boolval

Beispiel

Gibt die Booleschen Werte für verschiedene Variablen zurück:

 <span class="token php language-php"><span class="token delimiter important"><? Php</span>
<span class="token keyword">Echo</span> <span class="token string double-quoted-string">"0:"</span> <span class="token operator">.</span> <span class="token punctuation">(</span> <span class="token function">Boolval</span> <span class="token punctuation">(</span> <span class="token number">0</span> <span class="token punctuation">)</span> <span class="token operator">?</span> <span class="token string single-quoted-string">&#39;True&#39;</span> <span class="token punctuation">:</span> <span class="token string single-quoted-string">&#39;Falsch&#39;</span> <span class="token punctuation">)</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 string double-quoted-string">"4:"</span> <span class="token operator">.</span> <span class="token punctuation">(</span> <span class="token function">Boolval</span> <span class="token punctuation">(</span> <span class="token number">42</span> <span class="token punctuation">)</span> <span class="token operator">?</span> <span class="token string single-quoted-string">&#39;Richtig&#39;</span> <span class="token punctuation">:</span> <span class="token string single-quoted-string">&#39;Falsch&#39;</span> <span class="token punctuation">)</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 string single-quoted-string">&#39;"":&#39;</span> <span class="token operator">.</span> <span class="token punctuation">(</span> <span class="token function">Boolval</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">""</span> <span class="token punctuation">)</span> <span class="token operator">?</span> <span class="token string single-quoted-string">&#39;True&#39;</span> <span class="token punctuation">:</span> <span class="token string single-quoted-string">&#39;Falsch&#39;</span> <span class="token punctuation">)</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 string single-quoted-string">&#39;"Hallo":&#39;</span> <span class="token operator">.</span> <span class="token punctuation">(</span> <span class="token function">Boolval</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"Hallo"</span> <span class="token punctuation">)</span> <span class="token operator">?</span> <span class="token string single-quoted-string">&#39;Richtig&#39;</span> <span class="token punctuation">:</span> <span class="token string single-quoted-string">&#39;Falsch&#39;</span> <span class="token punctuation">)</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 string single-quoted-string">&#39;"0":&#39;</span> <span class="token operator">.</span> <span class="token punctuation">(</span> <span class="token function">Boolval</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"0"</span> <span class="token punctuation">)</span> <span class="token operator">?</span> <span class="token string single-quoted-string">&#39;True&#39;</span> <span class="token punctuation">:</span> <span class="token string single-quoted-string">&#39;False&#39;</span> <span class="token punctuation">)</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 string double-quoted-string">"[3, 5]:"</span> <span class="token operator">.</span> <span class="token punctuation">(</span> <span class="token function">Boolval</span> <span class="token punctuation">(</span> <span class="token punctuation">[</span> <span class="token number">3</span> <span class="token punctuation">,</span> <span class="token number">5</span> <span class="token punctuation">]</span> <span class="token punctuation">)</span> <span class="token operator">?</span> <span class="token string single-quoted-string">&#39;Richtig&#39;</span> <span class="token punctuation">:</span> <span class="token string single-quoted-string">&#39;Falsch&#39;</span> <span class="token punctuation">)</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 string double-quoted-string">"[]:"</span> <span class="token operator">.</span> <span class="token punctuation">(</span> <span class="token function">Boolval</span> <span class="token punctuation">(</span> <span class="token punctuation">[</span> <span class="token punctuation">]</span> <span class="token punctuation">)</span> <span class="token operator">?</span> <span class="token string single-quoted-string">&#39;Richtig&#39;</span> <span class="token punctuation">:</span> <span class="token string single-quoted-string">&#39;Falsch&#39;</span> <span class="token punctuation">)</span> <span class="token operator">.</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span>
<span class="token delimiter important">?></span></span>

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