="token operator">></span> <span class="token operator"><html></span><span class="token operator"></span> <span class="token operator"><body></span><span class="token operator"></span> Verwenden Sie keine Trim <span class="token punctuation">:</span> Hallo Welt <span class="token operator">!</span> <span class="token operator"><BR></span> Verwenden Sie Trim <span class="token punctuation">:</span> <span class="token operator">Hallo</span> Welt <span class="token operator">!</span> <span class="token operator"><</span> <span class="token operator">/</span> body <span class="token operator">></span> <span class="token operator"><</span> <span class="token operator">/</span> html <span class="token operator">></span>
Die Browserausgabe des obigen Codes lautet wie folgt:
Verwenden Sie keine Trim: Hallo Welt! Verwenden Sie Trim: Hallo Welt!
